Genesis upgrade

Genesis is a major update to the BitcoinSV mining client which is used by the majority of miners on the BitcoinSV network.

The upgrade is seen as a return to the original Bitcoin protocol, and includes the removal of all limit based consensus rules, and their replacement with miner configurable settings that give node operators the autonomy needed to set their own limits as they determine are practical.

The full specification is available here. A short summary of the specification is given here.

Genesis is scheduled to go into effect on or around the 4th of February 2019.

See also:

https://bitcoinsv.io/2020/01/15/changes-for-the-genesis-upgrade/

https://www.prnewswire.com/news-releases/bitcoin-svs-genesis-hard-fork-300989579.html

The four following areas of the protocol and specification contain the changes implemented by the Genesis upgrade

Block Consensus Rules

       Block Size - The size of a block in bytes of the serialized form of the block including the block header and all of the transactions confirmed by the block.

       Number of CheckSig Operations per MB of Block Space

Transaction Consensus Rules

       Maximum Transaction Size - The size of a transaction is the size in bytes of the serialized form of the transaction. The maximum size of a transaction is 1GB (1,000,000,000 bytes). This limitation is expected to be lifted in the future.

       Maximum Number of CheckSig Operations per Transaction

       nLockTime

       nSequence

Script Language Rules

P2SH sunset - The P2SH capability is being removed by the Genesis upgrade and the presence of a p2sh script template in an output will invalidate a transction.

Standard Local Policies

Maximum Acceptable Transaction Size Policy Transaction Evaluation Timeout