diff --git a/bindings/adjudicator/Adjudicator.go b/bindings/adjudicator/Adjudicator.go
index ee944dc..de85a30 100644
--- a/bindings/adjudicator/Adjudicator.go
+++ b/bindings/adjudicator/Adjudicator.go
@@ -69,7 +69,7 @@ type ChannelParticipant struct {
 
 // ChannelState is an auto generated low-level Go binding around an user-defined struct.
 type ChannelState struct {
-	ChannelID [][32]byte
+	ChannelID [32]byte
 	Version   uint64
 	Outcome   ChannelAllocation
 	AppData   []byte
@@ -78,15 +78,15 @@ type ChannelState struct {
 
 // ChannelSubAlloc is an auto generated low-level Go binding around an user-defined struct.
 type ChannelSubAlloc struct {
-	ID       [][32]byte
+	ID       [32]byte
 	Balances []*big.Int
 	IndexMap []uint16
 }
 
 // AdjudicatorMetaData contains all meta data concerning the Adjudicator contract.
 var AdjudicatorMetaData = &bind.MetaData{
-	ABI: "[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"phase\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint64\",\"name\":\"timeout\",\"type\":\"uint64\"}],\"name\":\"ChannelUpdate\",\"type\":\"event\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"}],\"name\":\"channelID\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State[]\",\"name\":\"subStates\",\"type\":\"tuple[]\"}],\"name\":\"conclude\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"bytes[]\",\"name\":\"sigs\",\"type\":\"bytes[]\"}],\"name\":\"concludeFinal\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"disputes\",\"outputs\":[{\"internalType\":\"uint64\",\"name\":\"timeout\",\"type\":\"uint64\"},{\"internalType\":\"uint64\",\"name\":\"challengeDuration\",\"type\":\"uint64\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"internalType\":\"uint8\",\"name\":\"phase\",\"type\":\"uint8\"},{\"internalType\":\"bytes32\",\"name\":\"stateHash\",\"type\":\"bytes32\"},{\"internalType\":\"bool\",\"name\":\"hasApp\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"}],\"name\":\"hashState\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"stateOld\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"uint256\",\"name\":\"actorIdx\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"name\":\"progress\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"bytes[]\",\"name\":\"sigs\",\"type\":\"bytes[]\"}],\"internalType\":\"structAdjudicator.SignedState\",\"name\":\"channel\",\"type\":\"tuple\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"bytes[]\",\"name\":\"sigs\",\"type\":\"bytes[]\"}],\"internalType\":\"structAdjudicator.SignedState[]\",\"name\":\"subChannels\",\"type\":\"tuple[]\"}],\"name\":\"register\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]",
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+	ABI: "[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"indexed\":false,\"internalType\":\"uint8\",\"name\":\"phase\",\"type\":\"uint8\"},{\"indexed\":false,\"internalType\":\"uint64\",\"name\":\"timeout\",\"type\":\"uint64\"}],\"name\":\"ChannelUpdate\",\"type\":\"event\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"}],\"name\":\"channelID\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State[]\",\"name\":\"subStates\",\"type\":\"tuple[]\"}],\"name\":\"conclude\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"bytes[]\",\"name\":\"sigs\",\"type\":\"bytes[]\"}],\"name\":\"concludeFinal\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"disputes\",\"outputs\":[{\"internalType\":\"uint64\",\"name\":\"timeout\",\"type\":\"uint64\"},{\"internalType\":\"uint64\",\"name\":\"challengeDuration\",\"type\":\"uint64\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"internalType\":\"uint8\",\"name\":\"phase\",\"type\":\"uint8\"},{\"internalType\":\"bytes32\",\"name\":\"stateHash\",\"type\":\"bytes32\"},{\"internalType\":\"bool\",\"name\":\"hasApp\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"}],\"name\":\"hashState\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"stateOld\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"uint256\",\"name\":\"actorIdx\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"name\":\"progress\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"state\",\"type\":\"tuple\"},{\"internalType\":\"bytes[]\",\"name\":\"sigs\",\"type\":\"bytes[]\"}],\"internalType\":\"structAdjudicator.SignedState\",\"name\":\"channel\",\"type\":\"tuple\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonc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 }
 
 // AdjudicatorABI is the input ABI used to generate the binding from.
@@ -352,9 +352,9 @@ func (_Adjudicator *AdjudicatorCallerSession) Disputes(arg0 [32]byte) (struct {
 	return _Adjudicator.Contract.Disputes(&_Adjudicator.CallOpts, arg0)
 }
 
-// HashState is a free data retrieval call binding the contract method 0x84889000.
+// HashState is a free data retrieval call binding the contract method 0x7a114d3d.
 //
-// Solidity: function hashState((bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
+// Solidity: function hashState((bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
 func (_Adjudicator *AdjudicatorCaller) HashState(opts *bind.CallOpts, state ChannelState) ([32]byte, error) {
 	var out []interface{}
 	err := _Adjudicator.contract.Call(opts, &out, "hashState", state)
@@ -369,100 +369,100 @@ func (_Adjudicator *AdjudicatorCaller) HashState(opts *bind.CallOpts, state Chan
 
 }
 
-// HashState is a free data retrieval call binding the contract method 0x84889000.
+// HashState is a free data retrieval call binding the contract method 0x7a114d3d.
 //
-// Solidity: function hashState((bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
+// Solidity: function hashState((bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
 func (_Adjudicator *AdjudicatorSession) HashState(state ChannelState) ([32]byte, error) {
 	return _Adjudicator.Contract.HashState(&_Adjudicator.CallOpts, state)
 }
 
-// HashState is a free data retrieval call binding the contract method 0x84889000.
+// HashState is a free data retrieval call binding the contract method 0x7a114d3d.
 //
-// Solidity: function hashState((bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
+// Solidity: function hashState((bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state) pure returns(bytes32)
 func (_Adjudicator *AdjudicatorCallerSession) HashState(state ChannelState) ([32]byte, error) {
 	return _Adjudicator.Contract.HashState(&_Adjudicator.CallOpts, state)
 }
 
-// Conclude is a paid mutator transaction binding the contract method 0x4176e7ae.
+// Conclude is a paid mutator transaction binding the contract method 0xe7c01d05.
 //
-// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
+// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
 func (_Adjudicator *AdjudicatorTransactor) Conclude(opts *bind.TransactOpts, params ChannelParams, state ChannelState, subStates []ChannelState) (*types.Transaction, error) {
 	return _Adjudicator.contract.Transact(opts, "conclude", params, state, subStates)
 }
 
-// Conclude is a paid mutator transaction binding the contract method 0x4176e7ae.
+// Conclude is a paid mutator transaction binding the contract method 0xe7c01d05.
 //
-// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
+// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
 func (_Adjudicator *AdjudicatorSession) Conclude(params ChannelParams, state ChannelState, subStates []ChannelState) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Conclude(&_Adjudicator.TransactOpts, params, state, subStates)
 }
 
-// Conclude is a paid mutator transaction binding the contract method 0x4176e7ae.
+// Conclude is a paid mutator transaction binding the contract method 0xe7c01d05.
 //
-// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
+// Solidity: function conclude((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool)[] subStates) returns()
 func (_Adjudicator *AdjudicatorTransactorSession) Conclude(params ChannelParams, state ChannelState, subStates []ChannelState) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Conclude(&_Adjudicator.TransactOpts, params, state, subStates)
 }
 
-// ConcludeFinal is a paid mutator transaction binding the contract method 0x4c330775.
+// ConcludeFinal is a paid mutator transaction binding the contract method 0x75a87223.
 //
-// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
+// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
 func (_Adjudicator *AdjudicatorTransactor) ConcludeFinal(opts *bind.TransactOpts, params ChannelParams, state ChannelState, sigs [][]byte) (*types.Transaction, error) {
 	return _Adjudicator.contract.Transact(opts, "concludeFinal", params, state, sigs)
 }
 
-// ConcludeFinal is a paid mutator transaction binding the contract method 0x4c330775.
+// ConcludeFinal is a paid mutator transaction binding the contract method 0x75a87223.
 //
-// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
+// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
 func (_Adjudicator *AdjudicatorSession) ConcludeFinal(params ChannelParams, state ChannelState, sigs [][]byte) (*types.Transaction, error) {
 	return _Adjudicator.Contract.ConcludeFinal(&_Adjudicator.TransactOpts, params, state, sigs)
 }
 
-// ConcludeFinal is a paid mutator transaction binding the contract method 0x4c330775.
+// ConcludeFinal is a paid mutator transaction binding the contract method 0x75a87223.
 //
-// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
+// Solidity: function concludeFinal((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, bytes[] sigs) returns()
 func (_Adjudicator *AdjudicatorTransactorSession) ConcludeFinal(params ChannelParams, state ChannelState, sigs [][]byte) (*types.Transaction, error) {
 	return _Adjudicator.Contract.ConcludeFinal(&_Adjudicator.TransactOpts, params, state, sigs)
 }
 
-// Progress is a paid mutator transaction binding the contract method 0xe9bc418d.
+// Progress is a paid mutator transaction binding the contract method 0x4c8a2c90.
 //
-// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
+// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
 func (_Adjudicator *AdjudicatorTransactor) Progress(opts *bind.TransactOpts, params ChannelParams, stateOld ChannelState, state ChannelState, actorIdx *big.Int, sig []byte) (*types.Transaction, error) {
 	return _Adjudicator.contract.Transact(opts, "progress", params, stateOld, state, actorIdx, sig)
 }
 
-// Progress is a paid mutator transaction binding the contract method 0xe9bc418d.
+// Progress is a paid mutator transaction binding the contract method 0x4c8a2c90.
 //
-// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
+// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
 func (_Adjudicator *AdjudicatorSession) Progress(params ChannelParams, stateOld ChannelState, state ChannelState, actorIdx *big.Int, sig []byte) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Progress(&_Adjudicator.TransactOpts, params, stateOld, state, actorIdx, sig)
 }
 
-// Progress is a paid mutator transaction binding the contract method 0xe9bc418d.
+// Progress is a paid mutator transaction binding the contract method 0x4c8a2c90.
 //
-// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
+// Solidity: function progress((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) stateOld, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) state, uint256 actorIdx, bytes sig) returns()
 func (_Adjudicator *AdjudicatorTransactorSession) Progress(params ChannelParams, stateOld ChannelState, state ChannelState, actorIdx *big.Int, sig []byte) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Progress(&_Adjudicator.TransactOpts, params, stateOld, state, actorIdx, sig)
 }
 
-// Register is a paid mutator transaction binding the contract method 0xc5457f0d.
+// Register is a paid mutator transaction binding the contract method 0xe9aa7e02.
 //
-// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
+// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
 func (_Adjudicator *AdjudicatorTransactor) Register(opts *bind.TransactOpts, channel AdjudicatorSignedState, subChannels []AdjudicatorSignedState) (*types.Transaction, error) {
 	return _Adjudicator.contract.Transact(opts, "register", channel, subChannels)
 }
 
-// Register is a paid mutator transaction binding the contract method 0xc5457f0d.
+// Register is a paid mutator transaction binding the contract method 0xe9aa7e02.
 //
-// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
+// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
 func (_Adjudicator *AdjudicatorSession) Register(channel AdjudicatorSignedState, subChannels []AdjudicatorSignedState) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Register(&_Adjudicator.TransactOpts, channel, subChannels)
 }
 
-// Register is a paid mutator transaction binding the contract method 0xc5457f0d.
+// Register is a paid mutator transaction binding the contract method 0xe9aa7e02.
 //
-// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
+// Solidity: function register(((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[]) channel, ((uint256,uint256,(address,bytes)[],address,bool,bool),(bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool),bytes[])[] subChannels) returns()
 func (_Adjudicator *AdjudicatorTransactorSession) Register(channel AdjudicatorSignedState, subChannels []AdjudicatorSignedState) (*types.Transaction, error) {
 	return _Adjudicator.Contract.Register(&_Adjudicator.TransactOpts, channel, subChannels)
 }
diff --git a/bindings/adjudicator/AdjudicatorBinRuntime.go b/bindings/adjudicator/AdjudicatorBinRuntime.go
index cfd85fd..e11f6d2 100644
--- a/bindings/adjudicator/AdjudicatorBinRuntime.go
+++ b/bindings/adjudicator/AdjudicatorBinRuntime.go
@@ -1,4 +1,4 @@
 package adjudicator // import "github.com/perun-network/perun-eth-backend/bindings/adjudicator"
 
 // AdjudicatorBinRuntime is the runtime part of the compiled bytecode used for deploying new contracts.
-var AdjudicatorBinRuntime = "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diff --git a/bindings/assetholdererc20/AssetHolderERC20.go b/bindings/assetholdererc20/AssetHolderERC20.go
index 6d048cb..0e1b8a3 100644
--- a/bindings/assetholdererc20/AssetHolderERC20.go
+++ b/bindings/assetholdererc20/AssetHolderERC20.go
@@ -46,7 +46,7 @@ type ChannelParticipant struct {
 // Assetholdererc20MetaData contains all meta data concerning the Assetholdererc20 contract.
 var Assetholdererc20MetaData = &bind.MetaData{
 	ABI: "[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_adjudicator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"_token\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"Deposited\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"}],\"name\":\"OutcomeSet\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"Withdrawn\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"adjudicator\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"deposit\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"holdings\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"parts\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"newBals\",\"type\":\"uint256[]\"}],\"name\":\"setOutcome\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"settled\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"token\",\"outputs\":[{\"internalType\":\"contractIERC20\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant\",\"name\":\"participant\",\"type\":\"tuple\"},{\"internalType\":\"addresspayable\",\"name\":\"receiver\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"internalType\":\"structAssetHolder.WithdrawalAuth\",\"name\":\"authorization\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"signature\",\"type\":\"bytes\"}],\"name\":\"withdraw\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]",
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+	Bin: 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 }
 
 // Assetholdererc20ABI is the input ABI used to generate the binding from.
diff --git a/bindings/assetholdererc20/AssetHolderERC20BinRuntime.go b/bindings/assetholdererc20/AssetHolderERC20BinRuntime.go
index bb0de7f..5779223 100644
--- a/bindings/assetholdererc20/AssetHolderERC20BinRuntime.go
+++ b/bindings/assetholdererc20/AssetHolderERC20BinRuntime.go
@@ -1,4 +1,4 @@
 package assetholdererc20 // import "github.com/perun-network/perun-eth-backend/bindings/assetholdererc20"
 
 // AssetHolderERC20BinRuntime is the runtime part of the compiled bytecode used for deploying new contracts.
-var AssetHolderERC20BinRuntime = 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diff --git a/bindings/assetholdereth/AssetHolderETH.go b/bindings/assetholdereth/AssetHolderETH.go
index d3be064..30ba9be 100644
--- a/bindings/assetholdereth/AssetHolderETH.go
+++ b/bindings/assetholdereth/AssetHolderETH.go
@@ -46,7 +46,7 @@ type ChannelParticipant struct {
 // AssetholderethMetaData contains all meta data concerning the Assetholdereth contract.
 var AssetholderethMetaData = &bind.MetaData{
 	ABI: "[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_adjudicator\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"Deposited\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"}],\"name\":\"OutcomeSet\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"receiver\",\"type\":\"address\"}],\"name\":\"Withdrawn\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"adjudicator\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"fundingID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"deposit\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"holdings\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"parts\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"newBals\",\"type\":\"uint256[]\"}],\"name\":\"setOutcome\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"name\":\"settled\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant\",\"name\":\"participant\",\"type\":\"tuple\"},{\"internalType\":\"addresspayable\",\"name\":\"receiver\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"internalType\":\"structAssetHolder.WithdrawalAuth\",\"name\":\"authorization\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"signature\",\"type\":\"bytes\"}],\"name\":\"withdraw\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]",
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 }
 
 // AssetholderethABI is the input ABI used to generate the binding from.
diff --git a/bindings/assetholdereth/AssetHolderETHBinRuntime.go b/bindings/assetholdereth/AssetHolderETHBinRuntime.go
index d6c18f1..59f9ec3 100644
--- a/bindings/assetholdereth/AssetHolderETHBinRuntime.go
+++ b/bindings/assetholdereth/AssetHolderETHBinRuntime.go
@@ -1,4 +1,4 @@
 package assetholdereth // import "github.com/perun-network/perun-eth-backend/bindings/assetholdereth"
 
 // AssetHolderETHBinRuntime is the runtime part of the compiled bytecode used for deploying new contracts.
-var AssetHolderETHBinRuntime = "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+var AssetHolderETHBinRuntime = "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"
diff --git a/bindings/trivialapp/TrivialApp.go b/bindings/trivialapp/TrivialApp.go
index 9672d03..5345aec 100644
--- a/bindings/trivialapp/TrivialApp.go
+++ b/bindings/trivialapp/TrivialApp.go
@@ -62,7 +62,7 @@ type ChannelParticipant struct {
 
 // ChannelState is an auto generated low-level Go binding around an user-defined struct.
 type ChannelState struct {
-	ChannelID [][32]byte
+	ChannelID [32]byte
 	Version   uint64
 	Outcome   ChannelAllocation
 	AppData   []byte
@@ -71,15 +71,15 @@ type ChannelState struct {
 
 // ChannelSubAlloc is an auto generated low-level Go binding around an user-defined struct.
 type ChannelSubAlloc struct {
-	ID       [][32]byte
+	ID       [32]byte
 	Balances []*big.Int
 	IndexMap []uint16
 }
 
 // TrivialappMetaData contains all meta data concerning the Trivialapp contract.
 var TrivialappMetaData = &bind.MetaData{
-	ABI: "[{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"from\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"channelID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32[]\",\"name\":\"ID\",\"type\":\"bytes32[]\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"to\",\"type\":\"tuple\"},{\"internalType\":\"uint256\",\"name\":\"actorIdx\",\"type\":\"uint256\"}],\"name\":\"validTransition\",\"outputs\":[],\"stateMutability\":\"pure\",\"type\":\"function\"}]",
-	Bin: "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",
+	ABI: "[{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"challengeDuration\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"nonce\",\"type\":\"uint256\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"ethAddress\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccAddress\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Participant[]\",\"name\":\"participants\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"app\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"ledgerChannel\",\"type\":\"bool\"},{\"internalType\":\"bool\",\"name\":\"virtualChannel\",\"type\":\"bool\"}],\"internalType\":\"structChannel.Params\",\"name\":\"params\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"from\",\"type\":\"tuple\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"channelID\",\"type\":\"bytes32\"},{\"internalType\":\"uint64\",\"name\":\"version\",\"type\":\"uint64\"},{\"components\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"chainID\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"ethHolder\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"ccHolder\",\"type\":\"bytes\"}],\"internalType\":\"structChannel.Asset[]\",\"name\":\"assets\",\"type\":\"tuple[]\"},{\"internalType\":\"uint256[]\",\"name\":\"backends\",\"type\":\"uint256[]\"},{\"internalType\":\"uint256[][]\",\"name\":\"balances\",\"type\":\"uint256[][]\"},{\"components\":[{\"internalType\":\"bytes32\",\"name\":\"ID\",\"type\":\"bytes32\"},{\"internalType\":\"uint256[]\",\"name\":\"balances\",\"type\":\"uint256[]\"},{\"internalType\":\"uint16[]\",\"name\":\"indexMap\",\"type\":\"uint16[]\"}],\"internalType\":\"structChannel.SubAlloc[]\",\"name\":\"locked\",\"type\":\"tuple[]\"}],\"internalType\":\"structChannel.Allocation\",\"name\":\"outcome\",\"type\":\"tuple\"},{\"internalType\":\"bytes\",\"name\":\"appData\",\"type\":\"bytes\"},{\"internalType\":\"bool\",\"name\":\"isFinal\",\"type\":\"bool\"}],\"internalType\":\"structChannel.State\",\"name\":\"to\",\"type\":\"tuple\"},{\"internalType\":\"uint256\",\"name\":\"actorIdx\",\"type\":\"uint256\"}],\"name\":\"validTransition\",\"outputs\":[],\"stateMutability\":\"pure\",\"type\":\"function\"}]",
+	Bin: "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",
 }
 
 // TrivialappABI is the input ABI used to generate the binding from.
@@ -249,9 +249,9 @@ func (_Trivialapp *TrivialappTransactorRaw) Transact(opts *bind.TransactOpts, me
 	return _Trivialapp.Contract.contract.Transact(opts, method, params...)
 }
 
-// ValidTransition is a free data retrieval call binding the contract method 0x18dc6c00.
+// ValidTransition is a free data retrieval call binding the contract method 0xf7530b41.
 //
-// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) from, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
+// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) from, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
 func (_Trivialapp *TrivialappCaller) ValidTransition(opts *bind.CallOpts, params ChannelParams, from ChannelState, to ChannelState, actorIdx *big.Int) error {
 	var out []interface{}
 	err := _Trivialapp.contract.Call(opts, &out, "validTransition", params, from, to, actorIdx)
@@ -264,16 +264,16 @@ func (_Trivialapp *TrivialappCaller) ValidTransition(opts *bind.CallOpts, params
 
 }
 
-// ValidTransition is a free data retrieval call binding the contract method 0x18dc6c00.
+// ValidTransition is a free data retrieval call binding the contract method 0xf7530b41.
 //
-// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) from, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
+// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) from, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
 func (_Trivialapp *TrivialappSession) ValidTransition(params ChannelParams, from ChannelState, to ChannelState, actorIdx *big.Int) error {
 	return _Trivialapp.Contract.ValidTransition(&_Trivialapp.CallOpts, params, from, to, actorIdx)
 }
 
-// ValidTransition is a free data retrieval call binding the contract method 0x18dc6c00.
+// ValidTransition is a free data retrieval call binding the contract method 0xf7530b41.
 //
-// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) from, (bytes32[],uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32[],uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
+// Solidity: function validTransition((uint256,uint256,(address,bytes)[],address,bool,bool) params, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) from, (bytes32,uint64,((uint256,address,bytes)[],uint256[],uint256[][],(bytes32,uint256[],uint16[])[]),bytes,bool) to, uint256 actorIdx) pure returns()
 func (_Trivialapp *TrivialappCallerSession) ValidTransition(params ChannelParams, from ChannelState, to ChannelState, actorIdx *big.Int) error {
 	return _Trivialapp.Contract.ValidTransition(&_Trivialapp.CallOpts, params, from, to, actorIdx)
 }
diff --git a/bindings/trivialapp/TrivialAppBinRuntime.go b/bindings/trivialapp/TrivialAppBinRuntime.go
index 5ddbf66..929be9e 100644
--- a/bindings/trivialapp/TrivialAppBinRuntime.go
+++ b/bindings/trivialapp/TrivialAppBinRuntime.go
@@ -1,4 +1,4 @@
 package trivialapp // import "github.com/perun-network/perun-eth-backend/bindings/trivialapp"
 
 // TrivialAppBinRuntime is the runtime part of the compiled bytecode used for deploying new contracts.
-var TrivialAppBinRuntime = "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"
+var TrivialAppBinRuntime = "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"
diff --git a/channel/adjudicator.go b/channel/adjudicator.go
index 9e8d772..fbac46f 100644
--- a/channel/adjudicator.go
+++ b/channel/adjudicator.go
@@ -189,7 +189,7 @@ func ValidateAdjudicator(ctx context.Context, backend bind.ContractCaller, adjud
 // toEthSubStates generates a channel tree in depth-first order.
 func toEthSubStates(state *channel.State, subStates channel.StateMap) (ethSubStates []adjudicator.ChannelState) {
 	for _, subAlloc := range state.Locked {
-		subState, ok := subStates[channel.IDKey(subAlloc.ID)]
+		subState, ok := subStates[subAlloc.ID]
 		if !ok {
 			log.Panic("sub-state not found")
 		}
diff --git a/channel/adjudicator_internal_test.go b/channel/adjudicator_internal_test.go
index 881604c..0b30b66 100644
--- a/channel/adjudicator_internal_test.go
+++ b/channel/adjudicator_internal_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -18,6 +18,8 @@ import (
 	"math/rand"
 	"testing"
 
+	"github.com/perun-network/perun-eth-backend/wallet"
+
 	"github.com/perun-network/perun-eth-backend/bindings/adjudicator"
 	"github.com/stretchr/testify/assert"
 	"perun.network/go-perun/channel"
@@ -38,13 +40,13 @@ func Test_toEthSubStates(t *testing.T) {
 		{
 			title: "nil map gives nil slice",
 			setup: func() (state *channel.State, subStates channel.StateMap, expected []adjudicator.ChannelState) {
-				return channeltest.NewRandomState(rng, channeltest.WithBackend(1)), nil, nil
+				return channeltest.NewRandomState(rng, channeltest.WithBackend(wallet.BackendID)), nil, nil
 			},
 		},
 		{
 			title: "fresh map gives nil slice",
 			setup: func() (state *channel.State, subStates channel.StateMap, expected []adjudicator.ChannelState) {
-				return channeltest.NewRandomState(rng, channeltest.WithBackend(1)), nil, nil
+				return channeltest.NewRandomState(rng, channeltest.WithBackend(wallet.BackendID)), nil, nil
 			},
 		},
 		{
@@ -84,7 +86,7 @@ func Test_toEthSubStates(t *testing.T) {
 func genStates(rng *rand.Rand, n int) (states []*channel.State) {
 	states = make([]*channel.State, n)
 	for i := range states {
-		states[i] = channeltest.NewRandomState(rng, channeltest.WithBackend(1))
+		states[i] = channeltest.NewRandomState(rng, channeltest.WithBackend(wallet.BackendID))
 	}
 	return
 }
diff --git a/channel/adjudicator_test.go b/channel/adjudicator_test.go
index 15e3b8b..b03fa07 100644
--- a/channel/adjudicator_test.go
+++ b/channel/adjudicator_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -47,7 +47,7 @@ func testSignState(t *testing.T, accounts []*keystore.Account, state *channel.St
 func signState(accounts []*keystore.Account, state *channel.State) (channel.Transaction, error) {
 	sigs := make([][]byte, len(accounts))
 	for i := range accounts {
-		sig, err := channel.Sign(accounts[i], state, 1)
+		sig, err := channel.Sign(accounts[i], state, ethwallettest.BackendID)
 		if err != nil {
 			return channel.Transaction{}, errors.WithMessagef(err, "signing with account %d", i)
 		}
@@ -68,7 +68,7 @@ func TestSubscribeRegistered(t *testing.T) {
 		rng,
 		channeltest.WithChallengeDuration(uint64(100*time.Second)),
 		channeltest.WithParts(s.Parts),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallettest.BackendID),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(false),
 		channeltest.WithLedgerChannel(true),
@@ -94,7 +94,7 @@ func TestSubscribeRegistered(t *testing.T) {
 	tx := testSignState(t, s.Accs, state)
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{ethwallettest.BackendID: s.Accs[0]},
 		Idx:    channel.Index(0),
 		Tx:     tx,
 	}
diff --git a/channel/asset.go b/channel/asset.go
index a49b302..aa55a26 100644
--- a/channel/asset.go
+++ b/channel/asset.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -49,12 +49,12 @@ func MakeChainID(id *big.Int) ChainID {
 	return ChainID{id}
 }
 
-// MakeAssetID makes a AssetID for the given id.
-func MakeAssetID(id *big.Int) multi.AssetID {
+// MakeLedgerBackendID makes a AssetID for the given id.
+func MakeLedgerBackendID(id *big.Int) multi.LedgerBackendID {
 	if id.Sign() < 0 {
 		panic("must not be smaller than zero")
 	}
-	return AssetID{backendID: 1, ledgerID: MakeChainID(id)}
+	return AssetID{backendID: wallet.BackendID, ledgerID: MakeChainID(id)}
 }
 
 // UnmarshalBinary unmarshals the chainID from its binary representation.
@@ -66,7 +66,7 @@ func (id *ChainID) UnmarshalBinary(data []byte) error {
 // MarshalBinary marshals the chainID into its binary representation.
 func (id ChainID) MarshalBinary() (data []byte, err error) {
 	if id.Sign() == -1 {
-		return nil, errors.New("cannot marshal negative AssetID")
+		return nil, errors.New("cannot marshal negative LedgerBackendID")
 	}
 	return id.Bytes(), nil
 }
@@ -108,8 +108,8 @@ func (id AssetID) LedgerID() multi.LedgerID {
 	return &id.ledgerID
 }
 
-// AssetID returns the asset ID of the asset.
-func (a Asset) AssetID() multi.AssetID {
+// LedgerBackendID returns the asset ID of the asset.
+func (a Asset) LedgerBackendID() multi.LedgerBackendID {
 	return a.assetID
 }
 
@@ -141,12 +141,12 @@ func (a *Asset) UnmarshalBinary(data []byte) error {
 
 // LedgerID returns the ledger ID the asset lives on.
 func (a Asset) LedgerID() multi.LedgerID {
-	return a.AssetID().LedgerID()
+	return a.LedgerBackendID().LedgerID()
 }
 
 // NewAsset creates a new asset from an chainID and the AssetHolder address.
 func NewAsset(chainID *big.Int, assetHolder common.Address) *Asset {
-	id := MakeAssetID(chainID).(AssetID) //nolint: forcetypeassert // AssetID implements multi.AssetID
+	id := MakeLedgerBackendID(chainID).(AssetID) //nolint: forcetypeassert // LedgerBackendID implements multi.LedgerBackendID
 	return &Asset{assetID: id, AssetHolder: *wallet.AsWalletAddr(assetHolder)}
 }
 
diff --git a/channel/asset_test.go b/channel/asset_test.go
index 76b4f39..6b4181e 100644
--- a/channel/asset_test.go
+++ b/channel/asset_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/backend.go b/channel/backend.go
index 31a11da..cae5f53 100644
--- a/channel/backend.go
+++ b/channel/backend.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -177,17 +177,11 @@ func ToEthParams(p *channel.Params) adjudicator.ChannelParams {
 // ToEthState converts a channel.State to a ChannelState struct.
 func ToEthState(s *channel.State) adjudicator.ChannelState {
 	backends := make([]*big.Int, len(s.Allocation.Assets))
-	channelIDs := make([]channel.ID, len(s.Allocation.Assets))
 	for i := range s.Allocation.Assets { // we assume that for each asset there is an element in backends corresponding to the backendID the asset belongs to.
 		backends[i] = big.NewInt(int64(s.Allocation.Backends[i]))
-		channelIDs[i] = s.ID[s.Allocation.Backends[i]]
 	}
 	locked := make([]adjudicator.ChannelSubAlloc, len(s.Locked))
 	for i, sub := range s.Locked {
-		subIDs := make([]channel.ID, len(backends))
-		for j := range subIDs {
-			subIDs[j] = sub.ID[s.Allocation.Backends[j]]
-		}
 		// Create index map.
 		indexMap := make([]uint16, s.NumParts())
 		if len(sub.IndexMap) == 0 {
@@ -200,7 +194,7 @@ func ToEthState(s *channel.State) adjudicator.ChannelState {
 			}
 		}
 
-		locked[i] = adjudicator.ChannelSubAlloc{ID: subIDs, Balances: sub.Bals, IndexMap: indexMap}
+		locked[i] = adjudicator.ChannelSubAlloc{ID: sub.ID, Balances: sub.Bals, IndexMap: indexMap}
 	}
 	outcome := adjudicator.ChannelAllocation{
 		Assets:   assetsToEthAssets(s.Allocation.Assets, s.Allocation.Backends),
@@ -217,7 +211,7 @@ func ToEthState(s *channel.State) adjudicator.ChannelState {
 		log.Panicf("error encoding app data: %v", err)
 	}
 	return adjudicator.ChannelState{
-		ChannelID: channelIDs,
+		ChannelID: s.ID,
 		Version:   s.Version,
 		Outcome:   outcome,
 		AppData:   appData,
@@ -264,20 +258,14 @@ func pwToCommonAddresses(addr []map[wallet.BackendID]wallet.Address) []adjudicat
 
 // FromEthState converts a ChannelState to a channel.State struct.
 func FromEthState(app channel.App, s *adjudicator.ChannelState) channel.State {
-	channelIDs := make(map[wallet.BackendID]channel.ID)
 	backends := make([]wallet.BackendID, len(s.Outcome.Backends))
 	for i, b := range s.Outcome.Backends {
 		backends[i] = wallet.BackendID(b.Int64())
-		channelIDs[backends[i]] = s.ChannelID[i]
 	}
 	locked := make([]channel.SubAlloc, len(s.Outcome.Locked))
 	for i, sub := range s.Outcome.Locked {
-		subIDs := make(map[wallet.BackendID]channel.ID)
-		for j := range s.Outcome.Backends {
-			subIDs[backends[j]] = sub.ID[j]
-		}
 		indexMap := makeIndexMap(sub.IndexMap)
-		locked[i] = *channel.NewSubAlloc(subIDs, sub.Balances, indexMap)
+		locked[i] = *channel.NewSubAlloc(sub.ID, sub.Balances, indexMap)
 	}
 	alloc := channel.Allocation{
 		Assets:   fromEthAssets(s.Outcome.Assets, backends),
@@ -296,7 +284,7 @@ func FromEthState(app channel.App, s *adjudicator.ChannelState) channel.State {
 	}
 
 	return channel.State{
-		ID:         channelIDs,
+		ID:         s.ChannelID,
 		Version:    s.Version,
 		Allocation: alloc,
 		App:        app,
diff --git a/channel/backend_test.go b/channel/backend_test.go
index 5f8ae21..eac20a9 100644
--- a/channel/backend_test.go
+++ b/channel/backend_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,6 +20,8 @@ import (
 	"testing"
 	"time"
 
+	"github.com/perun-network/perun-eth-backend/wallet"
+
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -42,7 +44,7 @@ func TestState_ToAndFromEth(t *testing.T) {
 		rng := pkgtest.Prng(t)
 
 		for i := 0; i < 100; i++ {
-			state := test.NewRandomState(rng, test.WithBackend(1))
+			state := test.NewRandomState(rng, test.WithBackend(wallet.BackendID))
 			testToAndFromEthState(t, state)
 		}
 	})
@@ -51,7 +53,7 @@ func TestState_ToAndFromEth(t *testing.T) {
 		rng := pkgtest.Prng(t)
 
 		for i := 0; i < 100; i++ {
-			state := test.NewRandomState(rng, test.WithBackend(1), test.WithNumLocked(int(rng.Int31n(10))))
+			state := test.NewRandomState(rng, test.WithBackend(wallet.BackendID), test.WithNumLocked(int(rng.Int31n(10))))
 			testToAndFromEthState(t, state)
 		}
 	})
@@ -88,7 +90,7 @@ func TestAdjudicator_PureFunctions(t *testing.T) {
 func testCalcID(t *testing.T, rng *rand.Rand, contr *adjudicator.Adjudicator, opts *bind.CallOpts) {
 	t.Helper()
 	for i := 0; i < 100; i++ {
-		opt := test.WithBackend(1)
+		opt := test.WithBackend(wallet.BackendID)
 		params := test.NewRandomParams(rng, opt)
 		ethParams := channel.ToEthParams(params)
 		ethID, err := contr.ChannelID(opts, ethParams)
@@ -108,7 +110,7 @@ func testCalcID(t *testing.T, rng *rand.Rand, contr *adjudicator.Adjudicator, op
 func testHashState(t *testing.T, rng *rand.Rand, contr *adjudicator.Adjudicator, opts *bind.CallOpts) {
 	t.Helper()
 	for i := 0; i < 100; i++ {
-		state := test.NewRandomState(rng, test.WithBackend(1))
+		state := test.NewRandomState(rng, test.WithBackend(wallet.BackendID))
 		ethState := channel.ToEthState(state)
 		ethHash, err := contr.HashState(opts, ethState)
 		require.NoError(t, err)
@@ -130,11 +132,11 @@ func TestGenericTests(t *testing.T) {
 }
 
 func newChannelSetup(rng *rand.Rand) *test.Setup {
-	params, state := test.NewRandomParamsAndState(rng, test.WithNumLocked(int(rng.Int31n(4)+1)), test.WithBackend(1))
-	params2, state2 := test.NewRandomParamsAndState(rng, test.WithIsFinal(!state.IsFinal), test.WithNumLocked(int(rng.Int31n(4)+1)), test.WithBackend(1))
+	params, state := test.NewRandomParamsAndState(rng, test.WithNumLocked(int(rng.Int31n(4)+1)), test.WithBackend(wallet.BackendID))
+	params2, state2 := test.NewRandomParamsAndState(rng, test.WithIsFinal(!state.IsFinal), test.WithNumLocked(int(rng.Int31n(4)+1)), test.WithBackend(wallet.BackendID))
 
 	createAddr := func() map[perunwallet.BackendID]perunwallet.Address {
-		return map[perunwallet.BackendID]perunwallet.Address{1: wallettest.NewRandomAddress(rng, 1)}
+		return map[perunwallet.BackendID]perunwallet.Address{wallet.BackendID: wallettest.NewRandomAddress(rng, wallet.BackendID)}
 	}
 
 	return &test.Setup{
@@ -142,7 +144,7 @@ func newChannelSetup(rng *rand.Rand) *test.Setup {
 		Params2:       params2,
 		State:         state,
 		State2:        state2,
-		Account:       wallettest.NewRandomAccount(rng, 1),
+		Account:       wallettest.NewRandomAccount(rng, wallet.BackendID),
 		RandomAddress: createAddr,
 	}
 }
diff --git a/channel/conclude.go b/channel/conclude.go
index 78d57d4..23dd514 100644
--- a/channel/conclude.go
+++ b/channel/conclude.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -18,8 +18,6 @@ import (
 	"context"
 	"fmt"
 
-	"perun.network/go-perun/wallet"
-
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/pkg/errors"
@@ -49,11 +47,7 @@ func MakeStateMap() StateMap {
 // Add adds the given states to the state map.
 func (m StateMap) Add(states ...*channel.State) {
 	for _, s := range states {
-		for key, id := range s.ID {
-			if key == 1 {
-				m[id] = s
-			}
-		}
+		m[s.ID] = s
 	}
 }
 
@@ -94,7 +88,7 @@ func (a *Adjudicator) ensureConcluded(ctx context.Context, req channel.Adjudicat
 	}
 
 	// Wait for concluded event.
-	sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID[1], false)
+	sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID, false)
 	if err != nil {
 		return errors.WithMessage(err, "subscribing")
 	}
@@ -188,7 +182,7 @@ func (a *Adjudicator) waitConcludedSecondary(ctx context.Context, req channel.Ad
 	// `secondaryWaitBlocks + TxFinalityDepth` many blocks.
 	if req.Tx.IsFinal && req.Secondary {
 		// Create subscription.
-		sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID[1], false)
+		sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID, false)
 		if err != nil {
 			return false, errors.WithMessage(err, "subscribing")
 		}
@@ -203,7 +197,7 @@ func (a *Adjudicator) waitConcludedSecondary(ctx context.Context, req channel.Ad
 
 func (a *Adjudicator) conclude(ctx context.Context, req channel.AdjudicatorReq, subStates channel.StateMap) error {
 	// If the on-chain state resulted from forced execution, we do not have a fully-signed state and cannot call concludeFinal.
-	forceExecuted, err := a.isForceExecuted(ctx, req.Params.ID()[1])
+	forceExecuted, err := a.isForceExecuted(ctx, req.Params.ID())
 	if err != nil {
 		return errors.WithMessage(err, "checking force execution")
 	}
@@ -221,8 +215,8 @@ func (a *Adjudicator) conclude(ctx context.Context, req channel.AdjudicatorReq,
 }
 
 // isConcluded returns whether a channel is already concluded.
-func (a *Adjudicator) isConcluded(ctx context.Context, ch map[wallet.BackendID]channel.ID) (bool, error) {
-	sub, events, subErr, err := a.createEventSub(ctx, ch[1], true)
+func (a *Adjudicator) isConcluded(ctx context.Context, ch channel.ID) (bool, error) {
+	sub, events, subErr, err := a.createEventSub(ctx, ch, true)
 	if err != nil {
 		return false, errors.WithMessage(err, "subscribing")
 	}
@@ -283,7 +277,7 @@ func (a *Adjudicator) waitConcludable(ctx context.Context, req channel.Adjudicat
 		return nil
 	}
 
-	sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID[1], true)
+	sub, events, subErr, err := a.createEventSub(ctx, req.Tx.ID, true)
 	if err != nil {
 		return errors.WithMessage(err, "subscribing")
 	}
diff --git a/channel/conclude_test.go b/channel/conclude_test.go
index afed400..20c754e 100644
--- a/channel/conclude_test.go
+++ b/channel/conclude_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -19,6 +19,8 @@ import (
 	"math/rand"
 	"testing"
 
+	test2 "github.com/perun-network/perun-eth-backend/wallet/test"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -50,7 +52,7 @@ func testConcludeFinal(t *testing.T, numParts int) {
 		rng,
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(test2.BackendID),
 		channeltest.WithIsFinal(true),
 		channeltest.WithLedgerChannel(true),
 	)
@@ -78,7 +80,7 @@ func testConcludeFinal(t *testing.T, numParts int) {
 		go ct.StageN("register", numParts, func(t pkgtest.ConcT) {
 			req := channel.AdjudicatorReq{
 				Params:    params,
-				Acc:       map[wallet.BackendID]wallet.Account{1: s.Accs[i]},
+				Acc:       map[wallet.BackendID]wallet.Account{test2.BackendID: s.Accs[i]},
 				Idx:       channel.Index(i),
 				Tx:        tx,
 				Secondary: (i != initiator),
@@ -175,7 +177,7 @@ func TestAdjudicator_ConcludeWithSubChannels(t *testing.T) {
 
 func toSubChannelsRecursive(ch paramsAndState, m channelMap) (states []paramsAndState) {
 	for _, x := range ch.state.Locked {
-		ch, ok := m[x.ID[1]]
+		ch, ok := m[x.ID]
 		if !ok {
 			panic("sub-state not found")
 		}
@@ -190,7 +192,7 @@ type channelMap map[channel.ID]paramsAndState
 
 func (m channelMap) Add(states ...paramsAndState) {
 	for _, s := range states {
-		m[s.state.ID[1]] = s
+		m[s.state.ID] = s
 	}
 }
 
@@ -204,7 +206,7 @@ func makeRandomChannel(rng *rand.Rand, participants []map[wallet.BackendID]walle
 		rng,
 		channeltest.WithParts(participants),
 		channeltest.WithAssets(asset),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(test2.BackendID),
 		channeltest.WithIsFinal(false),
 		channeltest.WithNumLocked(0),
 		channeltest.WithoutApp(),
@@ -257,7 +259,7 @@ func register(ctx context.Context, adj *test.SimAdjudicator, accounts []*keystor
 
 	req := channel.AdjudicatorReq{
 		Params:    ch.params,
-		Acc:       map[wallet.BackendID]wallet.Account{1: accounts[0]},
+		Acc:       map[wallet.BackendID]wallet.Account{test2.BackendID: accounts[0]},
 		Idx:       0,
 		Tx:        tx,
 		Secondary: false,
@@ -280,7 +282,7 @@ func withdraw(ctx context.Context, adj *test.SimAdjudicator, accounts []*keystor
 	for i, a := range accounts {
 		req := channel.AdjudicatorReq{
 			Params:    c.params,
-			Acc:       map[wallet.BackendID]wallet.Account{1: a},
+			Acc:       map[wallet.BackendID]wallet.Account{test2.BackendID: a},
 			Idx:       channel.Index(i),
 			Tx:        tx,
 			Secondary: i != 0,
diff --git a/channel/contractbackend.go b/channel/contractbackend.go
index 463f26e..4c76996 100644
--- a/channel/contractbackend.go
+++ b/channel/contractbackend.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/contractbackend_test.go b/channel/contractbackend_test.go
index 36e7933..6ebc887 100644
--- a/channel/contractbackend_test.go
+++ b/channel/contractbackend_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,6 +20,8 @@ import (
 	"testing"
 	"time"
 
+	test2 "github.com/perun-network/perun-eth-backend/wallet/test"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/params"
@@ -42,35 +44,35 @@ func Test_calcFundingIDs(t *testing.T) {
 	tests := []struct {
 		name         string
 		participants []map[wallet.BackendID]wallet.Address
-		channelID    map[wallet.BackendID][32]byte
+		channelID    [32]byte
 		want         [][32]byte
 	}{
-		{"Test nil array, empty channelID", nil, map[wallet.BackendID][32]byte{}, make([][32]byte, 0)},
-		{"Test nil array, non-empty channelID", nil, map[wallet.BackendID][32]byte{1: {1}}, make([][32]byte, 0)},
-		{"Test empty array, non-empty channelID", []map[wallet.BackendID]wallet.Address{}, map[wallet.BackendID][32]byte{1: {1}}, make([][32]byte, 0)},
+		{"Test nil array, empty channelID", nil, [32]byte{}, make([][32]byte, 0)},
+		{"Test nil array, non-empty channelID", nil, [32]byte{1}, make([][32]byte, 0)},
+		{"Test empty array, non-empty channelID", []map[wallet.BackendID]wallet.Address{}, [32]byte{1}, make([][32]byte, 0)},
 		// Tests based on actual data from contracts.
 		{
 			name:         "Test non-empty array, empty channelID",
-			participants: []map[wallet.BackendID]wallet.Address{{1: &ethwallet.Address{}}},
+			participants: []map[wallet.BackendID]wallet.Address{{test2.BackendID: &ethwallet.Address{}}},
 			want:         [][32]byte{{173, 50, 40, 182, 118, 247, 211, 205, 66, 132, 165, 68, 63, 23, 241, 150, 43, 54, 228, 145, 179, 10, 64, 178, 64, 88, 73, 229, 151, 186, 95, 181}},
 		},
 		{
 			"Test non-empty array, non-empty channelID",
-			[]map[wallet.BackendID]wallet.Address{{1: &ethwallet.Address{}}},
-			map[wallet.BackendID][32]byte{1: {1}},
+			[]map[wallet.BackendID]wallet.Address{{test2.BackendID: &ethwallet.Address{}}},
+			[32]byte{1},
 			[][32]byte{{130, 172, 39, 157, 178, 106, 32, 109, 155, 165, 169, 76, 7, 255, 148, 10, 234, 75, 59, 253, 232, 130, 14, 201, 95, 78, 250, 10, 207, 208, 213, 188}},
 		},
 		{
 			"Test non-empty array, non-empty channelID",
-			[]map[wallet.BackendID]wallet.Address{{1: fromEthAddr(common.BytesToAddress([]byte{}))}},
-			map[wallet.BackendID][32]byte{1: {1}},
+			[]map[wallet.BackendID]wallet.Address{{test2.BackendID: fromEthAddr(common.BytesToAddress([]byte{}))}},
+			[32]byte{1},
 			[][32]byte{{130, 172, 39, 157, 178, 106, 32, 109, 155, 165, 169, 76, 7, 255, 148, 10, 234, 75, 59, 253, 232, 130, 14, 201, 95, 78, 250, 10, 207, 208, 213, 188}},
 		},
 	}
 	for _, _tt := range tests {
 		tt := _tt
 		t.Run(tt.name, func(t *testing.T) {
-			got := ethchannel.FundingIDs(tt.channelID[1], tt.participants...)
+			got := ethchannel.FundingIDs(tt.channelID, tt.participants...)
 			assert.Equal(t, got, tt.want, "FundingIDs not as expected")
 		})
 	}
diff --git a/channel/erc20_depositor.go b/channel/erc20_depositor.go
index 0a0d7f0..2e72e7e 100644
--- a/channel/erc20_depositor.go
+++ b/channel/erc20_depositor.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/eth_depositor.go b/channel/eth_depositor.go
index cbb11ca..94702ce 100644
--- a/channel/eth_depositor.go
+++ b/channel/eth_depositor.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/funder.go b/channel/funder.go
index 9869356..9bae68e 100644
--- a/channel/funder.go
+++ b/channel/funder.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -168,7 +168,7 @@ func (f *Funder) Fund(ctx context.Context, request channel.FundingReq) error {
 	}
 
 	// Fund each asset, saving the TX in `txs` and the errors in `errg`.
-	txs, errg := f.fundAssets(ctx, ethAssets, channelID[1], request)
+	txs, errg := f.fundAssets(ctx, ethAssets, channelID, request)
 
 	// Wait for the TXs to be mined.
 	for a, asset := range ethAssets {
diff --git a/channel/funder_test.go b/channel/funder_test.go
index ef92362..cb6444a 100644
--- a/channel/funder_test.go
+++ b/channel/funder_test.go
@@ -80,7 +80,7 @@ func newFunderSetup(rng *rand.Rand) (
 ) {
 	n := 2
 	simBackend := test.NewSimulatedBackend()
-	ksWallet := wallettest.RandomWallet(1).(*keystore.Wallet)
+	ksWallet := wallettest.RandomWallet(ethwallet.BackendID).(*keystore.Wallet)
 	cb := ethchannel.NewContractBackend(
 		simBackend,
 		ethchannel.MakeChainID(simBackend.ChainID()),
@@ -94,12 +94,12 @@ func newFunderSetup(rng *rand.Rand) (
 
 	for i := 0; i < n; i++ {
 		assets[i] = *test.NewRandomAsset(rng)
-		accs[i] = accounts.Account{Address: ethwallet.AsEthAddr(wallettest.NewRandomAddress(rng, 1))}
+		accs[i] = accounts.Account{Address: ethwallet.AsEthAddr(wallettest.NewRandomAddress(rng, ethwallet.BackendID))}
 	}
 	// Use an ETH depositor with random addresses at index 0.
 	depositors[0] = ethchannel.NewETHDepositor(txETHGasLimit)
 	// Use an ERC20 depositor with random addresses at index 1.
-	token := wallettest.NewRandomAddress(rng, 1)
+	token := wallettest.NewRandomAddress(rng, ethwallet.BackendID)
 	depositors[1] = ethchannel.NewERC20Depositor(ethwallet.AsEthAddr(token), txERC20GasLimit)
 	return funder, assets, depositors, accs
 }
@@ -444,7 +444,7 @@ func newNFunders(
 	// Start the auto-mining of blocks.
 	simBackend.StartMining(blockInterval)
 	t.Cleanup(simBackend.StopMining)
-	ksWallet := wallettest.RandomWallet(1).(*keystore.Wallet)
+	ksWallet := wallettest.RandomWallet(ethwallet.BackendID).(*keystore.Wallet)
 
 	deployAccount := &ksWallet.NewRandomAccount(rng).(*keystore.Account).Account
 	simBackend.FundAddress(ctx, deployAccount.Address)
@@ -475,7 +475,7 @@ func newNFunders(
 	funders = make([]*ethchannel.Funder, n)
 	for i := range parts {
 		acc := ksWallet.NewRandomAccount(rng).(*keystore.Account).Account
-		parts[i] = map[wallet.BackendID]wallet.Address{1: ethwallet.AsWalletAddr(acc.Address)}
+		parts[i] = map[wallet.BackendID]wallet.Address{ethwallet.BackendID: ethwallet.AsWalletAddr(acc.Address)}
 
 		simBackend.FundAddress(ctx, ethwallet.AsEthAddr(parts[i][1]))
 		err = fundERC20(ctx, cb, *tokenAcc, ethwallet.AsEthAddr(parts[i][1]), token, *asset2)
@@ -493,12 +493,12 @@ func newNFunders(
 		rng,
 		channeltest.WithParts(parts),
 		channeltest.WithChallengeDuration(uint64(n)*40000),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 	)
 	allocation = channeltest.NewRandomAllocation(
 		rng,
 		channeltest.WithNumParts(n),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 		channeltest.WithAssets(
 			ethchannel.NewAsset(chainID, assetAddr1),
 			ethchannel.NewAsset(chainID, assetAddr2),
@@ -544,7 +544,7 @@ func compareOnChainAlloc(ctx context.Context, params *channel.Params, balances c
 }
 
 func onChainAllocation(ctx context.Context, cb *ethchannel.ContractBackend, params *channel.Params, _assets []channel.Asset) (channel.Balances, error) {
-	partIDs := ethchannel.FundingIDs(params.ID()[1], params.Parts...)
+	partIDs := ethchannel.FundingIDs(params.ID(), params.Parts...)
 	alloc := make(channel.Balances, len(_assets))
 
 	for k, asset := range _assets {
diff --git a/channel/init.go b/channel/init.go
index 9830d59..9725ab2 100644
--- a/channel/init.go
+++ b/channel/init.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -15,9 +15,10 @@
 package channel
 
 import (
+	"github.com/perun-network/perun-eth-backend/wallet"
 	"perun.network/go-perun/channel"
 )
 
 func init() {
-	channel.SetBackend(new(Backend), 1)
+	channel.SetBackend(new(Backend), wallet.BackendID)
 }
diff --git a/channel/init_test.go b/channel/init_test.go
index 0ac2460..f6e6371 100644
--- a/channel/init_test.go
+++ b/channel/init_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/register.go b/channel/register.go
index a0cd632..72920af 100644
--- a/channel/register.go
+++ b/channel/register.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/register_test.go b/channel/register_test.go
index c3372e2..e46c9b2 100644
--- a/channel/register_test.go
+++ b/channel/register_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@ import (
 	"testing"
 	"time"
 
+	test2 "github.com/perun-network/perun-eth-backend/wallet/test"
+
 	"perun.network/go-perun/wallet"
 
 	"github.com/stretchr/testify/assert"
@@ -56,7 +58,7 @@ func registerMultiple(t *testing.T, numParts int, parallel bool) {
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
 		channeltest.WithChallengeDuration(uint64(100*time.Second)),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(test2.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(false),
@@ -153,7 +155,7 @@ func TestRegister_FinalState(t *testing.T) {
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
 		channeltest.WithChallengeDuration(uint64(100*time.Second)),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(test2.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(true),
@@ -177,7 +179,7 @@ func TestRegister_FinalState(t *testing.T) {
 	tx := testSignState(t, s.Accs, state)
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{test2.BackendID: s.Accs[0]},
 		Idx:    channel.Index(0),
 		Tx:     tx,
 	}
@@ -196,7 +198,7 @@ func TestRegister_CancelledContext(t *testing.T) {
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
 		channeltest.WithChallengeDuration(uint64(100*time.Second)),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(test2.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(false),
@@ -221,7 +223,7 @@ func TestRegister_CancelledContext(t *testing.T) {
 	tx := testSignState(t, s.Accs, state)
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{test2.BackendID: s.Accs[0]},
 		Idx:    channel.Index(0),
 		Tx:     tx,
 	}
diff --git a/channel/reorg_test.go b/channel/reorg_test.go
index 2cb84db..e5f5ea5 100644
--- a/channel/reorg_test.go
+++ b/channel/reorg_test.go
@@ -1,4 +1,4 @@
-// Copyright 2021 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/subscription.go b/channel/subscription.go
index 3b210fe..480624d 100644
--- a/channel/subscription.go
+++ b/channel/subscription.go
@@ -19,8 +19,6 @@ import (
 	"log"
 	"math/big"
 
-	perunwallet "perun.network/go-perun/wallet"
-
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/accounts/abi"
 	"github.com/ethereum/go-ethereum/common"
@@ -35,14 +33,14 @@ import (
 )
 
 // Subscribe returns a new AdjudicatorSubscription to adjudicator events.
-func (a *Adjudicator) Subscribe(ctx context.Context, chID map[perunwallet.BackendID]channel.ID) (channel.AdjudicatorSubscription, error) {
+func (a *Adjudicator) Subscribe(ctx context.Context, chID channel.ID) (channel.AdjudicatorSubscription, error) {
 	subErr := make(chan error, 1)
 	events := make(chan *subscription.Event, adjEventBuffSize)
 	eFact := func() *subscription.Event {
 		return &subscription.Event{
 			Name:   bindings.Events.AdjChannelUpdate,
 			Data:   new(adjudicator.AdjudicatorChannelUpdate),
-			Filter: [][]interface{}{{chID[1]}},
+			Filter: [][]interface{}{{chID}},
 		}
 	}
 	sub, err := subscription.Subscribe(ctx, a.ContractBackend, a.bound, eFact, startBlockOffset, a.txFinalityDepth)
@@ -253,18 +251,11 @@ type registerCallData struct {
 
 func (args *registerCallData) signedState(id channel.ID) (*adjudicator.AdjudicatorSignedState, bool) {
 	ch := &args.Channel
-	var idx int
-	// check which channelID we want to compare
-	for i, b := range ch.State.Outcome.Backends {
-		if b.Cmp(big.NewInt(1)) == 0 {
-			idx = i
-		}
-	}
-	if ch.State.ChannelID[idx] == id {
+	if ch.State.ChannelID == id {
 		return ch, true
 	}
 	for _, ch := range args.SubChannels {
-		if ch.State.ChannelID[idx] == id {
+		if ch.State.ChannelID == id {
 			return &ch, true
 		}
 	}
diff --git a/channel/test/adjudicator.go b/channel/test/adjudicator.go
index 7921a48..b3ea431 100644
--- a/channel/test/adjudicator.go
+++ b/channel/test/adjudicator.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,8 +20,6 @@ import (
 	"log"
 	"time"
 
-	"perun.network/go-perun/wallet"
-
 	"github.com/ethereum/go-ethereum/accounts"
 	"github.com/ethereum/go-ethereum/common"
 	ethchannel "github.com/perun-network/perun-eth-backend/channel"
@@ -57,7 +55,7 @@ func NewSimAdjudicator(backend ethchannel.ContractBackend, contract common.Addre
 
 // Subscribe returns a RegisteredEvent subscription on the simulated
 // blockchain backend.
-func (a *SimAdjudicator) Subscribe(ctx context.Context, chID map[wallet.BackendID]channel.ID) (channel.AdjudicatorSubscription, error) {
+func (a *SimAdjudicator) Subscribe(ctx context.Context, chID channel.ID) (channel.AdjudicatorSubscription, error) {
 	sub, err := a.Adjudicator.Subscribe(ctx, chID)
 	if err != nil {
 		return nil, err
diff --git a/channel/test/init.go b/channel/test/init.go
index 92d54b0..9b9a988 100644
--- a/channel/test/init.go
+++ b/channel/test/init.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/test/randomizer.go b/channel/test/randomizer.go
index 923d934..d7ad0f7 100644
--- a/channel/test/randomizer.go
+++ b/channel/test/randomizer.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -38,9 +38,9 @@ func NewRandomAsset(rng *rand.Rand) *ethchannel.Asset {
 	return ethchannel.NewAsset(chainID.ChainID(), common.Address(asset))
 }
 
-// NewRandomChainID returns a new random AssetID.
+// NewRandomChainID returns a new random LedgerBackendID.
 func NewRandomChainID(rng *rand.Rand) ethchannel.AssetID {
 	r := rng.Uint64()
 	id := new(big.Int).SetUint64(r)
-	return ethchannel.MakeAssetID(id).(ethchannel.AssetID)
+	return ethchannel.MakeLedgerBackendID(id).(ethchannel.AssetID)
 }
diff --git a/channel/test/setup.go b/channel/test/setup.go
index 61d198c..34d0cd9 100644
--- a/channel/test/setup.go
+++ b/channel/test/setup.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -64,7 +64,7 @@ type (
 func NewSimSetup(t *testing.T, rng *rand.Rand, txFinalityDepth uint64, blockInterval time.Duration, opts ...SimBackendOpt) *SimSetup {
 	t.Helper()
 	simBackend := NewSimulatedBackend(opts...)
-	ksWallet := wallettest.RandomWallet(1).(*keystore.Wallet)
+	ksWallet := wallettest.RandomWallet(ethwallet.BackendID).(*keystore.Wallet)
 	txAccount := ksWallet.NewRandomAccount(rng).(*keystore.Account)
 	ctx, cancel := context.WithTimeout(context.Background(), defaultSetupTimeout)
 	defer cancel()
@@ -115,12 +115,12 @@ func NewSetup(t *testing.T, rng *rand.Rand, n int, blockInterval time.Duration,
 	require.NoError(t, err)
 	s.Asset = ethchannel.NewAsset(s.SimBackend.ChainID(), assetHolder)
 
-	ksWallet := wallettest.RandomWallet(1).(*keystore.Wallet)
+	ksWallet := wallettest.RandomWallet(ethwallet.BackendID).(*keystore.Wallet)
 	for i := 0; i < n; i++ {
 		s.Accs[i] = ksWallet.NewRandomAccount(rng).(*keystore.Account)
-		s.Parts[i] = map[wallet.BackendID]wallet.Address{1: s.Accs[i].Address()}
+		s.Parts[i] = map[wallet.BackendID]wallet.Address{ethwallet.BackendID: s.Accs[i].Address()}
 		s.SimBackend.FundAddress(ctx, s.Accs[i].Account.Address)
-		s.Recvs[i] = map[wallet.BackendID]*ethwallet.Address{1: ksWallet.NewRandomAccount(rng).Address().(*ethwallet.Address)}
+		s.Recvs[i] = map[wallet.BackendID]*ethwallet.Address{ethwallet.BackendID: ksWallet.NewRandomAccount(rng).Address().(*ethwallet.Address)}
 		cb := ethchannel.NewContractBackend(
 			s.SimBackend,
 			ethchannel.MakeChainID(s.SimBackend.ChainID()),
diff --git a/channel/test/tokensetup.go b/channel/test/tokensetup.go
index aa9d7ca..51cd46e 100644
--- a/channel/test/tokensetup.go
+++ b/channel/test/tokensetup.go
@@ -1,4 +1,4 @@
-// Copyright 2021 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/channel/withdraw.go b/channel/withdraw.go
index 65c4c7a..9b331a3 100644
--- a/channel/withdraw.go
+++ b/channel/withdraw.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -67,7 +67,7 @@ func (a *Adjudicator) ensureWithdrawn(ctx context.Context, req channel.Adjudicat
 		g.Go(func() error {
 			// Create subscription
 			contract := bindAssetHolder(a.ContractBackend, asset, index)
-			fundingID := FundingIDs(req.Params.ID()[1], req.Params.Parts[req.Idx])[0]
+			fundingID := FundingIDs(req.Params.ID(), req.Params.Parts[req.Idx])[0]
 			events := make(chan *subscription.Event, adjEventBuffSize)
 			subErr := make(chan error, 1)
 			sub, err := subscription.Subscribe(ctx, a.ContractBackend, contract.contract, withdrawnEventType(fundingID), startBlockOffset, a.txFinalityDepth)
@@ -165,14 +165,14 @@ func (a *Adjudicator) callAssetWithdraw(ctx context.Context, request channel.Adj
 }
 
 func (a *Adjudicator) newWithdrawalAuth(request channel.AdjudicatorReq, asset assetHolder) (assetholder.AssetHolderWithdrawalAuth, []byte, error) {
-	fid := FundingID(request.Tx.ID[1], request.Params.Parts[request.Idx][1])
+	fid := FundingID(request.Tx.ID, request.Params.Parts[request.Idx][1])
 	bal, err := asset.Assetholder.Holdings(nil, fid)
 	if err != nil {
 		return assetholder.AssetHolderWithdrawalAuth{}, nil, fmt.Errorf("getting balance: %w", err)
 	}
 
 	auth := assetholder.AssetHolderWithdrawalAuth{
-		ChannelID:   request.Params.ID()[1],
+		ChannelID:   request.Params.ID(),
 		Participant: wallet.AsChannelParticipant(wallet.AddressMapfromAccountMap(request.Acc)),
 		Receiver:    a.Receiver,
 		Amount:      bal,
diff --git a/channel/withdraw_test.go b/channel/withdraw_test.go
index dd25cea..cb9bb5d 100644
--- a/channel/withdraw_test.go
+++ b/channel/withdraw_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -58,7 +58,7 @@ func withdrawMultipleConcurrentFinal(t *testing.T, numParts int, parallel bool)
 		rng,
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 		channeltest.WithIsFinal(false),
 		channeltest.WithLedgerChannel(true),
 	)
@@ -96,7 +96,7 @@ func withdrawMultipleConcurrentFinal(t *testing.T, numParts int, parallel bool)
 				time.Sleep(sleepDuration)
 				req := channel.AdjudicatorReq{
 					Params: params,
-					Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[i]},
+					Acc:    map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[i]},
 					Idx:    channel.Index(i),
 					Tx:     tx,
 				}
@@ -110,7 +110,7 @@ func withdrawMultipleConcurrentFinal(t *testing.T, numParts int, parallel bool)
 		for i := 0; i < numParts; i++ {
 			req := channel.AdjudicatorReq{
 				Params: params,
-				Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[i]},
+				Acc:    map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[i]},
 				Idx:    channel.Index(i),
 				Tx:     tx,
 			}
@@ -136,7 +136,7 @@ func testWithdrawZeroBalance(t *testing.T, n int) {
 	// create valid state and params
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(true),
@@ -166,7 +166,7 @@ func testWithdrawZeroBalance(t *testing.T, n int) {
 	// register
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[0]},
 		Tx:     testSignState(t, s.Accs, state),
 		Idx:    0,
 	}
@@ -176,7 +176,7 @@ func testWithdrawZeroBalance(t *testing.T, n int) {
 	// withdraw
 	for i, _adj := range s.Adjs {
 		adj := _adj
-		req.Acc = map[wallet.BackendID]wallet.Account{1: s.Accs[i]}
+		req.Acc = map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[i]}
 		req.Idx = channel.Index(i)
 		// check that the nonce stays the same for zero balance withdrawals
 		diff, err := test.NonceDiff(s.Accs[i].Address(), adj, func() error {
@@ -199,7 +199,7 @@ func TestWithdraw(t *testing.T) {
 	// create valid state and params
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(false),
@@ -213,7 +213,7 @@ func TestWithdraw(t *testing.T) {
 	require.NoError(t, s.Funders[0].Fund(fundingCtx, *fundingReq), "funding should succeed")
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[0]},
 		Idx:    channel.Index(0),
 	}
 
@@ -264,7 +264,7 @@ func TestWithdrawNonFinal(t *testing.T) {
 	params, state := channeltest.NewRandomParamsAndState(
 		rng,
 		channeltest.WithChallengeDuration(60),
-		channeltest.WithBackend(1),
+		channeltest.WithBackend(ethwallet.BackendID),
 		channeltest.WithParts(s.Parts),
 		channeltest.WithAssets(s.Asset),
 		channeltest.WithIsFinal(false),
@@ -286,7 +286,7 @@ func TestWithdrawNonFinal(t *testing.T) {
 	// register
 	req := channel.AdjudicatorReq{
 		Params: params,
-		Acc:    map[wallet.BackendID]wallet.Account{1: s.Accs[0]},
+		Acc:    map[wallet.BackendID]wallet.Account{ethwallet.BackendID: s.Accs[0]},
 		Idx:    0,
 		Tx:     testSignState(t, s.Accs, state),
 	}
diff --git a/client/app_test.go b/client/app_test.go
index 422c5ed..97d0391 100644
--- a/client/app_test.go
+++ b/client/app_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -54,7 +54,7 @@ func TestProgression(t *testing.T) {
 		BaseExecConfig: clienttest.MakeBaseExecConfig(
 			clientAddresses(roleSetups),
 			backendSetup.Asset,
-			1,
+			ethwallet.BackendID,
 			[2]*big.Int{big.NewInt(99), big.NewInt(1)},
 			client.WithApp(app, channel.NewMockOp(channel.OpValid)),
 		),
diff --git a/client/payment_test.go b/client/payment_test.go
index ce62927..708870b 100644
--- a/client/payment_test.go
+++ b/client/payment_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -67,9 +67,9 @@ func TestPaymentHappy(t *testing.T) {
 		BaseExecConfig: clienttest.MakeBaseExecConfig(
 			[2]map[perunwallet.BackendID]wire.Address{wire.AddressMapfromAccountMap(setup[A].Identity), wire.AddressMapfromAccountMap(setup[B].Identity)},
 			s.Asset,
-			1,
+			wallet.BackendID,
 			[2]*big.Int{big.NewInt(100), big.NewInt(100)},
-			client.WithApp(chtest.NewRandomAppAndData(rng, chtest.WithBackend(1))),
+			client.WithApp(chtest.NewRandomAppAndData(rng, chtest.WithBackend(wallet.BackendID))),
 		),
 		NumPayments: [2]int{2, 2},
 		TxAmounts:   [2]*big.Int{big.NewInt(5), big.NewInt(3)},
@@ -127,7 +127,7 @@ func TestPaymentDispute(t *testing.T) {
 		BaseExecConfig: clienttest.MakeBaseExecConfig(
 			[2]map[perunwallet.BackendID]wire.Address{wire.AddressMapfromAccountMap(setup[A].Identity), wire.AddressMapfromAccountMap(setup[B].Identity)},
 			s.Asset,
-			1,
+			wallet.BackendID,
 			[2]*big.Int{big.NewInt(100), big.NewInt(1)},
 			client.WithoutApp(),
 		),
diff --git a/client/subchannel_test.go b/client/subchannel_test.go
index e539880..65d2c36 100644
--- a/client/subchannel_test.go
+++ b/client/subchannel_test.go
@@ -1,4 +1,4 @@
-// Copyright 2022 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/client/test/multiledger.go b/client/test/multiledger.go
index 408357a..0364fed 100644
--- a/client/test/multiledger.go
+++ b/client/test/multiledger.go
@@ -1,4 +1,4 @@
-// Copyright 2022 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -101,8 +101,8 @@ type testLedger struct {
 }
 
 // AssetID returns the asset ID of the ledger.
-func (l testLedger) AssetID() multi.AssetID {
-	return ethchannel.MakeAssetID(ethchannel.MakeChainID(l.simSetup.SimBackend.ChainID()).Int)
+func (l testLedger) AssetID() multi.LedgerBackendID {
+	return ethchannel.MakeLedgerBackendID(ethchannel.MakeChainID(l.simSetup.SimBackend.ChainID()).Int)
 }
 
 func setupLedger(ctx context.Context, t *testing.T, rng *rand.Rand, chainID *big.Int) testLedger {
@@ -133,7 +133,7 @@ func setupClient(t *testing.T, rng *rand.Rand, l1, l2 testLedger, bus wire.Bus)
 	require := require.New(t)
 
 	// Setup wallet and account.
-	w := map[wallet.BackendID]wtest.Wallet{1: wtest.RandomWallet(1).(*keystore.Wallet)}
+	w := map[wallet.BackendID]wtest.Wallet{ethwallet.BackendID: wtest.RandomWallet(ethwallet.BackendID).(*keystore.Wallet)}
 	acc := w[1].NewRandomAccount(rng).(*keystore.Account)
 
 	// Setup contract backends.
@@ -180,9 +180,9 @@ func setupClient(t *testing.T, rng *rand.Rand, l1, l2 testLedger, bus wire.Bus)
 
 	walletAddr := acc.Address().(*ethwallet.Address)
 	wireAddr := &ethwire.Address{Address: walletAddr}
-	perunWallet := map[wallet.BackendID]wallet.Wallet{1: w[1]}
+	perunWallet := map[wallet.BackendID]wallet.Wallet{ethwallet.BackendID: w[ethwallet.BackendID]}
 	c, err := client.New(
-		map[wallet.BackendID]wire.Address{1: wireAddr},
+		map[wallet.BackendID]wire.Address{ethwallet.BackendID: wireAddr},
 		bus,
 		multiFunder,
 		multiAdj,
@@ -195,8 +195,8 @@ func setupClient(t *testing.T, rng *rand.Rand, l1, l2 testLedger, bus wire.Bus)
 		Client:         c,
 		Adjudicator1:   adjL1,
 		Adjudicator2:   adjL2,
-		WireAddress:    map[wallet.BackendID]wire.Address{1: wireAddr},
-		WalletAddress:  map[wallet.BackendID]wallet.Address{1: walletAddr},
+		WireAddress:    map[wallet.BackendID]wire.Address{ethwallet.BackendID: wireAddr},
+		WalletAddress:  map[wallet.BackendID]wallet.Address{ethwallet.BackendID: walletAddr},
 		Events:         make(chan channel.AdjudicatorEvent),
 		BalanceReader1: l1.simSetup.SimBackend.NewBalanceReader(acc.Address()),
 		BalanceReader2: l2.simSetup.SimBackend.NewBalanceReader(acc.Address()),
diff --git a/client/test/setup.go b/client/test/setup.go
index 612b5df..e66e64d 100644
--- a/client/test/setup.go
+++ b/client/test/setup.go
@@ -1,4 +1,4 @@
-// Copyright 2021 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -50,12 +50,12 @@ func MakeRoleSetups(rng *rand.Rand, s *ethctest.Setup, names []string) []clientt
 		}
 		setups[i] = clienttest.RoleSetup{
 			Name:        names[i],
-			Identity:    wiretest.NewRandomAccountMap(rng, 1),
+			Identity:    wiretest.NewRandomAccountMap(rng, ethwtest.BackendID),
 			Bus:         bus,
 			Funder:      s.Funders[i],
 			Adjudicator: s.Adjs[i],
 			Watcher:     watcher,
-			Wallet:      map[wallet.BackendID]wtest.Wallet{1: ethwtest.NewTmpWallet()},
+			Wallet:      map[wallet.BackendID]wtest.Wallet{ethwtest.BackendID: ethwtest.NewTmpWallet()},
 			Timeout:     DefaultTimeout,
 			// Scaled due to simbackend automining progressing faster than real time.
 			ChallengeDuration: challengeDurationBlocks * uint64(time.Second/BlockInterval),
diff --git a/go.mod b/go.mod
index a7a2bda..124ccf0 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/sirupsen/logrus v1.8.1
 	github.com/stretchr/testify v1.7.0
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	perun.network/go-perun v0.12.1-0.20241223112511-d463e822db12
+	perun.network/go-perun v0.12.1-0.20250128081648-21d0af4e234b
 	polycry.pt/poly-go v0.0.0-20220301085937-fb9d71b45a37
 )
 
diff --git a/go.sum b/go.sum
index 6c1dacd..947b32a 100644
--- a/go.sum
+++ b/go.sum
@@ -646,8 +646,8 @@ honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
-perun.network/go-perun v0.12.1-0.20241223112511-d463e822db12 h1:wLiF8lSX+rrnO4W359gxbW8FH2HilEb3LGzeqGLnj68=
-perun.network/go-perun v0.12.1-0.20241223112511-d463e822db12/go.mod h1:uH8iwi75alXDizxxDzH0A+6uqXPbagCpKfl8ECMv/cA=
+perun.network/go-perun v0.12.1-0.20250128081648-21d0af4e234b h1:6FeodthJZB10aWGk/DgtV2VicacyUnLaUoT8OUcwSms=
+perun.network/go-perun v0.12.1-0.20250128081648-21d0af4e234b/go.mod h1:uH8iwi75alXDizxxDzH0A+6uqXPbagCpKfl8ECMv/cA=
 polycry.pt/poly-go v0.0.0-20220301085937-fb9d71b45a37 h1:iA5GzEa/hHfVlQpimEjPV09NATwHXxSjWNB0VVodtew=
 polycry.pt/poly-go v0.0.0-20220301085937-fb9d71b45a37/go.mod h1:XUBrNtqgEhN3EEOP/5gh7IBd3xVHKidCjXDZfl9+kMU=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
diff --git a/subscription/eventsub_test.go b/subscription/eventsub_test.go
index d87767f..6ec75a2 100644
--- a/subscription/eventsub_test.go
+++ b/subscription/eventsub_test.go
@@ -1,4 +1,4 @@
-// Copyright 2021 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -178,14 +178,14 @@ func TestEventSub_Filter(t *testing.T) {
 	opts, err := cb.NewTransactor(ctx, txGasLimit, *account)
 	require.NoError(t, err)
 	opts.Value = big.NewInt(1)
-	tx, err := ah.Deposit(opts, fundingID[1], big.NewInt(1))
+	tx, err := ah.Deposit(opts, fundingID, big.NewInt(1))
 	require.NoError(t, err)
 	// Wait for the TX to be mined.
 	_, err = cb.ConfirmTransaction(ctx, tx, *account)
 	require.NoError(t, err)
 
 	// Create the filter.
-	Filter := []interface{}{fundingID[1]}
+	Filter := []interface{}{fundingID}
 	// Setup the event sub.
 	sink := make(chan *subscription.Event, 1)
 	eFact := func() *subscription.Event {
@@ -207,7 +207,7 @@ func TestEventSub_Filter(t *testing.T) {
 	e := <-sink
 	require.NotNil(t, e)
 	want := &assetholder.AssetholderDeposited{
-		FundingID: fundingID[1],
+		FundingID: fundingID,
 		Amount:    big.NewInt(int64(1)),
 	}
 	log.Debug("TX0 Hash: ", e.Log.TxHash)
diff --git a/wallet/address.go b/wallet/address.go
index daa551e..bc3253d 100644
--- a/wallet/address.go
+++ b/wallet/address.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/wallet/hd/wallet.go b/wallet/hd/wallet.go
index d9d1747..9d60d83 100644
--- a/wallet/hd/wallet.go
+++ b/wallet/hd/wallet.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/wallet/init.go b/wallet/init.go
index a351794..1df576f 100644
--- a/wallet/init.go
+++ b/wallet/init.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -18,6 +18,9 @@ import (
 	"perun.network/go-perun/wallet"
 )
 
+// BackendID is the ID of the Ethereum backend.
+const BackendID = 1
+
 func init() {
-	wallet.SetBackend(new(Backend), 1)
+	wallet.SetBackend(new(Backend), BackendID)
 }
diff --git a/wallet/keystore/transactor_test.go b/wallet/keystore/transactor_test.go
index f313d37..488e2d4 100644
--- a/wallet/keystore/transactor_test.go
+++ b/wallet/keystore/transactor_test.go
@@ -1,4 +1,4 @@
-// Copyright 2020 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/wallet/keystore/wallet_test.go b/wallet/keystore/wallet_test.go
index 8c7ca3c..36ede51 100644
--- a/wallet/keystore/wallet_test.go
+++ b/wallet/keystore/wallet_test.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/wallet/simple/wallet.go b/wallet/simple/wallet.go
index adc19d7..8df7a69 100644
--- a/wallet/simple/wallet.go
+++ b/wallet/simple/wallet.go
@@ -1,4 +1,4 @@
-// Copyright 2021 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
diff --git a/wallet/test/init.go b/wallet/test/init.go
index b34d479..7ef79f4 100644
--- a/wallet/test/init.go
+++ b/wallet/test/init.go
@@ -1,4 +1,4 @@
-// Copyright 2019 - See NOTICE file for copyright holders.
+// Copyright 2024 - See NOTICE file for copyright holders.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -19,12 +19,15 @@ import (
 	"perun.network/go-perun/wallet/test"
 )
 
+// BackendID is the ID of the Ethereum backend.
+const BackendID = 1
+
 var ks *keystore.KeyStore
 
 func init() {
 	rnd := newRandomizer()
 	ks = rnd.wallet.Ks
-	test.SetRandomizer(rnd, 1)
+	test.SetRandomizer(rnd, BackendID)
 }
 
 // Keystore returns the currently set keystore for tests.