Evidence row 123151

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://twin.unykorn.org/hash-hmac"
    ]
  ],
  "name": "HMAC of a message under a key",
  "owner_address": "0x7d9a65d06dcc435a52d5880c6310bd6e96c156db",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
        "scheme": "exact"
      }
    ],
    "description": "HMAC of a message under a key — Genesis402 / UnyKorn Operator Network",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "params": {
                "key": "secret",
                "text": "payload"
              }
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "generated_at": "<iso8601>",
              "ok": true,
              "receipt": {
                "amount_usd": 0.003,
                "receipt_id": "g402-<16hex>",
                "tx_hash": "0x<64hex>"
              },
              "type": "hash-hmac"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "params": {
                      "properties": {
                        "algorithm": {
                          "description": "string",
                          "type": "string"
                        },
                        "hex": {
                          "description": "0x-prefixed hex data",
                          "pattern": "^0x[0-9a-fA-F]*$",
                          "type": "string"
                        },
                        "key": {
                          "description": "string",
                          "type": "string"
                        },
                        "text": {
                          "description": "UTF-8 text, up to 48 KiB",
                          "maxLength": 49152,
                          "type": "string"
                        }
                      },
                      "required": [
                        "key"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "params"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:12:36.66Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:12:36.548Z"
    },
    "resource": "https://twin.unykorn.org/hash-hmac",
    "serviceName": "HMAC of a message under a key",
    "tags": [
      "hashing",
      "digest",
      "deterministic",
      "integrity",
      "HMAC"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "HMAC of a message under a key — Genesis402 / UnyKorn Operator Network"
}

What the leaf hashes

{"body":"bee21e5a8b4946473c44afde1278baefe2b2687428b249b1e97d14b3c448724c","id":123151,"kind":"listing","method":"baseline/1","observed_us":1793025622796359,"prev":null,"subject":"x402_bazaar:https://twin.unykorn.org/hash-hmac","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xae0c172d0de11d06d3962f310eb07c63dbc38c0faa2a3e86c30342ac9ee09036
2. 0x75c3d616d1622611c28e70e40d5cfb728f10859f8d22123adc71d1e5ec4d4c54
3. 0xbb3956a7b6ecfddf7d8c8ed5029b627aa0516edc87a442ac9d9da621b2c5e814
4. 0x0fe2a548691dd08b472aba9b5e148bf4b8485dbbb514366733683c66a11229c3
5. 0x4b7da5d486772dc2677d4b30e82a8d7e6870aad18cfe1d658d8576c6b277dc5d
6. 0x858552a6d4a9194ab7bd69b360370729586d86384bb39f3b5175f9a9e1d9875b
7. 0x46b947ea2e5dbf49ce273d8a0c8ec3cc581377f8176aa70543b04e7623140e4e
8. 0xb90c6019b58b536c51661e0f95eca6e1a81620a1938168290cff88f46976a9b3
9. 0x80fe5c3f24b47a73955a91ae2241f691c79abce83a2732d5e9eaf806332c2ccb
10. 0x3c54c01bf4318d5a836732de25aa152fd493cfc74e9e7d61b6833262a76c28e9
11. 0x3ed84d9e7fe1a3a53a5614d97b48e393d726ca06109e83696375afe5ad01fd8f
12. 0x51f06c175a7c946ebe50ef243d6f9370a8fe85c996e53eff19ffcc4585ea8c18
13. 0xe292b5a99219f136bce6647ce74b21240a1c7331d2475b1839220fd363c94217
14. 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae