diff options
Diffstat (limited to 'bip-tapscript.mediawiki')
| -rw-r--r-- | bip-tapscript.mediawiki | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/bip-tapscript.mediawiki b/bip-tapscript.mediawiki index af46afd..603990e 100644 --- a/bip-tapscript.mediawiki +++ b/bip-tapscript.mediawiki @@ -47,7 +47,7 @@ The rules below only apply when validating a transaction input for which all of * The transaction output is a '''segregated witness spend''' (i.e., either the scriptPubKey or BIP16 redeemScript is a witness program as defined in BIP141). * It is a '''taproot spend''' as defined in bip-taproot (i.e., the witness version is 1, the witness program is 32 bytes). * It is a '''script path spend''' as defined in bip-taproot (i.e., after removing the optional annex from the witness stack, two or more stack elements remain). -* The leaf version is ''0xc0'' (i.e. the first byte of the last witness element after removing the optional annex is ''0xc0'' or ''0xc1'')<ref>'''How is the ''0xc0'' constant chosen?''' Following the guidelines in bip-taproot, by choosing a value having the two top bits set, tapscript spends are identifiable even without access to the UTXO being spent.</ref>, marking it as a '''tapscript spend'''. +* The leaf version is ''0xc0'' (i.e. the first byte of the last witness element after removing the optional annex is ''0xc0'')<ref>'''How is the ''0xc0'' constant chosen?''' Following the guidelines in bip-taproot, by choosing a value having the two top bits set, tapscript spends are identifiable even without access to the UTXO being spent.</ref>, marking it as a '''tapscript spend'''. Validation of such inputs must be equivalent to performing the following steps in the specified order. # If the input is invalid due to BIP16, BIP141, or bip-taproot, fail. @@ -142,4 +142,3 @@ This rule limits worst-case validation costs in tapscript similar to the ''sigop ==Acknowledgements== This document is the result of many discussions and contains contributions by Jonas Nick, Anthony Towns, and others. - |