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Diffstat (limited to 'bip-0141.mediawiki')
| -rw-r--r-- | bip-0141.mediawiki | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/bip-0141.mediawiki b/bip-0141.mediawiki index dd17eaa..f9881be 100644 --- a/bip-0141.mediawiki +++ b/bip-0141.mediawiki @@ -75,6 +75,8 @@ and the coinbase's input's witness must consist of a single 32-byte array for th If there are more than one scriptPubKey matching the pattern, the one with highest output index is assumed to be the commitment. +If all transactions in a block do not have witness data, the commitment is optional. + === Witness program === A scriptPubKey (or redeemScript as defined in BIP16/P2SH) that consists of a 1-byte push opcode (for 0 to 16) followed by a data push between 2 and 32 bytes gets a new special meaning. The value of the first push is called the "version byte". The following byte vector pushed is called the "witness program". |