SIP-044: Clarity 6, Staking and PoX Post-Conditions, and Removal of the Cost-Voting Contract

SP
10 Jul 2026, 5:51 pm UTC

Stackers, you're voting on SIP-044, a consensus upgrade for Stacks Epoch 4.0. It adds Clarity 6, which brings a multi-argument version of concat, the ability to decompress secp256k1 public keys, Ed25519 signature verification, and new functions for trustlessly verifying Bitcoin transactions on-chain. It also adds the staking and PoX allowances needed for the new PoX-5 staking model.


It also adds two operational pieces: transaction-level staking/PoX post-conditions, giving users a way to protect their STX from unexpected staking changes, and a "problematic transactions" mechanism that lets miners and signers agree to skip execution of a flagged transaction (while still collecting its fee) instead of stalling the sender's account. Separately, it disables the long-unused cost-voting contract, unexercised since Epoch 2.0.


This is a hard fork. Because it touches both liquid and stacked STX, it carries a dual threshold: at least 80 million stacked STX must vote, with 80% of stacked STX voting "yes," and separately 80% of liquid STX voting "yes." Voting is by STX dust transaction (all holders) or BTC dust transaction (solo stackers only), with voting power set by a snapshot at the block height voting opens.


Resources:


Dust Voting Options

If you are unable to vote using the Ballot platform because you use a different wallet or custody provider, you can vote by sending a dust amount of STX or BTC to the below addresses.


Vote via Dust (STX)

YES: SP000000000F5JQ6BAK9582TC1M6HRXABVZ

NO: SP00000000001Q6YBAK9582TC1M6KAW7AQP


Vote via Dust (BTC)

YES: SP000000000F5JQ6BAK9582TC1M6HRXABVZ

NO: 11111111111hbmNftsTSgeVBzDS7tk


Disclaimer: Only votes cast directly on Ballot appear in real time. Dust and BTC voting data are updated periodically and may not show immediately in the displayed results.

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Select one option
YES - IN FAVOR
NO - AGAINST
Voting Requirement: You must hold STX tokens to participate in this poll.

Poll Information

Voting SystemFirst-past-the-post
Start Date10 Jul 2026, 5:51 pm UTC
End Date20 Jul 2026, 10:51 pm UTC
Start Block957,455
End Block958,925
Current Block957,454

Poll ResultsNot started

Voting hasn’t started yet — live results will appear once the poll opens at block 957,455.
0Total Votes
0Voters
YES - IN FAVOR
0%(0)
NO - AGAINST
0%(0)
Voting System:
First Past The Post
Token: STX

Voting Requirements

Token RequiredSTX
Token Typeft
Snapshot Block8518714

Voting Activity

VoterChoiceVotesPowerLock Status
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Poll Information

Voting SystemFirst-past-the-post
Start Date10 Jul 2026, 5:51 pm UTC
End Date20 Jul 2026, 10:51 pm UTC
Start Block957,455
End Block958,925
Current Block957,454

Poll ResultsNot started

Voting hasn’t started yet — live results will appear once the poll opens at block 957,455.
0Total Votes
0Voters
YES - IN FAVOR
0%(0)
NO - AGAINST
0%(0)
Voting System:
First Past The Post
Token: STX

Voting Requirements

Token RequiredSTX
Token Typeft
Snapshot Block8518714