Crypto-Asset Regulation · glossary
Halcyon's rule that no live system changes without a change record approved first: what, why, risk, tests, rollback and approver. Compliance signs off any change to custody, transfers, reconciliation or surveillance. A vendor's update made without one caused the Travel Rule failure of February 2026. Binder §9.2 · Chapter 7 · Chapter 10
Explained in Chapter 7, AML and the Travel Rule, of Crypto-Asset Regulation.
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