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input: use explicit CSV 1 script for to remote output

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We undo the prior hack here to make the final script more readable. The
difference is just 1 byte between the two.
This commit is contained in:
Olaoluwa Osuntokun 2023-05-24 20:57:20 -07:00
parent 0c74f894c4
commit 6ce7f5d29e
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GPG Key ID: 3BBD59E99B280306
1 changed files with 3 additions and 6 deletions
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9
input/script_utils.go
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@ -2231,7 +2231,9 @@ func NewRemoteCommitScriptTree(remoteKey *btcec.PublicKey,
builder := txscript.NewScriptBuilder()
builder.AddData(schnorr.SerializePubKey(remoteKey))
builder.AddOp(txscript.OP_CHECKSIG)
builder.AddOp(txscript.OP_1)
builder.AddOp(txscript.OP_CHECKSEQUENCEVERIFY)
builder.AddOp(txscript.OP_DROP)
remoteScript, err := builder.Script()
if err != nil {
@ -2269,12 +2271,7 @@ func NewRemoteCommitScriptTree(remoteKey *btcec.PublicKey,
// Our single tapleaf will use the following script:
//
// <remotepubkey> OP_CHECKSIG
// OP_CHECKSEQUENCEVERIFY
//
// The CSV clause is a bit subtle, but OP_CHECKSIG will return true if it
// succeeds, which then enforces our 1 CSV. The true will remain on the stack,
// causing the script to pass. If the CHECKSIG fails, then a 0 will remain on
// the stack.
// 1 OP_CHECKSEQUENCEVERIFY OP_DROP
func TaprootCommitScriptToRemote(remoteKey *btcec.PublicKey,
) (*btcec.PublicKey, error) {