Evidence row 298533

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/export"
    ]
  ],
  "name": "Tabularium",
  "owner_address": "0x951bd91ad61d2d867f21b54d2f717d8fff4ad28a",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:84532",
        "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": "2026-10-26T21:28:48.308Z",
    "quality": {
      "lastCalledAt": "2026-10-26T21:28:48.308Z"
    },
    "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":"79e64590d6cefa3f4c454694dc51b1bff178063713c35b59e38c9042cc07d6f8","id":298533,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793052595785368,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x7fcb5b4ee998c5b783ea68c904dba629cd26a8738ecf64232279e592be4d49ea
2. 0x05332a19596a6fb0dee2b1190c2816a44afe9f23d13d339f8585d2a652ac7f40
3. 0x429703e48e8d7cdae2408045f53304ae73bf84d3393289ff27367e16912c6496
4. 0xc88803261120530a160abf7afac3668ad45b66686fd8cf0618bbacab3860b4f4
5. 0xc7207e16a0c4f881841f004b4fd285b6be715d7b61ea0afbd3a206ef8cdd1ff8
6. 0x0c5ccc6fb1cc682c69a2b10e915e0f913933288478c26a50d4e2f039dfeb66c9
7. 0xcef018a3856f4aa4538e5c9aed23552bbe96cd8b208b3b44e668192b4d5ea73c
8. 0x6ce1ee601d0dc277805776dbb8045502102da45d07ea2ce7f6f9b90643c403c3
9. 0x3633249228aebc9afb9d891c0a3bdcd8274006622c91dfba98f75689462ed7a6
10. 0x4ac6e7b8710a19dd69c1ac61f6e5bc5b40663b9f632b7d8a1515e0c4fc86564d
11. 0x94ff6a1838bb06ac09899310e3d37518c2cdbae79f32eb90e1b61eb995aed881
12. 0xb9c4107c5cbaf0844324e5ba287c90e0643bb7b9e48e7877adda9372132cf0ea
13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae