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GitHub license TypeScript

IconBridge SDK for Javascript

ICON Bridge is an early iteration of ICON’s cutting-edge interoperability product, BTP, which allows cross-chain transfers and integration with any blockchain that supports smart contracts.

This SDK allows developers to easily integrate the ICON Bridge into their applications written in the Javascript programming language.

Installation

Install as an npm package using the following command:

npm install git@github.com:Espanicon/icon-bridge-sdk-js.git

Node v18 is a requirement to use the SDK.

HOW TO USE

For examples on how to use the IconBridgeSDK please refer to the examples folder.

API Specification

Module Description
IconBridge Class object that provides the API to use the ICON Bridge
IconBridge.[CHAIN] Methods for interacting with the ICON Bridge on each supported chain
IconBridge.sdkUtils Utility functions for the SDK

IconBridgeSDK

IconBridgeSDK is a class that provides the methods to communicate with the Icon Bridge.

Constructor

Creates an instance of the SDK.

new IconBridgeSDK({
  useMainnet: boolean,
  iconProvider: {
    hostname: string,
    nid: number
  },
  bscProvider: {
    hostname: string,
    nid: number | null
  }
})

Parameters

Parameter (?) Type Description
useMainnet ? boolean Use on mainnet or testnet for all chains in the bridge
iconProvider.hostname ? string URL of the ICON RPC Node
iconProvider.nid ? number OR null Network identifier of the ICON RPC Node
bscProvider.hostname ? string URL of the BSC RPC Node
bscProvider.nid ? number OR null Network indentifier of the BSC RPC Node

Example

// It can be instanciated without params and default values will be used. These values default to mainnet.
const SDK = new IconBridgeSDK()

// Params can be defined to use default params for mainnet and testnet
const SDK = new IconBridgeSDK({
  useMainnet: true
})
const SDK = new IconBridgeSDK({
  useMainnet: false
})

// you can define the RPC Nodes to use
const SDK = new IconBridgeSDK({
  iconProvider: {
  hostname: 'https://lisbon.net.solidwallet.io/api/v3/icon_dex'
  },
  bscProvider: {
    hostname: 'https://data-seed-prebsc-1-s1.binance.org:8545'
  }
})

IconBridge.icon

Methods for interacting with the ICON Bridge originating from the ICON Chain.

IconBridge.icon.methods

iconBridge.icon.methods offers all the readonly and signed methods available on the ICON Bridge to be called directly with a valid set of params. The SDK will internally make the appropiate http/https request, handle the response and return the result in an asynchronous way.

balanceOf(_owner, _coinName)

Gets the balance of a defined coin (_coinName) for a defined wallet (_owner).

Parameters
Parameter (?) Type Description
_owner address Wallet address to check
_coinName string Name of coin to check
Returns
{
  jsonrpc: '2.0',
  result: {
    locked: '0x0',
    refundable: '0x0',
    usable: '0x0',
    userBalance: '0x130ee8e7179044400000'
  },
  id: 470
}
Example
const balance = await SDK.icon.methods.balanceOf("hx0000000000000000000000000000000000000000", "btp-0x2.icon-ICX")

balanceOfBatch(_owner, _coinNames)

Parameters
Parameter (?) Type Description
_owner address Wallet address to check
_coinNames string[] List of coin names
Returns
{
  "jsonrpc":"2.0",
  "result":[
    {"locked":"0x0",
    "refundable":"0x0",
    "usable": "0x0",
    "userBalance":"0x128cce36434efac00000"
    }
  ],
  "id":140
}
Example
const balance = await SDK.icon.methods.balanceOfBatch("hx0000000000000000000000000000000000000000", ["btp-0x2.icon-ICX"])

coinNames()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result":[
    "btp-0x2.icon-ICX",
    "btp-0x2.icon-sICX",
    "btp-0x2.icon-bnUSD",
    "btp-0x61.bsc-BNB",
    "btp-0x61.bsc-BUSD",
    "btp-0x61.bsc-USDT",
    "btp-0x61.bsc-USDC",
    "btp-0x61.bsc-BTCB",
    "btp-0x61.bsc-ETH",
    "btp-0x228.snow-ICZ"
    ]
  "id":140
}
Example
const balance = await SDK.icon.methods.coinNames()

feeRatio(_coinName)

Parameters
Parameter (?) Type Description
_coinName string Name of coin to check
Returns
{
  "jsonrpc":"2.0",
  "result":{
    "feeNumerator":"0x64",
    "fixedFee":"0x3bacab37b62e0000"
    }
  "id":140
}
Example
const balance = await SDK.icon.methods.feeRatio("btp-0x2.icon-ICX")

getAccumulatedFees()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result":{
    "btp-0x2.icon-ICX":"0x16baa26c2d2280000",
    "btp-0x2.icon-bnUSD":"0x0",
    "btp-0x2.icon-sICX":"0x0",
    "btp-0x228.snow-ICZ":"0x0",
    "btp-0x61.bsc-BNB":"0x0",
    "btp-0x61.bsc-BTCB":"0x0",
    "btp-0x61.bsc-BUSD":"0x0",
    "btp-0x61.bsc-ETH":"0x0",
    "btp-0x61.bsc-USDC":"0x0",
    "btp-0x61.bsc-USDT":"0x0"
  },
  "id":140
}
Example
const balance = await SDK.icon.methods.getAccumulatedFees()

getOwners()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result":[
    "hx172ddb77bc9d9b000fac0f25505ce367bfbe96ad",
    "hx81da0f9f2203741bfee0883cc1b757bc2389f93f"
  ],
  "id":140
}
Example
const balance = await SDK.icon.methods.getOwners()

isOwners(_addr)

Parameters
Parameter (?) Type Description
_addr address Wallet address to check.
Returns
{
  "jsonrpc":"2.0",
  "result":"0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.isOwners("hx172ddb77bc9d9b000fac0f25505ce367bfbe96ad")

name()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result":"BTP Token Service",
  "id":140
}
Example
const balance = await SDK.icon.methods.name()

getTokenLimit(_name)

Parameters
Parameter (?) Type Description
_name string Name of token.
Returns
{
  "jsonrpc":"2.0",
  "result":"0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
  "id":140
}
Example
const balance = await SDK.icon.methods.getTokenLimit("btp-0x2.icon-sICX")

getTokenLimitTxn(_Sn)

Parameters
Parameter (?) Type Description
_Sn string Tx number.
Returns
{
  "jsonrpc":"2.0",
  "result":null,
  "id":140
}
Example
const balance = await SDK.icon.methods.getTokenLimitTxn("0x63")

getSn(_Sn)

Parameters
Parameter (?) Type Description
_Sn string Tx number.
Returns
{
  "jsonrpc":"2.0",
  "result": "0xaf",
  "id":140
}
Example
const balance = await SDK.icon.methods.getSn("0x63")

isUserBlackListed(_net, _address)

Parameters
Parameter (?) Type Description
_net string Network string identifier.
_address address Wallet address.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.isUserBlackListed("0x2.icon", "hx0169e03001a3fa4012092ad4a4ddf2d07681f063")

getBlackListedUsers(_net, _start, _end)

Parameters
Parameter (?) Type Description
_net string Network string identifier.
_start Number in Hexadecimal Start index.
_end Number in Hexadecimal End index.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.getBlackListedUsers(
  "0x2.icon",
  "0x0",
  "0x1"
)

getRegisteredTokensCount()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result": "0x9",
  "id":140
}
Example
const balance = await SDK.icon.methods.getRegisteredTokensCount()

tokenLimitStatus(_net, _coinName)

Parameters
Parameter (?) Type Description
_net string Network string identifier.
_coinName string Name of coin to check
Returns
{
  "jsonrpc":"2.0",
  "result": "0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.tokenLimitStatus("0x2.icon", "btp-0x2.icon-ICX")

blackListedUsersCount(_net)

Parameters
Parameter (?) Type Description
_net string Network string identifier.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.blackListedUsersCount("0x2.icon")

getTransaction(_sn)

Parameters
Parameter (?) Type Description
_Sn string Tx number.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x0",
  "id":140
}
Example
const balance = await SDK.icon.methods.getTransaction("0x1")

isRestrictionEnabled()

Parameters

** NO PARAMS **

Returns
{
  "jsonrpc":"2.0",
  "result": "0x1",
  "id":140
}
Example
const balance = await SDK.icon.methods.isRestrictionEnabled()

coinId(_coinName)

Parameters
Parameter (?) Type Description
_coinName string Name of coin.
Returns
{
  "jsonrpc":"2.0",
  "result": "cx55b835590d43af7bf6f5be3c3d50982264d24e5d",
  "id":140
}
Example
const balance = await SDK.icon.methods.coinId("btp-0x2.icon-bnUSD")

transferNativeCoin(targetAddress, targetChain, from, pk, amount, stepLimit)

Parameters
Parameter (?) Type Description
_targetAddress string Wallet address of receiver.
_targetChain string Receiver chain. Currently only "bsc" supported.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
amount Number Amount of native coin to transfer.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x9967f139261eecf348bb6ff1f2c7deb6e620d39b1536c6425d87d2e8a885fac0",
  "id":140
}
Example
const balance = await SDK.icon.methods.transferNativeCoin("0x0123..", "bsc", "hx0123..", "1234...", "50")

transferNativeToken(tokenName, amount, targetAddress, targetChain, tokenContract, from, pk, stepLimit)

Parameter (?) Type Description
tokenName string Name of token to transfer.
amount Decimal number as string Amount of token to transfer.
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "bsc" supported.
tokenContract string Contract for the token to transfer.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0xa081c958daeaddcb43e64bd1490b4e3b5432614c9ded3f0f51a199cc18e139db",
  "id":140
}
Example
const balance = await SDK.icon.methods.transferNativeCoin("btp-0x2.icon-bnUSD", "50", "0x0123..", "bsc", "cxcadcaf77d8e46089fd3d98fcf71eabee1700f148", "hx0123..", "1234...")

transferWrappedToken(tokenName, amount, targetAddress, targetChain, tokenContract, from, pk, stepLimit)

Parameter (?) Type Description
tokenName string Name of token to transfer.
amount Decimal number as string Amount of token to transfer.
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "bsc" supported.
tokenContract string Contract for the token to transfer.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x901f1ed955ea3d3b489e832e865fdf96aed722847ecac9b088ea81ca89ba3452",
  "id":140
}
Example
const balance = await SDK.icon.methods.transferWrappedCoin("btp-0x61.bsc-BNB", "0.1", "0x0123..", "bsc", "cx55b835590d43af7bf6f5be3c3d50982264d24e5d", "hx0123..", "1234...")

transferToBTSContract(_value, tokenContract, from, pk, stepLimit)

Parameter (?) Type Description
_value Decimal number as string Amount to transfer.
tokenContract string Contract for the token to transfer.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
 "result": "0xd04747f9bc316edc0ec09536457d8a0c0e2647626f98df324667381ac3c8a4a5",
  "id":140
}
Example
const balance = await SDK.icon.methods.transferToBTSContract("100", "cxcadcaf77d8e46089fd3d98fcf71eabee1700f148", "hx0123..", "1234...")

transfer(_coinName, _value, _to, from, pk, stepLimit)

Parameter (?) Type Description
_coinName string Name of Token to transfer.
_value Decimal number as string Amount to transfer.
_to string BTP formatted address of receiver.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
 "result": "0xd78159eb5224e70c12d9a1a520f609d43f696b2abb079cf50decd47cb61a4dfd",
  "id":140
}
Example
const balance = await SDK.icon.methods.transfer("btp-0x2.icon-bnUSD", "50", "btp://0x61.bsc/0x01234..", "hx0123..", "1234...")

transferBatch(_coinNames, _values, _to, from, pk, stepLimit)

Parameter (?) Type Description
_coinNames string[] Array of Names of Tokens to transfer.
_value Array<Decimal number as string> Array of Amounts to transfer.
_to string BTP formatted address of receiver.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
 "result": "0x3147aba0b2113cc842a1f33beceb2ef3347636325059fe1eca6e6480f80a7222",
  "id":140
}
Example
const balance = await SDK.icon.methods.transferBatch(["btp-0x2.icon-bnUSD", "btp-0c61.bsc-BNB"], ["50", "0.1"], "btp://0x61.bsc/0x01234..", "hx0123..", "1234...")

approveBTSContract(amount, tokenContract, from, pk, stepLimit)

Parameter (?) Type Description
amount Decimal number as string Amount of token to transfer.
tokenContract string Contract for the token to transfer.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
 "result": "0x6a41155cc1d26ee9127f88d84255a7950883a967b892703f4402dc60aa2f751d",
  "id":140
}
Example
const balance = await SDK.icon.methods.approveBTSContract("0.1", "cx55b835590d43af7bf6f5be3c3d50982264d24e5d", "hx0123..", "1234...")

reclaim(_coinName, _value, from, pk, stepLimit)

Parameter (?) Type Description
_coinName string Name of Token to transfer.
_value Decimal number as string Amount of re-claiming tokens.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x3597537df11701fd8e544ef9e30e611c6f833d11668ab3ce6ab499ff2264e756",
  "id":140
}
Example
const balance = await SDK.icon.methods.reclaim("btp-0x61.bsc-BNB", "0.1", "0x0123..", "hx0123..", "1234...")

addOwner(_addr, from, pk, stepLimit)

Parameter (?) Type Description
_addr string Wallet to add as owner of contract.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x585166881ee05963b3cc1f98660364e179b96d27a260a78e2434da50a44f1030",
  "id":140
}
Example
const balance = await SDK.icon.methods.addOwner("hx123..", "hx0123..", "1234...")

removeOwner(_addr, from, pk, stepLimit)

Parameter (?) Type Description
_addr string Wallet to remove as owner of contract.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x713c0d06f8a6ffe7ec293a9b496fca0d89f4a6c48b8fd24a9024cad268780144",
  "id":140
}
Example
const balance = await SDK.icon.methods.removeOwner("hx123..", "hx0123..", "1234...")

register(_name, _symbol, _decimals, _feeNumerator, _fixedFee, from, pk, _addr, stepLimit)

Parameter (?) Type Description
_name string Name of token to register.
_symbol string Symbol name of wrapped coin.
_decimals string N/A
_feeNumerator string N/A
_fixedFee string N/A
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_addr ? string N/A
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x6f11f9cbb172d7c0a665cddce6ba6aee0c4286629e6c1457a1398a7f981f1c9b",
  "id":140
}
Example
const balance = await SDK.icon.methods.register("btp-0x61.bsc-WBNB", "BNB", "0x12", "0x0", "0x2aa1efb94e000", "hx0123..", "1234...")

setFeeRatio(_name, _feeNumerator, _fixedFee, from, pk, stepLimit)

Parameter (?) Type Description
_name string Name of token to register.
_feeNumerator string N/A
_fixedFee string N/A
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x192e2a78456c4d32f01599d97987b7bddfe2e26c6ee0c0329e8bf7dcf8d37829",
  "id":140
}
Example
const balance = await SDK.icon.methods.setFeeRatio("btp-0x61.bsc-WBNB", "0x0", "0x2aa1efb94e000", "hx0123..", "1234...")

removeBlacklistAddress(_net, _addresses, from, pk, stepLimit)

Parameter (?) Type Description
_net string Chain network string identifier (btp formatted).
_addresses string[] Array of addresses.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x924f4f3922d754cfca094301f226154bd432c58c5ebfe8a91dff866aba414769",
  "id":140
}
Example
const balance = await SDK.icon.methods.removeBlacklistAddress("0x61.bsc", ["hx0123.."], "hx0123..", "1234...")

setTokenLimit(_coinNames, _tokenLimits, from, pk, stepLimit)

Parameter (?) Type Description
_coinNames string[] Array of coin names.
_tokenLimits string[] Array of token limits.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x943e41fb5079f4f67d13344367564b2351cb1b4606b370f48533fa1fe33220a0",
  "id":140
}
Example
const balance = await SDK.icon.methods.setTokenLimit(["btp-0x61.bsc-WBNB"], ["0x0"], "hx0123..", "1234...")

addBlacklistAddress(_net, _addresses, from, pk, stepLimit)

Parameter (?) Type Description
_net string Chain network string identifier (btp formatted).
_addresses string[] Array of addresses.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0xe7519f7867942e8d7b677baecf45b53c23d18ceed26232dbb86ea2065009e410",
  "id":140
}
Example
const balance = await SDK.icon.methods.addBlacklistAddress("0x61.bsc", ["0x0123.."], "hx0123..", "1234...")

addRestriction(from, pk, stepLimit)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0x00aec9ffc574ae2d1795f98375d4ca2609e586b47dac45d1ff022ad24e880187",
  "id":140
}
Example
const balance = await SDK.icon.methods.addRestriction("hx0123..", "1234...")

disableRestrictions(from, pk, stepLimit)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
stepLimit ? Decimal number as string Max 'steps', this determines the max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "result": "0xc2d08035d466fa14a8919f7b6c37b368d549693cd822ca9ffa7fb97ae9ef7264",
  "id":140
}
Example
const balance = await SDK.icon.methods.disableRestrictions("hx0123..", "1234...")

IconBridge.icon.web

iconBridge.icon.web offers the unsigned raw JSON RPC data of the selected method of the ICON Bridge. This option is intended to be used with a third party wallet (ICONex, Hana) to sign the required transaction object without your program having any access to the users private key.

The methods under this scope are the following:

  • .transferNativeCoin(targetAddress, targetChain, from, amount, stepLimit?)
  • .transferToBTSContract(_value, tokenContract, from, stepLimit?)
  • .transfer(_coinName, _value, _to, from, stepLimit?)
  • .transferBatch(_coinNames, _values, _to, from, stepLimit?)
  • .approveBTSContract(amount, tokenContract, from, stepLimit?)
  • .reclaim(_coinName, _value, from, stepLimit?)
  • .addOwner(_addr, from, stepLimit?)
  • .removeOwner(_addr, from, stepLimit?)
  • .register(_name, _symbol, _decimals, _feeNumerator, _fixedFee, from, _addr, stepLimit?)
  • .setFeeRatio(_name, _feeNumerator, _fixedFee, from, stepLimit?)
  • .removeBlacklistAddress(_net, _addresses, from, stepLimit?)
  • .setTokenLimit(_coinNames, _tokenLimits, from, stepLimit?)
  • .addBlacklistAddress(_net, _addresses, from, stepLimit?)
  • .addRestriction(from, stepLimit?)
  • .disableRestrictions(from, stepLimit?)

IconBridge.bsc

Methods for interacting with the ICON Bridge originating from the Binance Smart Chain.

IconBridge.bsc.methods

iconBridge.bsc.methods offers all the readonly and signed methods available on the ICON Bridge to be called directly with a valid set of params. The SDK will internally make the appropiate http/https request, handle the response and return the result in an asynchronous way.

balanceOf(_owner, _coinName)

Parameter (?) Type Description
_owner address Wallet address to check.
_coinName string Name of token to check.
Returns
{
  "0":"10000000000000000000",
  "1":"0",
  "2":"0",
  "3":"12774500000000000000000",
  "__length__":4,
  "_usableBalance":"10000000000000000000",
  "_lockedBalance":"0",
  "_refundableBalance":"0",
  "_userBalance":"12774500000000000000000"
}
Example
const balance = await SDK.bsc.methods.balanceOf("0x0123..", "btp-0x2.icon-bnUSD")

balanceOfBatch(_owner, _coinNames)

Parameter (?) Type Description
_owner address Wallet address to check.
_coinNames string[] Array of names of tokens to check.
Returns
{
  "0":["10000000000000000000"],
  "1":["0"],
  "2":["0"],
  "3":["12774500000000000000000"],
  "__length__":4,
  "_usableBalances":["10000000000000000000"],
  "_lockedBalances":["0"],
  "_refundableBalances":["0"],
  "_userBalances":["12774500000000000000000"]
}
Example
const balance = await SDK.bsc.methods.balanceOfBatch("0x0123..", ["btp-0x2.icon-bnUSD"])

coinId(_coinName)

Parameter (?) Type Description
_coinName string Name of token to check.
Returns
{
  "0":"0x7d8c52A23FD7e3ca1342797baE7caF6d7b8036BA",
  "__length__":1,
}
Example
const balance = await SDK.bsc.methods.coinId("btp-0x2.icon-ICX")

coinNames()

** NO PARAMS **

Returns
{
  "0":[
    "btp-0x61.bsc-BNB",
    "btp-0x61.bsc-BUSD",
    "btp-0x61.bsc-USDT",
    "btp-0x61.bsc-USDC",
    "btp-0x61.bsc-BTCB",
    "btp-0x61.bsc-ETH",
    "btp-0x2.icon-ICX",
    "btp-0x2.icon-sICX",
    "btp-0x2.icon-bnUSD",
    "btp-0x228.snow-ICZ"
  ],
  "__length__":1,
  "_names":[
    "btp-0x61.bsc-BNB",
    "btp-0x61.bsc-BUSD",
    "btp-0x61.bsc-USDT",
    "btp-0x61.bsc-USDC",
    "btp-0x61.bsc-BTCB",
    "btp-0x61.bsc-ETH",
    "btp-0x2.icon-ICX",
    "btp-0x2.icon-sICX",
    "btp-0x2.icon-bnUSD",
    "btp-0x228.snow-ICZ"
  ]
}
Example
const balance = await SDK.bsc.methods.coinNames()

feeRatio(coinName)

Parameter (?) Type Description
_coinName string Name of token to check.
Returns
{
  "0":"0",
  "1":"4300000000000000000",
  "__length__":2,
  "_feeNumerator":"0",
  "_fixedFee":"4300000000000000000"
}
Example
const balance = await SDK.bsc.methods.feeRatio("btp-0x2.icon-ICX")

getAccumulatedFees()

** NO PARAMS **

Returns
{
  "0":[
    ["btp-0x61.bsc-BNB","0"],
    ["btp-0x61.bsc-BUSD","0"],
    ["btp-0x61.bsc-USDT","0"],
    ["btp-0x61.bsc-USDC","0"],
    ["btp-0x61.bsc-BTCB","0"],
    ["btp-0x61.bsc-ETH","0"],
    ["btp-0x2.icon-ICX","0"],
    ["btp-0x2.icon-sICX","0"],
    ["btp-0x2.icon-bnUSD","0"],
    ["btp-0x228.snow-ICZ","0"]
  ],
  "__length__":1,
  "_accumulatedFees":[
    ["btp-0x61.bsc-BNB","0"],
    ["btp-0x61.bsc-BUSD","0"],
    ["btp-0x61.bsc-USDT","0"],
    ["btp-0x61.bsc-USDC","0"],
    ["btp-0x61.bsc-BTCB","0"],
    ["btp-0x61.bsc-ETH","0"],
    ["btp-0x2.icon-ICX","0"],
    ["btp-0x2.icon-sICX","0"],
    ["btp-0x2.icon-bnUSD","0"],
    ["btp-0x228.snow-ICZ","0"]
  ]
}
Example
const balance = await SDK.bsc.methods.getAccumulatedFees()

getNativeCoinName()

** NO PARAMS **

Returns
{
  "0":"btp-0x61.bsc-BNB",
  "__length__":1
}
Example
const balance = await SDK.bsc.methods.getNativeCoinName()

getOwners()

** NO PARAMS **

Returns
{
  "0":["0xD5F24A22A9E4029dEeCbF4dd38Ab6BE4657Fc5B7"],
  "__length__":1
}
Example
const balance = await SDK.bsc.methods.getOwners()

isOwner(_owner)

Parameter (?) Type Description
_owner address Wallet address to check.
Returns
{
  "0":true,
  "__length__":1
}
Example
const balance = await SDK.bsc.methods.isOwner("0xd5f24a22a9e4029deecbf4dd38ab6be4657fc5b7")

isValidCoin(_coinName)

Parameter (?) Type Description
_coinName string Name of token to check.
Returns
{
  "0":true,
  "__length__":1,
  "_valid": true
}
Example
const balance = await SDK.bsc.methods.isValidCoin("btp-0x2.icon-ICX")

transfer(targetAddress, targetChain, from, pk, _value, _coinName, gas)

Parameter (?) Type Description
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "icon" supported.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_value Decimal number as string Amount of token to transfer.
_coinName string Name of token to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x27fd4c75591e9ba64e5ddc32129012d188fc56926d17bc206f137965f6035f04"
}
Example
const balance = await SDK.bsc.methods.transfer("hx123..", "icon", "0x0123..", "1234..", "50", "btp-0x2.icon-ICX")

approveTransfer(from, pk, amount, tokenContractAddress, tokenContractAbi, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
amount Decimal number as string Amount of token to transfer.
tokenContract string Contract for the token to transfer.
tokenContractAbi ? Array<Object> Contract abi for the token to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0xfa1233a7154e5071710e8a5cc3e9b61de2d6231c7d5bcc95782dbfb03e5ffb2f"
}
Example
const balance = await SDK.bsc.methods.approveTransfer("0x0123..", "12345..", "50", "0x7d8c52A23FD7e3ca1342797baE7caF6d7b8036BA")

approveAndTransfer(targetAddress, targetChain, from, pk, _coinName, _value, tokenContractAddress, tokenContractAbi, gas)

Parameter (?) Type Description
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "icon" supported.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_value Decimal number as string Amount of token to transfer.
_coinName string Name of token to transfer.
tokenContract string Contract for the token to transfer.
tokenContractAbi ? Array<Object> Contract abi for the token to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x8c5922efc4560fdf23d5ad3f1d7c275f5638fe09e60a85ebfb91f1cefbd2104f"
}
Example
const balance = await SDK.bsc.methods.approveAndTransfer("hx0123..", "icon", "0x0123..", "12345..", "50", "btp-0x2.icon-ICX",  "0x7d8c52A23FD7e3ca1342797baE7caF6d7b8036BA")

transferBatch(targetAddress, targetChain, from, pk, _coinNames, _values, gas)

Parameter (?) Type Description
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "icon" supported.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_values Array<Decimal number as string> Amounts of tokens to transfer.
_coinNames Array<string> Names of tokens to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x4b8886606539ed91ef90900a8a32605063d0c881b366132aded9115d021c2a91"
}
Example
const balance = await SDK.bsc.methods.transferBatch("hx0123..", "icon", "0x0123..", "12345..", ["50"], ["btp-0x2.icon-ICX"])

transferNativeCoin(targetAddress, targetChain, from, pk, amount, gas)

Parameter (?) Type Description
targetAddress string Wallet address of receiver.
targetChain string Receiver chain. Currently only "icon" supported.
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
amount Decimal number as string Amount of native coin to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x64cbdc785c74a9bbb4217ba8860fb796910d89462be75f41f31e63b7a0c59c25"
}
Example
const balance = await SDK.bsc.methods.transferNativeCoin("hx0123..", "icon", "0x0123..", "12345..", "0.01")

addOwner(from, pk, _owner, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_owner Address Address to add as owner of contract.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x0008cb96d74af6d180b5a9ebeff95ccf6d4a2ef91e44a00c8a8eb7e353b2a327"
}
Example
const balance = await SDK.bsc.methods.addOwner("0x0123..", "12345..", "0x2345..")

reclaim(from, pk, _coinName, _value, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_coinName string Name of token to transfer.
_value Decimal number as string Amount of token to transfer.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x2af680892738d5551c8411043551e92ab1447b7d07cc39234e7c948ca31f3e1a"
}
Example
const balance = await SDK.bsc.methods.reclaim("0x0123..", "12345..", "btp-0x2.icon-ICX", "10")

register(from, pk, _name, _symbol, _feeNumerator, _fixedFee, _addr, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_name string Name of token to register.
_symbol string Symbol of token to register.
_decimals Number as hex string Token decimals.
_feeNumerator Number as hex string Token fee numerator.
_fixedFee Number as hex string Token fixed fee.
_addr address Token contract address.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x8bb2a4d24f0d17207d00d7c6b8b9b9a366a0809bd7ba6011c7f40cbf334bf53f"
}
Example
const balance = await SDK.bsc.methods.register("btp-0x61.bsc-WBNB", "BNB", "0x12", "0x0", "0x2aa1efb94e000", "0x7d8c52A23FD7e3ca1342797baE7caF6d7b8036BA")

removeOwner(from, pk, _owner, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_owner Address Address to remove as owner of contract.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0xa683bec14f0a9e962308d4753551ac0c979f963a4d00ce6bfda3e996f72aa245"
}
Example
const balance = await SDK.bsc.methods.removeOwner("0x0123..", "12345..", "0x2345..")

setFeeRatio(from, pk, _name, _feeNumerator, _fixedFee, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_name string Name of token to register.
_feeNumerator Number as hex string Token fee numerator.
_fixedFee Number as hex string Token fixed fee.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0x86ab3e862e2593d8ef6cc4e21bd139358ecd9565ef81e4e2ac154c91f238d4be"
}
Example
const balance = await SDK.bsc.methods.setFeeRatio("btp-0x2.icon-ICX", 100, 10, 10000000)

updateBTSPeriphery(from, pk, _btsPeriphery, gas)

Parameter (?) Type Description
from address Wallet address of origin.
pk string Private key of Wallet address of origin.
_name string Name of token to register.
_btsPeriphery address address of btsPeriphery.
gas ? Decimal Max fee to pay.
Returns
{
  "jsonrpc":"2.0",
  "id":49,
  "result":"0xdf45876b62bdd0210f7a4938c68eb449a96af02e6407caf5391e74158453035d"
}
Example
const balance = await SDK.bsc.methods.updateBTSPeriphery("0x1234..", "1234..", "0x234..")

IconBridge.bsc.web

iconBridge.bsc.web offers the unsigned raw JSON RPC data of the selected method of the ICON Bridge. This option is intended to be used with a third party wallet (Metamask) to sign the required transaction object without your program having any access to the users private key.

The methods under this scope are the following:

  • .transfer(targetAddress, targetChain, from, _value, _coinName, gas?)
  • .transferBatch(targetAddress, targetChain, from, _values, _coinNames, gas?)
  • .transferBatch(targetAddress, targetChain, from, _values, _coinNames, gas?)
  • .transferNativeCoin(targetAddress, targetChain, from, amount, gas?)
  • .approveTransfer(from, amount, tokenContractAddress, tokenContractAbi?, gas?)
  • .addOwner(from, _owner, gas?)
  • .reclaim(from, _coinName, _value, gas?)
  • .register(from, _name, _symbol, _decimals, _feeNumerator, _fixedFee, _addr, gas?)
  • .removeOwner(from, _owner, gas?)
  • .setFeeRatio(from, _name, _feeNumerator, _fixedFee, gas?)
  • .updateBTSPeriphery(from, _btsPeriphery, gas?)

IconBridge.sdkUtils

Miscellaneous utilities for the IconBridge SDK.

  • networks
  • contracts
  • getBTPAddress
  • genericAbi

Troubleshooting

When calling methods on the BSC chain I get an error with Invalid JSON RPC response: {"size": 0, "timeout": 0}

Error example:

Result:
{
  error: 'Error running addOwner(). Params:\n' + 'from: {ADDRESS}\n' + 'pk: {PRIVATE_KEY}\n' + '_owner: {ADDRESS}\n' + '.\n' + 'Invalid JSON RPC response: {"size":0,"timeout":0}'
}

The SDK by default uses the following RPC endpoints for testnet and mainnet on BSC chains:

If you are getting this error the RPC endpoint is most likely down, you can change the endpoint you want to use like in the following example:

const SDK = new IconBridgeSDK({
  useMainnet: false,
  bscProvider: { hostname: "https://data-seed-prebsc-2-s1.binance.org:8545" }
});

Making a token transfer originating from BSC chain returns the following error: Returned error: insufficient funds for gas * price + value

Error example:

Result:
{
  error: 'Error running approveAndTransfer(). Params:\n' + 'targetAddress: {ADDRESS} \n' + 'targetChain: icon\n' + 'from: {ADDRESS}\n' + 'pk: {PRIVATE_KEY}\n' + '_value: 0.05\n' + '.\n' + 'Returned error: insufficient funds for gas * price + value'
}

This error occurs when you don't have enough balance (native coin, in this case BNB) to pay for the transaction fee.

Making a token transfer originating from BSC chain returns one of the following errors: Returned error: replacement transaction underpriced or Returned error: already known

Error example:

{
 error: 'Error running addOwner(). Params:\n' + 'from: {ADDRES}\n' + 'pk: {PRIVATE_KEY}\n' + '_owner: {ADDRESS}\n' + '.\n' + '{"jsonrpc":"2.0","id":77,"error":{"code":-32000,"message":"already known"}}'
}

Currently the SDK doesnt support sending multiple concurrent transactions to be processed on the same block, because of this if you send for example 2 transactions one after the other without waiting around 5 to 10 seconds depending on the types of transaction that you are sending the chain will reply back thinking you are either sending the same tx twice or you are trying to replace an already existing tx in the mempool.

To fix this currently the only solution is to wait at least 5 to 10 seconds between sending each transaction.

After installing the SDK the following error occurs when running the app that uses the SDK: error - TypeError: Cannot set property Request of #<Object> which has only a getter at eval

This error occurs if you are using a Node version older than v18. Check your node version with node -v. You can use nvm to manage node versions on different projects on your computer.

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An sdk written in JS for the ICON Bridge

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