Execution Protocol Receipt

USD 167.72

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: FLIGHT_BOOKING
Receipt ID: 5eb7d83e-d4bd-43af-b7f8-00b1c3fd0ad4
Transaction ID: txn_flight_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:e975d2ef39387946bd5a9a914b6b0484216808fdcc5ebfe1aab8d42addf768cc
prev:0000000000000000000000000000000000000000000000000000000000000000
#1 token_validation2ms
in:{"tokenId":"tok-sandbox-public"}
out:{"tokenAccepted":true}
hash:4337cc516468256ba56446b203449f4b34f4a789dc67938dd47382f71aea1fca
prev:e975d2ef39387946bd5a9a914b6b0484216808fdcc5ebfe1aab8d42addf768cc
#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": "5eb7d83e-d4bd-43af-b7f8-00b1c3fd0ad4",
  "transactionId": "txn_flight_executed",
  "agentId": "agent_sandbox_demo",
  "sessionId": "session_sandbox",
  "created": "2026-05-09T04:51:27.171Z",
  "entries": [
    {
      "entryId": "dc986d6c-93a5-47b6-8d94-200f5a9469fd",
      "index": 0,
      "stepName": "__genesis__",
      "input": null,
      "output": null,
      "startTime": "2026-05-09T04:51:27.171Z",
      "endTime": "2026-05-09T04:51:27.171Z",
      "latencyMs": 0,
      "cost": null,
      "error": null,
      "previousHash": "0000000000000000000000000000000000000000000000000000000000000000",
      "metadata": {},
      "hash": "e975d2ef39387946bd5a9a914b6b0484216808fdcc5ebfe1aab8d42addf768cc"
    },
    {
      "entryId": "10eb07fb-8015-4de8-9804-55c136881abc",
      "index": 1,
      "stepName": "token_validation",
      "input": {
        "tokenId": "tok-sandbox-public"
      },
      "output": {
        "tokenAccepted": true
      },
      "startTime": "2026-05-06T14:36:00.000Z",
      "endTime": "2026-05-06T14:36:00.002Z",
      "latencyMs": 2,
      "cost": null,
      "error": null,
      "previousHash": "e975d2ef39387946bd5a9a914b6b0484216808fdcc5ebfe1aab8d42addf768cc",
      "metadata": {},
      "hash": "4337cc516468256ba56446b203449f4b34f4a789dc67938dd47382f71aea1fca"
    },
    {
      "entryId": "a654d4fb-ac95-439a-8e14-527b98e19350",
      "index": 2,
      "stepName": "schema",
      "input": {
        "archetype": "FLIGHT_BOOKING",
        "constraints": {
          "origin": "JFK",
          "destination": "LAX",
          "depart_date": "2026-06-06",
          "cabin": "economy",
          "max_total_usd": "500.00"
        }
      },
      "output": {
        "schemaValid": true
      },
      "startTime": "2026-05-06T14:36:00.003Z",
      "endTime": "2026-05-06T14:36:00.006Z",
      "latencyMs": 3,
      "cost": null,
      "error": null,
      "previousHash": "4337cc516468256ba56446b203449f4b34f4a789dc67938dd47382f71aea1fca",
      "metadata": {},
      "hash": "2fbee1f3ab472fac8d5f67d31e4e3a70d4108fa3e6d287c9c6a515a52bc5e20b"
    },
    {
      "entryId": "ff917fe2-c873-461e-bf63-f78364451390",
      "index": 3,
      "stepName": "boundary",
      "input": {
        "archetype": "FLIGHT_BOOKING"
      },
      "output": {
        "policyPassed": true
      },
      "startTime": "2026-05-06T14:36:00.007Z",
      "endTime": "2026-05-06T14:36:00.012Z",
      "latencyMs": 5,
      "cost": null,
      "error": null,
      "previousHash": "2fbee1f3ab472fac8d5f67d31e4e3a70d4108fa3e6d287c9c6a515a52bc5e20b",
      "metadata": {},
      "hash": "da9d345c6ffacce4bdc34f7de9136def6aa5f92f97495db4476c73e22f711a35"
    },
    {
      "entryId": "0d7993cd-f207-45ba-a0c7-092c0ad03128",
      "index": 4,
      "stepName": "completeness",
      "input": {
        "archetype": "FLIGHT_BOOKING"
      },
      "output": {
        "allRequiredPresent": true
      },
      "startTime": "2026-05-06T14:36:00.013Z",
      "endTime": "2026-05-06T14:36:00.015Z",
      "latencyMs": 2,
      "cost": null,
      "error": null,
      "previousHash": "da9d345c6ffacce4bdc34f7de9136def6aa5f92f97495db4476c73e22f711a35",
      "metadata": {},
      "hash": "2d635ba2ddc948af476da1a101552a02cf715ef33064ffd8bd5b0817d4813283"
    },
    {
      "entryId": "b1f49c5e-0a30-4fdf-baeb-464ffd707250",
      "index": 5,
      "stepName": "math",
      "input": {
        "archetype": "FLIGHT_BOOKING"
      },
      "output": {
        "anomalyVerdict": "ok",
        "score": 0.94
      },
      "startTime": "2026-05-06T14:36:00.016Z",
      "endTime": "2026-05-06T14:36:00.024Z",
      "latencyMs": 8,
      "cost": null,
      "error": null,
      "previousHash": "2d635ba2ddc948af476da1a101552a02cf715ef33064ffd8bd5b0817d4813283",
      "metadata": {},
      "hash": "6f277cd789b43c589422e6c8e7490fc4625c1f309ac654497fdf78ad04bac270"
    },
    {
      "entryId": "2f907db1-7146-47f0-8513-c620902b59fd",
      "index": 6,
      "stepName": "execute",
      "input": {
        "archetype": "FLIGHT_BOOKING",
        "constraints": {
          "origin": "JFK",
          "destination": "LAX",
          "depart_date": "2026-06-06",
          "cabin": "economy",
          "max_total_usd": "500.00"
        }
      },
      "output": {
        "providerRef": "duffel-flight-JX6OLY",
        "chargedAmount": "167.72"
      },
      "startTime": "2026-05-06T14:36:00.025Z",
      "endTime": "2026-05-06T14:36:00.825Z",
      "latencyMs": 800,
      "cost": null,
      "error": null,
      "previousHash": "6f277cd789b43c589422e6c8e7490fc4625c1f309ac654497fdf78ad04bac270",
      "metadata": {},
      "hash": "4a0d47b4485fb70106bd8c67e770364d519756337b9b1487b19fab7856ab5e5f"
    },
    {
      "entryId": "291d6042-7c08-4eb2-9e45-d8f73e43a40b",
      "index": 7,
      "stepName": "commit_auth_split",
      "input": {
        "providerRef": "duffel-flight-JX6OLY"
      },
      "output": {
        "committed": true
      },
      "startTime": "2026-05-06T14:36:00.826Z",
      "endTime": "2026-05-06T14:36:00.830Z",
      "latencyMs": 4,
      "cost": null,
      "error": null,
      "previousHash": "4a0d47b4485fb70106bd8c67e770364d519756337b9b1487b19fab7856ab5e5f",
      "metadata": {},
      "hash": "cd97e70700b0607ddc0d189aa9309937ed4923e68e459d50b0d4d93ccd953ff0"
    },
    {
      "entryId": "e00d07b7-3dc0-45ee-918f-eb112c11f74d",
      "index": 8,
      "stepName": "receipt",
      "input": null,
      "output": {
        "signed": true
      },
      "startTime": "2026-05-06T14:36:00.831Z",
      "endTime": "2026-05-06T14:36:00.951Z",
      "latencyMs": 120,
      "cost": null,
      "error": null,
      "previousHash": "cd97e70700b0607ddc0d189aa9309937ed4923e68e459d50b0d4d93ccd953ff0",
      "metadata": {},
      "hash": "329d5143f79dfc4fc09483e535597f68616d304a21940d0af14d2c868fb53d52"
    }
  ],
  "signature": {
    "kid": "sandbox-2026-05",
    "alg": "ES256",
    "value": "4-W-GPoU78-3BSmBt5Zj71edBZgaGdZP7KvSljifJ4qYqRidMW7U6te3RIWM7HsW3wTxyFY6EoQev2KYmJmgYw"
  },
  "amendmentOf": null,
  "eventType": "ORIGINAL",
  "paymentStatus": "charged",
  "money": {
    "offerCurrency": "USD",
    "offerAmount": "167.72",
    "chargeCurrency": "USD",
    "chargeAmount": "167.72"
  },
  "idempotencyKey": "idem_flight_executed",
  "replicaId": "sandbox-replica-0",
  "chainId": "chain_flight_executed",
  "regulatoryFramework": [],
  "metadata": {
    "sandbox": true,
    "fixtureId": "flight-ok",
    "pairId": "flight",
    "outcome": "executed"
  }
}