Address Proof of Control

Overview

Address proof of control is evidence that a person or system can authorize actions using the private key or account authority associated with a blockchain address. It is commonly demonstrated by signing a defined challenge message or, when message signing is unsuitable, by completing a controlled transaction.

A verifier issues a unique, time-limited challenge containing the purpose, domain, nonce, address, network, and expiration. Related operational concepts include Refund Address Risk Check, Address Generation Policy, and Self-Custody Payment. They should remain connected through identifiers and evidence without being treated as the same payment state, control, or financial result.

In the same operational workflow, it should be interpreted alongside Refund Address Risk Check , Address Generation Policy , and Self-Custody Payment ; these terms describe related stages or controls but are not interchangeable. The authoritative record for Address Proof of Control should also show the rule version, responsible system, permitted state transition, and any downstream action such as fulfillment, settlement, refund, or manual review.

Treating the string alone as identity can create wrong-network errors, duplicate assignments, privacy leaks, or unsupported recovery expectations. In the same operational workflow, it should be interpreted alongside Refund Address Risk Check , Address Generation Policy , and Self-Custody Payment ; these terms describe related stages or controls but are not interchangeable.

A production review should make Address Proof of Control reproducible from authoritative records, assign an owner for exceptions, and retain the evidence behind each irreversible action. The core control principle is that a valid address-control proof demonstrates signing authority for a specific challenge, not identity, beneficial ownership, or lawful entitlement to the funds.