Untitled bd613e0c3e3c

Rotunda da Boavista, Porto, Porto, Portugal · 23 Nov 2019 · Apple iPhone X · iPhone X back dual camera 6mm f/2.4

art, outdoor, sculpture, sky, statue

Taken: 2019-11-23T11:33:13.443686-05:00
Original: 3024 x 4032 px, 1.4 MB JPEG
SHA-256: bd613e0c3e3c52d689a5d62f6865e571020742405a414e5e3e387699aba97ced
Id: bd613e0c3e3c

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0.50 USDC

3024 × 4032 px original. 500000 atomic units, eip155:8453 (exact scheme). License v1.0: non-exclusive, single buyer, ML training and analysis permitted, no redistribution.

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402 comes back with a PAYMENT-REQUIRED header: base64 JSON, accepts[0] = {scheme, network, asset, amount, payTo}, the same object plus license as the body.
Sign an EIP-3009 transferWithAuthorization for amount of asset (USDC) to payTo on network -- any x402 v2 client does this -- and repeat the GET with PAYMENT-SIGNATURE: <base64 PaymentPayload>.
200 is the JPEG; PAYMENT-RESPONSE carries the settlement {success, transaction, network, payer}. 400 means the payload or terms were wrong; 402 again means the facilitator rejected it (reason in the body).

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