OpenChainGraph Suite · ART-109 · wave 21

DTC-Custodied Tokenized Treasury Issuance & DvP Validator

Validates a DTCC/ComposerX tokenized U.S. Treasury for DTC-custody linkage, Fed-eligibility, ComposerX DAML lifecycle coverage, and programmable-collateral-reuse eligibility. Specific to DTC-custodied USTs — not generic securities lifecycle or FICC clearing economics.

Zero PII Client-side only DTC Custody ComposerX DAML DvP Atomicity
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DTC / ComposerX Context
DTCC DTC serves as the primary U.S. CSD for tokenized Treasury securities. ComposerX DAML smart-contract templates must cover issuance, corporate actions (coupon/interest), and redemption lifecycle events for full DAML lifecycle conformance. Fed-eligibility requires CUSIP classification as UST/T-Bill/T-Note/T-Bond. DvP settlement readiness requires both DTC custody linkage and Fed eligibility.
Presets
UST Configuration
Lifecycle Events

Select all lifecycle events covered by the DAML template. Required: issuance, corporate_actions, redemption.

Collateral Reuse Policy
Validation Summary
Check-by-Check Results
Compliance Flags
⚠ DECISION-SUPPORT DRAFT. Not a filing or legal advice. Verify all DTCC DTC custody rules, Fed eligibility criteria, and ComposerX DAML template requirements against current DTCC, Federal Reserve, and DAML documentation.
Execution Hash & §4 Artifact
SHA-256 execution hash (JCS canonical):