Evidence row 425252

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/export"
    ]
  ],
  "name": "Tabularium",
  "owner_address": "0x951bd91ad61d2d867f21b54d2f717d8fff4ad28a",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "paymentFlow": "upfront",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x951BD91AD61d2D867F21b54D2f717D8FFF4aD28a",
        "scheme": "exact"
      }
    ],
    "description": "Full signed history and current values of the paying wallet's workspace, verifiable offline.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "since": 0
            },
            "type": "http"
          },
          "output": {
            "example": {
              "anchor": "0000000000000000000000000000000000000000000000000000000000000000",
              "entries": [
                {
                  "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>"
                }
              ],
              "head": {
                "hash": "<entry hash>",
                "seq": 3,
                "sig": "<base64 Ed25519 signature over the head>"
              },
              "ok": true,
              "values": {
                "notes/today": {
                  "seq": 3,
                  "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": {
                    "since": {
                      "description": "Only entries after this seq",
                      "minimum": 0,
                      "type": "integer"
                    }
                  },
                  "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": "2026-10-27T05:01:46.396Z",
    "quality": {
      "l30DaysTotalCalls": 33,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T05:02:01.645Z"
    },
    "resource": "https://tabularium.matt-3e0.workers.dev/export",
    "serviceName": "Tabularium",
    "tags": [
      "agent-memory",
      "storage",
      "verifiable",
      "hash-chain",
      "key-value"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Full signed history and current values of the paying wallet's workspace, verifiable offline."
}

What the leaf hashes

{"body":"94eaa38a33036710d4e9279e0ad0649295bb39d40d8dfc0815ce7f50b8eb88f4","id":425252,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086108683715,"prev":407456,"subject":"x402_bazaar:https://tabularium.matt-3e0.workers.dev/export","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. 0xe1bb3dfc290ed62a650bce5b4f3a904d952520f5bd2f06bcfc4919ff87a5e46d
2. 0x5c8c3a0778889afb970aa7d80c8e28b9846bfeac05e6572f2b6fb1769bcf3276
3. 0x84726a273c8cbd259572a44e47d78827ffccdf11720f1451c583da44ecc1e185
4. 0x499bb23da9108d0bbd0df76b51a469c36d787d6304f3521b49b485baef3efc16
5. 0x14636b158f53673a6ba7fd2299a889f0efd944cabb0950bbb81c30aceb153f6c
6. 0x7530ba583e81cebc549de72ac61ac2e9c6065fd76a01b06cbddf530b41862fc2
7. 0x7c10d38b63d71d3c9f2611f55f989d62d842287b14649334e8a7dfbf8639d671
8. 0x8e059fe622cccc4fc8e398277c77f77cb5a30fb9849babf8e9369f598b0ea7f7
9. 0x9e0086b9cc6c9b6829e3caeef40185ce48a092d2e4850cf2244ba6296166db3a
10. 0x55eaaf6949d63fa523ab5efe46c4d908d90b9c2e2a90b5b5d1fbcff2b418e7e3
11. 0x685edc20eef134e9053b5f48e92fbcfdce3625c2c28f68c4ec9232819c669574
12. 0xa7bf7b9cc7b39dca708cf0cc5d77059435823b975a1b485d07bbb69188527cb0
13. 0x979156f4f0a1ab811055c0a4d2b45bfa74d4bef619c176540454ee8d15e5bebc
14. 0xf72dee7a0c7534cb19ede4959b957b00c0a8285c36ad49dd2ce1c1092bf60d93
15. 0x24e3e2bb8ee1e8d20756de35f0e0c4ec8eb1f193bd2cf3f077ee1f92f211c34d
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4