proof402
x402
machine-commerce
trust
Commerce Receipt
Verify an x402 commercial state and persist a signed Ed25519 Proof402 receipt whose Commerce State Root commits request, offer, policy, payment, settlement, and delivery evidence; receipts are later Merkle-batched for public inclusion proofs. Current x402 price: $0.03. A stable Idempotency-Key is required across challenge and paid retry.
post/v1/commerce-receipt
Request
- Base URL: https://api.salt19.com
- URL: https://api.salt19.com/v1/commerce-receipt
- Auth: none declared
Headers
Idempotency-Keystring
Recommended for the strongest semantic at-most-once retry contract. Standard x402 clients may omit it; SALT19 derives a compatibility operation identity from the payment proof and canonical purchase on paid retry.
Request body
Response
Proof402 result
Changes
No recorded changes to this operation across all 1 revision of this API.