Evidence row 750584

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/export"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/read"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/renew"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/snapshot/fetch"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/write"
    ]
  ],
  "name": "tabularium.matt-3e0.workers.dev",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "tabularium.matt-3e0.workers.dev",
    "endpoints": [
      {
        "description": "Full signed history and current values of the paying wallet's workspace, verifiable offline.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 0,
            "group": "query",
            "name": "since",
            "required": false,
            "type": "number"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "48",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/export"
      },
      {
        "description": "Latest value for a key in the paying wallet's workspace, with its chain entry.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "notes/today",
            "group": "query",
            "name": "key",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "67",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/read"
      },
      {
        "description": "Extends the paying wallet's workspace by 30 days from the later of now or its expiry.",
        "method": "POST",
        "parameters": [],
        "pricing": {
          "amount": "0.25",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "8",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/renew"
      },
      {
        "description": "Returns the page's readable text plus an Ed25519-signed record (final URL after redirects, fetch time, status, sha256 of the body and of the text) that verifies offline. Charged only for 2xx text pages; refused URLs cost nothing.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "https://example.com/",
            "group": "body",
            "name": "url",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Tabularium Snapshot",
        "tags": [
          "web-fetch",
          "scraping",
          "verifiable",
          "signed",
          "citations"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/snapshot/fetch"
      },
      {
        "description": "Append a value to a private, hash-chained workspace owned by the paying wallet.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "retry-7f3a",
            "group": "body",
            "name": "idempotency_key",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "notes/today",
            "group": "body",
            "name": "key",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "Met the supplier; follow up Friday.",
            "group": "body",
            "name": "value",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "90",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/write"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "tabularium-matt-3e0-workers-dev",
    "integrationType": "",
    "isNew": false,
    "name": "tabularium.matt-3e0.workers.dev",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.054",
      "currency": "USDC",
      "maxAmount": "0.25",
      "minAmount": "0.002"
    },
    "provider": "tabularium.matt-3e0.workers.dev",
    "providerUrl": "",
    "serviceName": "Tabularium",
    "tags": [
      "agent-memory",
      "storage",
      "verifiable",
      "hash-chain",
      "key-value",
      "web-fetch",
      "scraping",
      "signed",
      "citations"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"f710b0e93638b2cca080759c02f7b76a72e3c1b902ef5f94a32ce00ce1ec4a95","id":750584,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793178683989382,"prev":547595,"subject":"agentic_market:tabularium-matt-3e0-workers-dev","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x6c3674bd02688b00ee43f4fffc26b6bdc9f99badee3d41764a159141a9d8260b
2. 0xc8e69e32bd7430058f57a2b76ce631f208b8fbfdb3e4bf8da5183e2f923efe05
3. 0x1074e390308eda186b1a70350ab9d6457dfb0fc73a4a6df3332a72d0b15a8fe3
4. 0x50d8f1f33529903cfa4e4b583c978038bf0eaa7b050c4e1f68b8cba09bfd4592
5. 0xef49d0132867abdc9babbcf4a14ed6a5e05a555a4e5fc2cf5bbc50d59c0d61eb
6. 0xe9973c2e58954359a6598c7640b488ef8af18c791ad5b562ebd29ab89a8c0c67
7. 0x4db9b04b4d5e5c7a1cc009427e1e147a226a46961a2a968147467e39415fe313
8. 0x49035ed84b5b0a3603408e1eee475fb79e081b51a989dda03973c14642656850
9. 0xa4308c3bba4cc5e93d0fd5d2aae6bc878d00f6712395cfb145d2f3cb016e2e9d
10. 0xcde6ab5be1daef1bc4bdbef6472444d0a27876b3d720aae872be56c6dcce8f1d
11. 0xe41388208d64ac28fecdff79c7cc50bbb41ac0b13babfea658504aedeec03594
12. 0xa5dc8bde09a0592357df20e8407be89c2531fc0bf17e0d5a15a0464d79e7bf90
13. 0xc0e02389eb414c04a7dc9b6703be98601510da00046cf6f744adbfe5e43bf146
14. 0x9629b9515160844aacc33a6aff292bbb444ac65e0d773f2fa899885c3481fa54
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae