diff options
| -rw-r--r-- | bip-0078.mediawiki | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/bip-0078.mediawiki b/bip-0078.mediawiki index 3b9820a..6a00858 100644 --- a/bip-0078.mediawiki +++ b/bip-0078.mediawiki @@ -147,6 +147,8 @@ This fee contribution can't be used to pay for anything else than additional inp * <code>minfeerate=</code>, a decimal in satoshi per vbyte that the sender can use to constraint the receiver to not drop the minimum fee rate too much. +* <code>disableoutputsubstitution=</code>, a boolean indicating if the sender forbids the receiver to modify his own output, see [[#output-substitution|payment output substitution]]. (default to <code>false</code>) + ===Receiver's well known errors=== If for some reason the receiver is unable to create a payjoin proposal, it will reply with a HTTP code different than 200. @@ -271,7 +273,7 @@ The sender should check the payjoin proposal before signing it to prevent a mali The sender must be careful to only sign the inputs that were present in the original PSBT and nothing else. Note: -* The sender must allow the receiver to add/remove or modify his own outputs +* The sender must allow the receiver to add/remove or modify his own outputs (Except is explicitely disabled via the optional parameter <code>disableoutputsubstitution=</code>) * The sender should allow the receiver to not add any input. Useful for the receiver to change the paymout output scriptPubKey type. * If no input have been added, the sender's wallet implementation should accept the payjoin proposal, but not mark the transaction as an actual payjoin in the user interface. @@ -421,7 +423,8 @@ public async Task<PSBT> RequestPayjoin( var ourOutputs = new Queue<(TxOut OriginalTxOut, PSBTOutput SignedPSBTOutput)>(); for (int i = 0; i < originalGlobalTx.Outputs.Count; i++) { - if (signedPSBT.Outputs[i].ScriptPubKey != bip21.Address.ScriptPubKey) + if (optionalParameters.DisableOutputSubstitution || + signedPSBT.Outputs[i].ScriptPubKey != bip21.Address.ScriptPubKey) ourOutputs.Enqueue((originalGlobalTx.Outputs[i], signedPSBT.Outputs[i])); } endpoint = ApplyOptionalParameters(endpoint, optionalParameters); |