Consensus versions

2022-03-31T12:42:04Z

Contrarian: Changed 0.3.6 to correctly reflect it being a hardfork. The previous behavior was to have the opcode switch statement default to return false for unknown opcodes.

{| class="wikitable"
! TENTATIVE semantic version number || Software release || Change type || BIP(s)
|-
| 0.1.0 || wxBitcoin 0.1.0 || original
|-
| 0.2.0 || wxBitcoin 0.1.6 || softfork || added nLockTime enforcement<ref>[https://bitcoin.stackexchange.com/a/99104/21052 Was the addition of nLockTime timelocks a hard fork?]<br>Bitcoin StackExchange<br>Retrieved 2020-09-21</ref>
|-
| 0.2.1 || wxBitcoin 0.3.1 || softfork || mostly-redundant 1 MB block size limit
|-
| 0.2.2 || wxBitcoin 0.3.5 || softfork || fixes CVE-2010-5141
|-
| 0.2.3 || wxBitcoin 0.3.6 || hardfork || OP_NOPs added<ref>https://github.com/bitcoin/bitcoin/blob/ec82517c8919f9cb7194511dc322a2575745e39e/script.cpp#L798</ref>
|-
| 0.3.0 || wxBitcoin 0.3.7 || hardfork || scriptSig + scriptPubKey evaluations separated <ref>https://bitcoin.stackexchange.com/questions/111673/was-bitcoin-0-3-7-actually-hard-forking</ref>
|-
| 0.3.1 || wxBitcoin 0.3.10 || softfork || fixes CVE-2010-5137 and CVE-2010-5139
|-
| 0.3.2 || wxBitcoin 0.3.12 || softfork || fixes CVE-2010-5138
|-
| 0.3.3 || wxBitcoin 0.3.13 || softfork || Treat multisig with more than 20 keys invalid after block 84000 <ref>https://github.com/bitcoin/bitcoin/commit/a790fa46f40d751307f86c37a709eb119768ce5b#diff-27496895958ca30c47bbb873299a2ad7a7ea1003a9faa96b317250e3b7aa1fef</ref>
|-
| 1.0.0 || Bitcoin Core 0.6.0 || softfork || fixes CVE-2012-1909
|-
| 1.1.0 || Bitcoin Core 0.6.0 || softfork || BIP16
|-
| 1.1.1 || Bitcoin Core 0.7.0 || softfork || BIP34
|-
| 1.1.2 || Bitcoin Core 0.8.1 || softfork || fixes CVE-2013-3220 by adding txid change limit
|-
| 2.0.0 || Bitcoin Core 0.8.1 || hardfork || removed BDB lock limit & txid change limit
|-
| 2.0.1 || Bitcoin Core 0.9.2 || softfork || BIP42
|-
| 2.1.0 || Bitcoin Core 0.10.0 || softfork || BIP66
|-
| 2.2.0 || Bitcoin Core 0.10.4 || softfork || BIP65
|-
| 2.3.0 || Bitcoin Core 0.12.1 || softfork || BIP68, BIP112, BIP113
|-
| 2.4.0 || Bitcoin Core 0.13.1 || softfork || BIP141, BIP143, BIP147
|-
| 2.4.1 || Bitcoin Core UASF 0.14.0 || softfork || BIP148
|-
| 2.4.2 || Bitcoin Core 0.16.3 || softfork || fixes CVE-2018-17144
|-
| 2.5.0 || Bitcoin Core-based Taproot Client 0.21.0 || softfork || BIP341, BIP342, BIP343
|}

== See also ==

* https://blog.bitmex.com/bitcoins-consensus-forks/

== References ==

Bitcoin Wiki - User contributions [en]

Consensus versions