Evidence row 3959630

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://chess-notation.x402tookit.com/material-count"
    ],
    [
      "x402",
      "https://chess-notation.x402tookit.com/piece-moves"
    ]
  ],
  "name": "chess-notation.x402tookit.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:137",
      "eip155:42161",
      "eip155:8453",
      "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
    ],
    "category": "",
    "description": "",
    "domain": "chess-notation.x402tookit.com",
    "endpoints": [
      {
        "description": "Material balance from a FEN: standard 1-3-3-5-9 point totals per side, difference and piece lists.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
            "group": "query",
            "name": "fen",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Chess Notation Tools",
        "tags": [
          "chess",
          "material",
          "balance",
          "fen"
        ],
        "url": "https://chess-notation.x402tookit.com/material-count"
      },
      {
        "description": "Squares a knight, bishop, rook, queen, king or pawn reaches from a square on an empty board, with the count.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "knight",
            "group": "query",
            "name": "piece",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "d4",
            "group": "query",
            "name": "square",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Chess Notation Tools",
        "tags": [
          "chess",
          "moves",
          "knight",
          "bishop"
        ],
        "url": "https://chess-notation.x402tookit.com/piece-moves"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "chess-notation-x402tookit-com",
    "integrationType": "",
    "isNew": false,
    "name": "chess-notation.x402tookit.com",
    "networks": [
      "Base",
      "eip155:137",
      "eip155:42161",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.02",
      "currency": "USDC",
      "maxAmount": "0.02",
      "minAmount": "0.02"
    },
    "provider": "chess-notation.x402tookit.com",
    "providerUrl": "",
    "serviceName": "Chess Notation Tools",
    "tags": [
      "chess",
      "material",
      "balance",
      "fen",
      "moves",
      "knight",
      "bishop"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"cee72b3d5cfce00a1bc9a3a8fa5d1dd46b7ea3d2dea2217127d6f1cc59ebd9f1","id":3959630,"kind":"listing","method":"sync.agentic_market/1","observed_us":1794076215451584,"prev":2190046,"subject":"agentic_market:chess-notation-x402tookit-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x6ab8899d132aecfcf1af581c85be28b38a949b9bfa686e627f753c7654e93089
2. 0xc9767086ef29aa7cbad3ff61f342abc05007f098a49007ac93d2a831f26acee5
3. 0x7f1ea4e3926b8367c068cdfe8fd48fb2fe0dc5aec794b6b70e9259ae6c2e8d63
4. 0xc4f2b50a516ba1077f22c7886fb96676a43872da300f027ffbd4f0de5ee426f6
5. 0xe4e5c4cb93215c80af0604b67bfd4a2eb244ef5cadac296fa7b21d99b62637ae
6. 0xfb09a3f35aed58a07617f27e22e7abf03c417ef1f240d79d8855e97d125151de
7. 0x56963bbdc191b297a384821c88ea640b0775505abe51628134ccda63efbcb2ce
8. 0xd4d6b8dc7e172cb3b2f97d3b6149f1aff01ae52b184292f216dbeef517f16d22
9. 0xbd87807b322684d3edc5ace8ae094efe3cc6f8cfae9f123804c7894570b5c01c
10. 0x4f17bc4ee94aa493db0ece2bb19ad76466deb65db589ad148e2bade8c5dc98be
11. 0xe760c51ad5d84253d68c1196dfd4213d9b6a7ab9d23974b3b7a37736139fa30f
12. 0xfaa6d3b2121bd049ccbf27f88a83d49d00cd01b9d118f9c36b6a0c45779d5b5b
13. 0xe5801f2d98f2783a9d774362088619c8104163c840e21fbf269ac5c455e9df78
14. 0xe10968763bf5f376ed7bef52309abc0adc0394947582477a2899a3f332842d95
15. 0xdda41bf8f8b807884588170276b0203d24918e4a5c47ba7f4d5d0217f85e0cf7
16. 0x9108c80d13a11b7549b554924410a7c5d215a2cd03aee9659ca627cb099f1a2e
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa