Release 3.3.0.0.0: Stacks 3.3 Hard Fork

Hey Team! Stacks core developers have released Stacks Core version 3.3.0.0.0, which implements the 3.3 Stacks consensus rules.
This is a required hard fork upgrade scheduled to activate at Bitcoin block 923,222 (November 11th, 2025 around 1600 UTC)

  1. Upgrade to Stacks Core v3.3.0.0.0
    • Download the new release:
    https://github.com/stacks-network/stacks-core/releases/tag/3.3.0.0.0

  2. Update to signer v3.3.0.0.0.0
    • Download the new release:
    https://github.com/stacks-network/stacks-core/releases/tag/signer-3.3.0.0.0.0

Key Improvements:
• Implements the 3.3 Stacks consensus rules which activates at Bitcoin block 923,222. For more details see SIP-033.

Please Note:
• This is a required upgrade before bitcoin block 923,222 (If upgrade is performed after this block, a genesis sync will be required)
• Compatible with all existing 3.x.x.x.x chainstate directories
• No data migration needed!
• Docker images are published:
https://hub.docker.com/r/blockstack/stacks-core/tags?name=3.3.0.0.0
https://hub.docker.com/r/blockstack/stacks-signer/tags?name=3.3.0.0.0.0

• Announcement: https://groups.google.com/a/stacks.org/g/announce/c/lB2QLL9T29U

We would like to encourage everyone to subscribe to the release update mailing list.
Join by sending an email to: [email protected]

We’re here to support you as needed, please let us know if you have any questions. Thank you!

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