Evidence row 407457

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/read"
    ]
  ],
  "name": "Tabularium",
  "owner_address": "0x951bd91ad61d2d867f21b54d2f717d8fff4ad28a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x951BD91AD61d2D867F21b54D2f717D8FFF4aD28a",
        "scheme": "exact"
      }
    ],
    "description": "Latest value for a key in the paying wallet's workspace, with its chain entry.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "key": "notes/today"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "entry": {
                "hash": "<sha256 hex of this entry>",
                "key": "notes/today",
                "op": "write",
                "prev": "<hash of entry 2>",
                "seq": 3,
                "ts": 1790000000000,
                "valueHash": "<sha256 hex of the value>"
              },
              "expiresAt": 1792592000000,
              "key": "notes/today",
              "ok": true,
              "state": "active",
              "value": "Met the supplier; follow up Friday.",
              "wallet": "0x..."
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "key": {
                      "pattern": "^[A-Za-z0-9._:/-]{1,128}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "key"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T05:01:45.996Z",
    "quality": {
      "l30DaysTotalCalls": 35,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T23:24:19.001Z"
    },
    "resource": "https://tabularium.matt-3e0.workers.dev/read",
    "serviceName": "Tabularium",
    "tags": [
      "agent-memory",
      "storage",
      "verifiable",
      "hash-chain",
      "key-value"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Latest value for a key in the paying wallet's workspace, with its chain entry."
}

What the leaf hashes

{"body":"4d50ffca1333722fdbec2cfb7456d4fd2938c5caa3816973e01067e518b1034b","id":407457,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080248871554,"prev":298487,"subject":"x402_bazaar:https://tabularium.matt-3e0.workers.dev/read","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. 0x7b48556847dbb9727b73b7927a75efc780287089760419e3fee1db4af83b8fc6
2. 0x3d4203c4a91f7ee5219c1f096a0057c1fe7fa77a15c792d768041b82e077d220
3. 0x70c34dc8e3b31ce96899d2ab4a83768a8c27d61db62b1d163740b87fa1584985
4. 0xad7ace57ec5131015e72984727129956835296dee208fbb5acf963ecab2fa23f
5. 0x6e57a487ac239e90f9ae25edf63fe80f6d742d306fc9616ba679018e04ac0391
6. 0xca4db8e4c2d173c7149468060ad766e90fcb58870e4e6a933ca9d1f67d80798f
7. 0x6b0f76c528b356f2b94fb7ed19e6ff202b4f3f15b00f1527d7140a5760045c5c
8. 0x82d38667424838dc6f0456b7ea197c3e2f199bf44c15b3a157cb67a80e781b89
9. 0x357af4e2bb1e45d1ef125a53cc7db2b7668224743f63b90b329525d916a4452e
10. 0x7dd3f687b0ad4363a3dbdbd52e7f46ad9d425ee75eb439e90516eb43f30d8ce9
11. 0x5fc4b0a456927c5c4428f8a799b89307f1fd731fdb306738036ae0bbf1f21fd8
12. 0x98815e62072eb9319b52d9744169ae17850c056887ffbb325e7f2f9ed317a6a0
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4