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#866Incoming Pull Request10.3M CC requested

Proposal: OS Ledger (RFP 27, Security Monitoring, Auditability and Evidence)

Outersunset-Ops30-09-2026Last activity today

Development Fund Proposal Submission

Proposal file: rfps/security-assurance-incident-readiness/2026-09-OuterSunset-os-ledger.md

Applicant

Organization: Outer Sunset (outersunset.io)

Author / Primary Contact: Long Do, Outer Sunset

Champion: Needs Champion

Proposal Classification

Proposal Type:

  • RFP-aligned proposal
  • Individual initiative

RFP / Roadmap Area: RFP 27, Security Monitoring, Auditability and Evidence (primary). RFP 20, Indexers (secondary). Roadmap area: Security, Assurance & Incident Readiness.

Label: regulatory-compliance

Funding & Timeline

Total Funding Request: 10,300,000 CC for the first 12 months (8,500,000 CC delivery across M1-M6, plus 1,800,000 CC service and maintenance for year 1, paid quarterly at 450,000 CC)

Project Duration: 4 months delivery, followed by a 12 month service and maintenance term renewable by committee decision. Duration exceeds 6 months, so the 6-month Canton Coin re-evaluation stipulation applies and is acknowledged in the proposal.

Maximum Amount: N/A

Maximum Duration: N/A

Summary

Every validator operator, app provider and Super Validator on Canton earns Canton Coin and pays network fees every round, and today none of them can close their books without a CSV export, a spreadsheet and one person who knows the formulas. OS Ledger is a finance-close stack for Canton that turns ledger activity into balanced double-entry journal entries with a controlled month-end close, an audit trail back to the originating on-chain update, and on-ledger attestation of each approved entry as a Daml contract. This proposal funds releasing the stack under Apache 2.0, completing period-level attestation with an independent verifier and GL exporters, and operating a subsidized managed service so validator operators can adopt it without running finance infrastructure themselves.

Supersedes #798 and #799, which were auto-closed under the retired champion check.

Submission Checklist

  • Full proposal file is included in this PR
  • Organization and primary contact identified
  • Champion identified or Needs Champion selected
  • RFP / roadmap alignment identified, if applicable
  • Total funding request provided
  • Project duration provided
  • Proposal is within any RFP maximum amount
  • Proposal is within any RFP maximum duration
  • Milestones and milestone funding are defined in the proposal
  • Acceptance criteria are based on ecosystem value
  • Architectural alignment is addressed
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