Evidence row 424869

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/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": "33",
          "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": "50",
          "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": "6",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/renew"
      },
      {
        "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": "67",
          "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": "0.06625",
      "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"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"c1572031309f20da9ff1ade2a4a3305d72e2d7afc4a6091fd543410067399766","id":424869,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793086094877880,"prev":407085,"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 2026-10-27 (273461 rows).

1. 0x972f91ff6043f5860673c247a6fa25c2aebb8b6e81b2b138aa2932b26d7e6f6d
2. 0x246161ff3f0ea8db7bd34e2bd99022e22fcadc51bdc3028a57f02efb244c2a43
3. 0xd1add0033439ac1b7bb7f6966de5f785d56a14b9a75d3f79c485f1eaa227d0e1
4. 0x6e6293d321cbbb35e76c7a181cc5dcaf830878ff7e60e1db6b1b0fdaf765d7bf
5. 0x5247cc5e96d7aacb3f4a206eeee594ccbfe4b97ca062deef319a6f87fb99dd03
6. 0x6093ab1cdb63261c3175a4b820b3e03b6e9b01f61308286169f3cfc7a6cc94ba
7. 0x5d4d7b84633d48341b2de2f6ab3a8a4cdf3a16df94535a0322a31777a1305a64
8. 0xcef20e0dfd394d83e9bd8e84023e84ebc73dc9c3c0072ef37163857a52e260db
9. 0xb086e415896e4dd3a1369f147c13a108a47a6c19e84e34a75c7b8d73184f6393
10. 0x939c20d16b8086131ee97b0a4b8177753df6f49c348110ea2571ba8658870e98
11. 0x008b7f9614ed50ebbebac08462aadeadf211fd774ab0e22a1da87f5080a43505
12. 0x265cee5401cfadc89cfe40c27cc910090736b6a94b8d688bb7729f0791087d26
13. 0xfe6d2e9a468b7e99de9162a2ef30ac0b0e3b318387b4356bf524493aa67b295b
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4