Proposal: Canton Reference Data Oracle Standard (CRDOS)

[blackthornlover]

Development Fund Proposal Submission

Proposal file: proposals/canton-reference-data-oracle-standard.md

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Summary

This PR adds the Canton Reference Data Oracle Standard (CRDOS) — a privacy-aware, identity-backed specification and reference implementation for how identified Canton participants publish authoritative reference data (FX rates, benchmark rates, asset prices) to authorized on-ledger consumers, using Canton's native selective disclosure model and institutional accountability as the trust foundation rather than cryptoeconomic staking mechanisms designed for anonymous networks.

Checklist

• I have read the contribution guidelines
• The proposal follows the template structure in proposals/_template.md
• I have included a clear abstract, specification, milestones, and funding breakdown
• The proposal includes adoption-based milestones with verifiable acceptance criteria

Notes for Reviewers

• Suggested label: financial-workflows-composability
• Total funding request: 1,300,000 CC across 4 milestones
• Branch: canton-oracle-standard (clean branch off canton-foundation:main — 1 commit, 1 file)
• This proposal is explicitly not a staking-based decentralized oracle network. It is a Canton-native reference data standard that relies on the identity and institutional accountability of known Canton participants — a fundamentally different and simpler trust model appropriate for a permissioned network.