Evidence row 751166

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": "2026-10-27T21:59:05.186Z",
    "quality": {
      "l30DaysTotalCalls": 67,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T21:59:10.205Z"
    },
    "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":"ac2587cbfccdc307ceb73e5ca5932980a4a07c48375ebe6539ece7639f87a670","id":751166,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178705105660,"prev":558354,"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 2026-10-28 (231336 rows).

1. 0x35873489a9c368e1c01bdd0b5238d10f2b2b211585887c0c5794264deee2af1d
2. 0xf63e9e6de3a6b88cf4e72d3945c1bc44dc62aee998364c28ccda4dd39aadbe6c
3. 0x3dadfa82ffe8ce18ccaf8a5539bdf51c6e16debeeea29b6522cb108be9434388
4. 0xc7f3bf93fc97f029901c43c343ef4a37a009c57e93aaaef6904a29441500b5ee
5. 0x8148a6225dfdedbcd10ce1cb4df1380d74ecabe4e8c15dd6fbfcd3bb87bdb152
6. 0x668390d78cb8592e9662a6a59b31bb6114b4f0b8bd4bd78922389827fee7b796
7. 0x12cfae68645fc16841f598cc653a693e0e8c8147badb2c5c7717d9af376ff526
8. 0xb71e8ead56beb7bb17635b63a71d1c29582639c6acd3d1f607503b78eacbb13c
9. 0xac126bc8df2edd6a5933671ee2700b2ed60f41ccba9cab0938d2e52cd8c290a4
10. 0xef7610c538d2d91d313723fcc561987d36952b6e3c798ace2b132cade302f659
11. 0x99e8264b99b45ed3e07fc3a68997dc5fb64f7e6ed8cdb5827224d12db739215d
12. 0x7507b360b17505c4197fb7d72731d075fed685fd145a0763f8fcad3207ed9a25
13. 0x3d9df6153e051ebcdc2683b4402faae304acff7f1f03a085bddf9ad34187f068
14. 0xa96695bb231e3cabeb4f03cab216cc6730b71e2304bf5be1e6c0447ea577aae6
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae