{"receipt":{"receipt_id":"g402-762ae90c7c3c1963","task":"verify-receipt","request_class":"verify-receipt","rail":"base:usdc","tx_hash":"0x8fb4c94cdcc38cb15a4a4b4dc71669bec1947145c4c1c06432fcef98e92560bc","amount_usd":0.005,"paid":"$0.005 USDC","settled_by":"cdp","payer":"0x117459d013492eC5fF90387B16764e753C506ec9","internal":true,"result_sha256":"4c22cc9da51b2ce067200b2f59062fad2ffafe1d5a83f205e4b619cf16c11359","duration_ms":0,"at":"2026-10-06T02:50:16.603Z","signature":{"alg":"ed25519","key_id":"g402-key-abd1d4075c8eeded","domain":"genesis402-payment-receipt/1","value":"32438bf3473b1487665270bb88f0122333a46c238092ff2744ddc20fe1e5412001999d6549e85251327772f54204e75b0edab7e6fc00ba5e53680c05feb8920a"}},"what":"A complete payment receipt as issued, signature included. It was paid from an operator wallet (a rail test, not demand), so publishing it in full exposes no buyer.","verify":{"url":"https://twin.unykorn.org/receipts/verify","method":"POST","body":"{\"receipt\": <the receipt object above>}"},"keys":"/prove/keys","method":"Ed25519 over \"genesis402-payment-receipt/1\\n\" + RFC 8785 (JCS) canonical JSON of the receipt without its signature field","limitation":"A signature shows the receipt was issued by this rail's key and has not been changed since. It is not an external timestamp or a third-party attestation. Receipts issued before 25 September 2026 are unsigned."}