Crypto x402 Escrow Payments Layer

The Untrace Escrow Payments Layer combines programmable on-chain escrow with the HTTP 402 Payment Required standard — enabling native, machine-readable payment flows between humans, businesses, and AI agents directly at the protocol level.

Untrace Escrow: How It Works

Untrace's escrow layer with smart contract-enforced escrow — funds are not released until cryptographically verifiable conditions are met.

Basic Flow

[ Buyer submits payment → locked in Untrace escrow contract ]
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[ Seller receives proof-of-escrow, begins delivering service ]
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[ Delivery verified by: (a) buyer signature, (b) ZK oracle, or (c) timeout ]
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[ Funds released to seller automatically ]
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[ On-chain receipt anchored — tamper-evident record ]

If a dispute arises, neither party can unilaterally access funds. Resolution requires either mutual agreement or an on-chain arbitration mechanism or timelock-refund logic.

AI Agent Payments

The x402 standard is purpose-built for the AI agent economy. Autonomous agents browsing the web, calling APIs, and interacting with services need a machine-native payment primitive — not a human-facing checkout flow.

This enables a new class of fully autonomous, value-exchanging AI agents that can pay for data, compute, and services on-chain natively.