diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/policy/policy.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp index 9e433584e7..fced397e51 100644 --- a/src/policy/policy.cpp +++ b/src/policy/policy.cpp @@ -22,7 +22,7 @@ CAmount GetDustThreshold(const CTxOut& txout, const CFeeRate& dustRelayFeeIn) // so dust is a spendable txout less than // 182*dustRelayFee/1000 (in satoshis). // 546 satoshis at the default rate of 3000 sat/kvB. - // A typical spendable segwit txout is 31 bytes big, and will + // A typical spendable segwit P2WPKH txout is 31 bytes big, and will // need a CTxIn of at least 67 bytes to spend: // so dust is a spendable txout less than // 98*dustRelayFee/1000 (in satoshis). @@ -34,6 +34,11 @@ CAmount GetDustThreshold(const CTxOut& txout, const CFeeRate& dustRelayFeeIn) int witnessversion = 0; std::vector<unsigned char> witnessprogram; + // Note this computation is for spending a Segwit v0 P2WPKH output (a 33 bytes + // public key + an ECDSA signature). For Segwit v1 Taproot outputs the minimum + // satisfaction is lower (a single BIP340 signature) but this computation was + // kept to not further reduce the dust level. + // See discussion in https://github.com/bitcoin/bitcoin/pull/22779 for details. if (txout.scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram)) { // sum the sizes of the parts of a transaction input // with 75% segwit discount applied to the script size. |