import ( "github.com/btcsuite/btcutil" "github.com/btcsuite/btcd/wire" ) // Create a new Bitcoin transaction tx := wire.NewMsgTx(wire.TxVersion) // Add inputs to the transaction txin := wire.NewTxIn(&wire.OutPoint{Hash: ...}, ...) tx.AddTxIn(txin) // Add outputs to the transaction txout := wire.NewTxOut(..., ...) tx.AddTxOut(txout) // Calculate the SHA256 hash of the transaction txHash := btcutil.TxSha(tx)
import ( "github.com/btcsuite/btcutil" "github.com/btcsuite/btcd/chaincfg/chainhash" ) // SHA256 hash of the desired Bitcoin transaction txHashStr := "..." txHash, err := chainhash.NewHashFromStr(txHashStr) if err != nil { // Handle error } // Verify the SHA256 hash of the transaction isValid := btcutil.IsValidSha256Hash(txHash)In this example, we import the necessary packages and create a SHA256 hash of a Bitcoin transaction using the `chainhash.NewHashFromStr()` function. We then verify the validity of the SHA256 hash using the `btcutil.IsValidSha256Hash()` function. Overall, the `github.com/btcsuite/btcutil` package library provides a range of useful helper functions for working with Bitcoin and other cryptocurrencies in Go.