Chain-of-custody for autonomous execution.

In evidentiary contexts, chain-of-custody is the documentation that shows who held an item, when, and under what authority — preserved unbroken from origin to use. EXOCHAIN extends that discipline to autonomous action.

HUMAN Principal declares intent
AVC Autonomous Volition Credential
scope · expiry · signature
AGENT Subject acts within scope
EXOCHAIN Custody-Native Blockchain + Verifiers
validates · records · attests
RECEIPT Trust + Settlement
REVOCATION · CASCADES THROUGH AVC

What chain-of-custody preserves

Sequence

The blockchain mechanism preserves order. Each block extends the prior block's hash, and the order in which receipts are committed cannot be revised after finality without detection.

Responsibility

Chain-of-custody preserves responsibility. Every action references the credential that authorized it, the principal that issued the credential, and the consent, policy, and revocation state in effect when the action occurred.

Blockchain proves sequence. Chain-of-custody proves responsibility.

Revocation cascades

Revocation is a first-class operation on the credential graph. When an issuer revokes an AVC, every credential derived from it inherits the revocation. Already-issued receipts remain as evidence of past authorization; future actions under the revoked credential fail-closed at validation.