Contract-Agnostic Merkle Attestation Sidecar
VotingPR- SIG
- defi-liquidity
- Champion
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- Author org
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- Ask
- source pending
Abstract
Canton builders currently lack a standard way to prove participant ledger state to external systems without exposing the full Active Contract Set (ACS), forcing each integration to design a bespoke attestation and verification mechanism. This proposal will build the Merkle ACS Sidecar: a configurable, per-participant service that streams ACS data, commits selected Daml contract fields into Merkle trees, publishes roots to external verifiers, and supports inclusion and non-inclusion proofs, with a Canton↔EVM bridge PoC as an initial integration. The result is reusable, privacy-preserving public-verifiability infrastructure that lowers integration effort and enables applications such as collateral verification, proof-of-reserves, compliance attestations, and external settlement across the Canton ecosystem.
Milestones
No milestones recorded.
- % of approved-to-date
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- % if all RFV pass
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RFV scenario unavailable — using approved-to-date as denominator (degraded mode).
- Ask (CC)
- amount pending
Comments by org
5 comments · 3 orgs · last activity Oct 23, 2026
| Organisation | Comments |
|---|---|
| Unknown | 2 |
| BootNodeDev | 1 |
| Canton Foundation | 1 |
| DLC.Link | 1 |