BIP 0011

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This page describes a BIP (Bitcoin Improvement Proposal).
Please see BIP 2 for more information about BIPs and creating them. Please do not just create a wiki page.

The full text of this BIP can be read here.


BIP 0011
Long titleM-of-N Standard Transactions
TypeStandards Track
Author(s)Gavin Andresen


PropositionOctober 18, 2011
BIPN allocationOctober 18, 2011
FinalizationDecember 13, 2011
AcceptanceDecember 13, 2011
BIP 0011 was the first standard Bitcoin Improvement Proposal, authored by Gavin Andresen after being described by ByteCoin on BitcoinTalk two weeks earlier.[1] ByteCoin had referenced an earlier thread by Mike Caldwell, which proposed modifying OP_CHECKSIG for multisignature transactions.[2]


  1. BitcoinTalk thread 46538. OP_EVAL proposal 2011-10-02.
  2. BitcoinTalk thread 45211. Proposal to modify OP_CHECKSIG 2011-09-22.