Proposal: Canton Collateral Control Plane

OPENPull Request
by cgdusek30-03-2026Incoming
View on GitHub ↗← All Proposals

Development Fund Proposal Submission

Proposal file: /proposals/canton-collateral-control-plane.md

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Summary

This proposal creates an open-source, Scala/Daml-native reference control layer for collateral eligibility, haircuting, concentration limits, encumbrance state, substitution, allocation, pre-positioning, release control, and atomic collateral mobility on the Canton Network. It delivers shared collateral infrastructure modeled on central-bank, tri-party, and CCP collateral practice, providing a reusable policy and optimization layer that financing apps, bilateral derivatives apps, tokenized-asset platforms, custodial workflows, and treasury desks can integrate.

Prototype repository: merged-one/canton-collateral-control-plane

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Checklist

  • [x] Proposal file added under /proposals/
  • [x] Milestones and funding amounts defined
  • [x] Acceptance criteria included
  • [x] Alignment with Canton priorities described

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Notes for Reviewers

This proposal is scoped as a shared ecosystem collateral utility layer, not a venue, CCP, or proprietary product. The initial funded scope covers:

  • collateral policy language and formal invariant catalog
  • deterministic policy engine with haircut and concentration-limit evaluation
  • best-to-post / cheapest-to-deliver optimization and substitution
  • end-to-end Daml workflows for margin call, return, substitution, and close-out
  • conformance suite with negative-path scenarios
  • public release with Quickstart-based demo environment

A working prototype already exists at merged-one/canton-collateral-control-plane, demonstrating DAR deployment into a pinned Quickstart runtime, a concrete reference token-adapter path, and Quickstart-backed confidential margin-call, substitution, and return flows with machine-readable conformance artifacts.

Feedback is especially welcome on:

  • priority collateral workflow families for the initial release
  • preferred reference environments and asset adapter targets
  • expectations around policy profile coverage (bilateral, tri-party, CCP, central-bank)
  • desired format for conformance and qualification outputs