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Hello,
We have released Stacks version 2.2.0.0.1, available here: https://github.com/blockstack/stacks-blockchain/releases/tag/2.2.0.0.1.
**This is a required hard fork**
This hard fork addresses the issue discussed here: https://forum.stacks.org/t/a-bug-in-stacks-increase-call-is-impacting-stacking-rewards-this-cycle/14867/8
Which resulted in SIP-22: https://github.com/stacksgov/sips/blob/main/sips/sip-022/sip-022-emergency-pox-fix.md
Please note that this hard fork is the first of 2 that are planned in accordance with SIP-22.
The second hard fork will take effect 200 Bitcoin blocks prior to the start of reward cycle #59, which is Bitcoin block height 789751.
This release's chainstate directory is compatible with chainstate directories from 2.1.0.0.0.
Changelog:
## [2.2.0.0.1]
This is a **consensus-breaking** release to address a bug and DoS vector in pox-2's `stack-increase` function.
Additional context and rationale can be found in [SIP-022](https://github.com/stacksgov/sips/blob/main/sips/sip-022/sip-022-emergency-pox-fix.md).
This release is compatible with chainstate directories from 2.1.0.0.x.
Git commit hash: 225549ce72c03338afa57003d83ff325084efe69
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Best,
Jesse Wiley
Engineering Partner, Stacks Foundation
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