Execution Protocol Receipt

USD 165.52

EXECUTED

Cryptographic proof of an Execution Protocol sandbox transaction. Every step is hash-chained, signed, and verifiable using only the public key.

✓ Verified · EXECUTED

This verification ran in your browser. No data was sent to the issuer.

Structural — hash chain
Kid resolved
ES256 signature
Not quarantined

Transaction

Archetype: HOTEL_RESERVATION
Receipt ID: 831dbb33-fdc4-48f0-a607-1bdb831fbad3
Transaction ID: txn_hotel_executed
Event type: ORIGINAL
Payment status: charged
Chain integrity: Hash chain intact — 9 linked entries

Deterministic execution pipeline · 8 steps · all passed

#1
Authorisation token verified
token_validation
2ms
#2
Request shape validated
schema
3ms
#3
Boundary policy passed
boundary
5ms
#4
Required fields present
completeness
2ms

View full hash chain (9 entries)

#0 __genesis__0ms
in:null
out:null
hash:3d4242154bda2461e194b54c898a91a936af99eecd15412c4a5fe8d7d3cf309b
prev:0000000000000000000000000000000000000000000000000000000000000000
#1 token_validation2ms
in:{"tokenId":"tok-sandbox-public"}
out:{"tokenAccepted":true}
hash:b3dcbc436689dd41fa7b685b60507ae44cbe8543a913e75d2a26e493c0f6b6f2
prev:3d4242154bda2461e194b54c898a91a936af99eecd15412c4a5fe8d7d3cf309b
#2 schema3ms
in:

Verify locally

Run the verification in your browser. The receipt JSON and the published public key are the only inputs needed.

Spec: ep-receipt/2026-04-27
Algorithm: ES256
Canonicalisation: RFC 8785 JCS
Public keys: /.well-known/jwks.json

Open in /verify Run the 80-line Python verifier

Without an execution layer

✗ Action either runs unchecked or fails opaquely
✗ No third party can confirm what happened
✗ The audit trail is whoever the issuer says it is

With Execution Protocol

✓ Every action passes a deterministic policy gate
✓ Every terminal state emits a signed receipt
✓ Anyone with the public key can verify offline

The model can hallucinate. The execution layer cannot.

Receipt JSON

{
  "version": {
    "spec": "ep-receipt/2026-04-27"
  },
  "receiptId": "831dbb33-fdc4-48f0-a607-1bdb831fbad3",
  "transactionId": "txn_hotel_executed",
  "agentId": "agent_sandbox_demo",
  "sessionId": "session_sandbox",
  "created": "2026-05-09T04:51:27.100Z",
  "entries": [
    {
      "entryId": "5627cde4-2404-4e38-a6e6-f7c6661ee6a1",
      "index": 0,
      "stepName": "__genesis__",
      "input": null,
      "output": null,
      "startTime": "2026-05-09T04:51:27.100Z",
      "endTime": "2026-05-09T04:51:27.100Z",
      "latencyMs": 0,
      "cost": null,
      "error": null,
      "previousHash": "0000000000000000000000000000000000000000000000000000000000000000",
      "metadata": {},
      "hash": "3d4242154bda2461e194b54c898a91a936af99eecd15412c4a5fe8d7d3cf309b"
    },
    {
      "entryId": "7f2391be-563a-4008-bb6c-2fbcfab5280c",
      "index": 1,
      "stepName": "token_validation",
      "input": {
        "tokenId": "tok-sandbox-public"
      },
      "output": {
        "tokenAccepted": true
      },
      "startTime": "2026-05-06T14:30:00.000Z",
      "endTime": "2026-05-06T14:30:00.002Z",
      "latencyMs": 2,
      "cost": null,
      "error": null,
      "previousHash": "3d4242154bda2461e194b54c898a91a936af99eecd15412c4a5fe8d7d3cf309b",
      "metadata": {},
      "hash": "b3dcbc436689dd41fa7b685b60507ae44cbe8543a913e75d2a26e493c0f6b6f2"
    },
    {
      "entryId": "a692fd38-de95-49a6-9fb9-fcfb8d9cfaf3",
      "index": 2,
      "stepName": "schema",
      "input": {
        "archetype": "HOTEL_RESERVATION",
        "constraints": {
          "property_id": "hotel/tokyo-1",
          "check_in": "2026-05-08",
          "check_out": "2026-05-09",
          "max_total_usd": "200.00"
        }
      },
      "output": {
        "schemaValid": true
      },
      "startTime": "2026-05-06T14:30:00.003Z",
      "endTime": "2026-05-06T14:30:00.006Z",
      "latencyMs": 3,
      "cost": null,
      "error": null,
      "previousHash": "b3dcbc436689dd41fa7b685b60507ae44cbe8543a913e75d2a26e493c0f6b6f2",
      "metadata": {},
      "hash": "305e118f3e8899535b3c28a9bfed386aab22b2a45b079e2d5d1bdfb2122480ef"
    },
    {
      "entryId": "1c62ca95-a8ea-409b-9a1d-cd4d46aeb047",
      "index": 3,
      "stepName": "boundary",
      "input": {
        "archetype": "HOTEL_RESERVATION"
      },
      "output": {
        "policyPassed": true
      },
      "startTime": "2026-05-06T14:30:00.007Z",
      "endTime": "2026-05-06T14:30:00.012Z",
      "latencyMs": 5,
      "cost": null,
      "error": null,
      "previousHash": "305e118f3e8899535b3c28a9bfed386aab22b2a45b079e2d5d1bdfb2122480ef",
      "metadata": {},
      "hash": "e030446181e5422679379cdf7bcf2caa430bd084a3a2a6d09e35f0e9857f39ca"
    },
    {
      "entryId": "0d14dffe-0ac9-4c01-b1ab-5eaf2eb374d6",
      "index": 4,
      "stepName": "completeness",
      "input": {
        "archetype": "HOTEL_RESERVATION"
      },
      "output": {
        "allRequiredPresent": true
      },
      "startTime": "2026-05-06T14:30:00.013Z",
      "endTime": "2026-05-06T14:30:00.015Z",
      "latencyMs": 2,
      "cost": null,
      "error": null,
      "previousHash": "e030446181e5422679379cdf7bcf2caa430bd084a3a2a6d09e35f0e9857f39ca",
      "metadata": {},
      "hash": "a0cfbb0567f4b5797814cff3569883fb2a5428b046d703956f810cca464d40e8"
    },
    {
      "entryId": "eefb6242-e470-4d83-b62a-2d1ba1740ad5",
      "index": 5,
      "stepName": "math",
      "input": {
        "archetype": "HOTEL_RESERVATION"
      },
      "output": {
        "anomalyVerdict": "ok",
        "score": 0.94
      },
      "startTime": "2026-05-06T14:30:00.016Z",
      "endTime": "2026-05-06T14:30:00.024Z",
      "latencyMs": 8,
      "cost": null,
      "error": null,
      "previousHash": "a0cfbb0567f4b5797814cff3569883fb2a5428b046d703956f810cca464d40e8",
      "metadata": {},
      "hash": "1929f1a754a7c6d159924bcba2afa8f8e63fbbc88fca318197a6d5e36d3b625a"
    },
    {
      "entryId": "c4e94c4c-49ed-4e14-a640-5d5a166d1a35",
      "index": 6,
      "stepName": "execute",
      "input": {
        "archetype": "HOTEL_RESERVATION",
        "constraints": {
          "property_id": "hotel/tokyo-1",
          "check_in": "2026-05-08",
          "check_out": "2026-05-09",
          "max_total_usd": "200.00"
        }
      },
      "output": {
        "providerRef": "duffel-hotel-XQ9K2",
        "chargedAmount": "165.52"
      },
      "startTime": "2026-05-06T14:30:00.025Z",
      "endTime": "2026-05-06T14:30:00.825Z",
      "latencyMs": 800,
      "cost": null,
      "error": null,
      "previousHash": "1929f1a754a7c6d159924bcba2afa8f8e63fbbc88fca318197a6d5e36d3b625a",
      "metadata": {},
      "hash": "742e82e68fc6c67f2303563c04757d1d2703fb9b5500db107e00d46367e13162"
    },
    {
      "entryId": "1e83d3b1-17d0-460c-8d68-1ac7752daa56",
      "index": 7,
      "stepName": "commit_auth_split",
      "input": {
        "providerRef": "duffel-hotel-XQ9K2"
      },
      "output": {
        "committed": true
      },
      "startTime": "2026-05-06T14:30:00.826Z",
      "endTime": "2026-05-06T14:30:00.830Z",
      "latencyMs": 4,
      "cost": null,
      "error": null,
      "previousHash": "742e82e68fc6c67f2303563c04757d1d2703fb9b5500db107e00d46367e13162",
      "metadata": {},
      "hash": "66ed8fb0a4ac80ddb22b9726248f9a7cd448d454b537a7289da18186478888f8"
    },
    {
      "entryId": "239f7fc3-1e49-4ea9-93c9-6dbe3e193db3",
      "index": 8,
      "stepName": "receipt",
      "input": null,
      "output": {
        "signed": true
      },
      "startTime": "2026-05-06T14:30:00.831Z",
      "endTime": "2026-05-06T14:30:00.951Z",
      "latencyMs": 120,
      "cost": null,
      "error": null,
      "previousHash": "66ed8fb0a4ac80ddb22b9726248f9a7cd448d454b537a7289da18186478888f8",
      "metadata": {},
      "hash": "10406e831ab56fd4a0609ee70110d2006c9755352f2d544279d2c54b665b5a40"
    }
  ],
  "signature": {
    "kid": "sandbox-2026-05",
    "alg": "ES256",
    "value": "5yH3SOls5wYmBNVr38sNOFZxdaSFsP45ae0iiHlj9WcN37uBmJ3piAr8qZqnJ30fxOxKXIeXu8Vd8C8AyfGTzA"
  },
  "amendmentOf": null,
  "eventType": "ORIGINAL",
  "paymentStatus": "charged",
  "money": {
    "offerCurrency": "USD",
    "offerAmount": "165.52",
    "chargeCurrency": "USD",
    "chargeAmount": "165.52"
  },
  "idempotencyKey": "idem_hotel_executed",
  "replicaId": "sandbox-replica-0",
  "chainId": "chain_hotel_executed",
  "regulatoryFramework": [],
  "metadata": {
    "sandbox": true,
    "fixtureId": "hotel-ok",
    "pairId": "hotel",
    "outcome": "executed"
  }
}