Clarity Working Group (WG) – Meeting Recap | Tue, 3 Mar 2026

Working Groups
1

Date: Tuesday, March 3, 2026, at 09:00 AM Eastern Time

Hosted by: Setzeus

Duration: ~45 mins

1. Agenda Overview

  • SIP-042 Discussion: At-Block Removal
  • SIP-040 Discussion: Improved Post Conditions (Non-Controversial)
  • SIP-039 Discussion: Clarity 5 Fixes & Technical Updates (Non-Controversial)
  • Clarinet Linter
  • Contract Identity Naming Conventions

2. Key Meeting Highlights

SIP-042 Discussion: at-block Removal

  • More controversial of the 3 SIPs.
  • Good summary of the 3 SIPs and their trade-offs in last Friday SIP call #164
  • Current Blockchain State:
    • Chain state size reached 1TB (BowTiedRadone’s data point) - major barrier for node operators
    • at-block forces all nodes to keep complete chain state data vs allowing pruned nodes
  • Proposal: Remove at-block Functionality
    • Known bugs in at-block function
    • Only 7-8 contracts actively use at-block
    • Is there any financial value users can’t recover? (raised by HeroG)
  • Trade-offs and Safeguards:
    • Collective storage savings: millions of dollars across network (Adriano’s estimate)
  • Future Considerations:
    • Alternative design principle discussed: “fetch less, prove more” - instead of relying on at-block to fetch old chain state directly, contracts should favor proving past state with cryptographic proofs brought into the contract
  • Community reporting
    • Community should report any severely broken use cases affected by at-block removal (Adriano)

SIP-40 Discussion: Improved Post Conditions (Non-Controversial)

  • Transaction Security:
    • New “originator mode” for wallet asset protection
    • Useful for complex DeFi interactions where you only care about your own asset movements
  • NFT post conditions enhancement:
    • Current: NFT sends or doesn’t send (binary)
    • New: “Maybe send” option (equivalent to fungible token’s “less than or equal”)
  • Future Considerations:
    • Dedicated address/principal specification for smart wallets

SIP-039 Discussion: Clarity 5 Fixes & Technical Updates (Non-Controversial)

  • Technical Fixes:
    • Fixes Secp256r1 function and at-block issues, and more → See forum post.
  • All three SIPs will be voted on together (not individually due to process complexity)

Clarinet Linter

  • New Linter Released:
    • Detects unused functions and common anti-patterns (announced by Hugo)
    • Upcoming: case-enforcement rules for variables/functions/constants
    • Hugo will demo the linter in a future ClarityWG call and requested community feedback

Contract Identity Naming Conventions

  • Discussion Points:
    • Timothy raised interest in stricter naming/case conventions and “identity” cues (e.g., identicons, consistent prefixes) to reduce UX/security confusion
    • Safer naming and identity patterns in contracts/principals
    • Possible follow-ups: additional linter rules plus written best-practice guidelines

:link: Resources & References

:megaphone: Call To Action

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