Evidence row 1504054

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": "95",
          "l30DaysUniquePayers": "5"
        },
        "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":"2177a1b871692c5e54fb43bb69cd5304b4d10b081f59719c03195496eeff3a45","id":1504054,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793470668813893,"prev":1259190,"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 2026-10-31 (246033 rows).

1. 0xf08e5b015605d6f1f0035dd48dd805496aa2c77b13cfe7a31edb6b3206f3607b
2. 0x5edc798a183c77cea0b90668fed424761f500a8ab421cdcfd2e638d3ffa5bb20
3. 0x2a2c1b5cc41c7bdcb8f92dd5f2c9b3febf7dd92da1dfd71137c89ed42d98e08a
4. 0xb884c015ca76ecfe135a2a178847fe9659e9e9e577d380c59f7c9c0ffe85990b
5. 0x2ee91b981c0bd288a363bb29ab7a1e957d53514e9c89c265af1306da3f1ddee0
6. 0x37acc52aa8a59f761ceee6cb9250475a05f3792256753a02a1c6dc27758b34ea
7. 0x7f3a10a2939d0a4e031071d7a300dbe58e1261a094588cd075e204523dc15c20
8. 0xc2ca3581684bc30be74199c223991fb8467bb672b019f5dfb35786bfc7c6235e
9. 0x10730ae6383ec29e8e32979212d820b35e0d979e360d35d0e9d79f812dd1bab1
10. 0x663e1cff4a93e6e9d86b814ee5ed4d8453e91b86f4230a09f80432f3efbfb42a
11. 0xe7360308ab32aef50b75636ab17e2dd1289f3312baad753d1c7cddcdf8df9bf8
12. 0x58a34939b4c8e722f8158244e479f5a4c90cb23cd7d81af7f52ef740f26522b2
13. 0xbc3e5daeb8c4525fe47bcc0da1546eab6297e135ec75acdf3bc8177600a63e27
14. 0xb9926eb0976a5b473833dada1e63c048bf8ef05dbd747135d29c85140274baf8
15. 0xe9e97d8cdaf19b6da06606a22b4eea548063df6bacb661abea4c37aa637b5c3b
16. 0x4befbbd74452b2a3a89b7e1e809ba011f1be78aeb8153059503fda47c454d086
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0