Block Version History

Block Version History

| Version Number | Proposed In | Released | Summary |
|||Aug 2017| Bitcoin Cash hard fork.|
|4|BIP-0065| Nov 2015
Bitcoin Core 0.11.2| Added support for OP_CHECKLOCKTIMEVERIFY opcode.|
|3|BIP-0066|Jul 2015
Bitcoin Core 0.10.0| Added enforcement of DER encoding of all ECDSA signatures in new blocks.|
|2|BIP-0034|Sep 2012
Bitcoin Core 0.7.0| Added the block height within the block coinbase.|
|1||Jan 2009|The format used in the genesis block.|