Evidence row 525876

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-paid-mcp.vercel.app/api/v1/sha256"
    ]
  ],
  "name": "x402-paid-mcp.vercel.app",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453",
      "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
    ],
    "category": "",
    "description": "",
    "domain": "x402-paid-mcp.vercel.app",
    "endpoints": [
      {
        "description": "Compute a SHA-256 hex digest of a text payload. Cryptographic hash / checksum helper. Not an attestation.",
        "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": "37",
          "l30DaysUniquePayers": "6"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://x402-paid-mcp.vercel.app/api/v1/sha256"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "x402-paid-mcp-vercel-app",
    "integrationType": "",
    "isNew": false,
    "name": "x402-paid-mcp.vercel.app",
    "networks": [
      "Base",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.001",
      "currency": "USDC",
      "maxAmount": "0.001",
      "minAmount": "0.001"
    },
    "provider": "x402-paid-mcp.vercel.app",
    "providerUrl": "",
    "serviceName": "",
    "tags": []
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"14b8b937d38cae1478ccfbf03d2c6ff4182537cab2b1cb009bc55d991fc30742","id":525876,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793124768647893,"prev":4537,"subject":"agentic_market:x402-paid-mcp-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 2026-10-27 (273461 rows).

1. 0xc385ab4a38f2102e0e0dd1b660c2645d127e0f2449501c7fcdbb65614107f98c
2. 0xd4dee9e5eecdcecf5e023263c51ce4d8419840029be2fce2c1d25af7f6da98ff
3. 0x6648a349e9602c395ae3fd9a13f1b6b97aba7fdcc90fb11b27bf9c576e0bb2de
4. 0x4d8f6b21b1a697d7199d97c4b372765ed0c4b98a6567d91e29eb6baf1b91ce06
5. 0xaf32baf0fb4b5f54d5eefd0fa37e1e0f2c98c9641fbbdb08ffb1080cbdbf7df8
6. 0xdf6d2d1e87266f62ce2ef54aa05096091739ef304855890672a055ce99b1e680
7. 0x51ca14391930847a8c2e12678a60af05c889f7f5f85274a9436436e680bcd4c2
8. 0x48ec46b452fd1fe104e50aa9b0cd9375807d22ebd9414f2f72372bb741284e37
9. 0x1c5d7c02d41b1566106442d1ebe30295ece39dced5215299d20b2d61d23a4202
10. 0xd8334c3990f415a10f80380be5148a1928931c1246120ffbbbd52e9399056159
11. 0x1508fd39a92015f2675aefede1d322b337358ef9cb1fdde46c7fa9276f6b3d5f
12. 0x09c148bbe62d15164b3840b798915bcd800d49ae022a1820cd04cc89b1b4e59a
13. 0xb48b088603004f0a5232faea4acd65999cbb4832f4c15b0098e853144cb91655
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4