dcrpg: Use PoW hash from block result when avail.

This modifies the recently-added logic to include the proof of work hash
in the explorer block info to make use of the new PoWHash field of the
verbose block output when available.

db/dcrpg/pgblockchain.go

@@ -5829,7 +5829,9 @@ func (pgb *ChainDB) GetExplorerBlock(hash string) *exptypes.BlockInfo {
 		Subsidy:               pgb.BlockSubsidy(b.Height, b.Voters),
 	}
 
-	if pgb.IsDCP0011Active(b.Height) {
+	if data.PoWHash != "" {
+		block.PoWHash = data.PoWHash
+	} else if pgb.IsDCP0011Active(b.Height) {
 		blockChainHash, err := chainhash.NewHashFromStr(data.Hash)
 		if err != nil {
 			log.Errorf("error parsing hash for block %d (hash=%s): %v", data.Height, data.Hash, err)

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/decred/dcrd/chaincfg/v3 v3.2.0
 	github.com/decred/dcrd/database/v3 v3.0.1
 	github.com/decred/dcrd/dcrutil/v4 v4.0.1
-	github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.0.0
+	github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.1.0
 	github.com/decred/dcrd/rpcclient/v8 v8.0.0
 	github.com/decred/dcrd/txscript/v4 v4.1.0
 	github.com/decred/dcrd/wire v1.6.0

go.sum

@@ -48,8 +48,8 @@ github.com/decred/dcrd/dcrutil/v4 v4.0.1 h1:E+d2TNbpOj0f1L9RqkZkEm1QolFjajvkzxWC
 github.com/decred/dcrd/dcrutil/v4 v4.0.1/go.mod h1:7EXyHYj8FEqY+WzMuRkF0nh32ueLqhutZDoW4eQ+KRc=
 github.com/decred/dcrd/gcs/v4 v4.0.0 h1:bet+Ax1ZFUqn2M0g1uotm0b8F6BZ9MmblViyJ088E8k=
 github.com/decred/dcrd/gcs/v4 v4.0.0/go.mod h1:9z+EBagzpEdAumwS09vf/hiGaR8XhNmsBgaVq6u7/NI=
-github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.0.0 h1:4YUKsWKrKlkhVMYGRB6G0XI6QfwUnwEH18eoEbM1/+M=
-github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.0.0/go.mod h1:dDHO7ivrPAhZjFD3LoOJN/kdq5gi0sxie6zCsWHAiUo=
+github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.1.0 h1:kQFK7FMTmMDX9amyhh8IR0vwwI8dH0KCBm42C64bWVs=
+github.com/decred/dcrd/rpc/jsonrpc/types/v4 v4.1.0/go.mod h1:dDHO7ivrPAhZjFD3LoOJN/kdq5gi0sxie6zCsWHAiUo=
 github.com/decred/dcrd/rpcclient/v8 v8.0.0 h1:O4B5d+8e2OjbeFW+c1XcZNQzyp++04ArWhXgYrsURus=
 github.com/decred/dcrd/rpcclient/v8 v8.0.0/go.mod h1:gx4+DI5apuOEeLwPBJFlMoj3GFWq1I7/X8XCQmMTi8Q=
 github.com/decred/dcrd/txscript/v4 v4.1.0 h1:uEdcibIOl6BuWj3AqmXZ9xIK/qbo6lHY9aNk29FtkrU=