Evidence row 4490

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-hash-api.vercel.app/sha256"
    ]
  ],
  "name": "x402-hash-api.vercel.app",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453",
      "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
    ],
    "category": "",
    "description": "",
    "domain": "x402-hash-api.vercel.app",
    "endpoints": [
      {
        "description": "SHA-256 hash — compute a SHA-256 hex digest of a text string (sha256 hash / cryptographic hash).",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "hello",
            "group": "body",
            "name": "data",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "utf8",
            "group": "body",
            "name": "encoding",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.001",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "4",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://x402-hash-api.vercel.app/sha256"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "x402-hash-api-vercel-app",
    "integrationType": "",
    "isNew": false,
    "name": "x402-hash-api.vercel.app",
    "networks": [
      "Base",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.001",
      "currency": "USDC",
      "maxAmount": "0.001",
      "minAmount": "0.001"
    },
    "provider": "x402-hash-api.vercel.app",
    "providerUrl": "",
    "serviceName": "",
    "tags": []
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"fb0096523bcd7de3611dfcb22b2501ed4aefee81682aa2d884fa449fa5232aff","id":4490,"kind":"listing","method":"baseline/1","observed_us":1793025277975067,"prev":null,"subject":"agentic_market:x402-hash-api-vercel-app","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. 0x64034af5e438871163bb84d509f69256a0714a1fc01d0781bbc1eea4556e2d72
2. 0x0f2c91ba4dbbdb171fb4881a8b91e4c11fabf0c7cba7fcf8da309c5d1fbb70c0
3. 0xbb497842329a11f487b1a63aa8aa7b086c02ea24d1d48ff6924d8d262ba1cd5d
4. 0x3afeda6012158aecc693e08a16038dfbbc1b2060e5ca2cbd89095611b96161d9
5. 0xb338cce235d072da382ceb501800e48aaf1c81cbb0633c38c0a7634ba549d70b
6. 0x3485971d9c5bb1164e7450d65a54e0c460796303d097cf9895410c864cd2c1c8
7. 0xebbf14654d02609f6e4767a54d38f56ce0e307df60da635e29f0bc665e989501
8. 0x267e6abc04a54042ee3c6b3efbc2b37f6877dac6151a010e1847a85b8ffdb61e
9. 0xfccaf824f53ca3ae31b1724c008f31600edf9905032595022ba29bb4ca91a231
10. 0x7dd6ecfa9185a17104569489cbef33034bbe40fda02f46c4806f2506cfdf5d24
11. 0x4008ba50886e166082b39cf7d2aabf1793fbc0c9ee377f5c8c84131ff6d65579
12. 0x3c8355143bb13802401d5a80f8a70809a59f429bc298f4912731fc8d207e4f43
13. 0x13f4b94ecf613d585c952b5363dad2b247a55371eb8e358bb89dc033e83128b1
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae