Evidence row 407456

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": 23,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T23:24:23.268Z"
    },
    "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":"e9cbe947a8325fa40fe97a849b64c1f8708fee8763c6c4cfd8878d457d50f9a0","id":407456,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080248868715,"prev":298533,"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. 0x26b5f51a43c7cff6d7688a8b7b424b236475b0fa46c04066c6819c8541464bd3
2. 0xfea6f1dd1c6fcc6d8d86d2a8dbdc46623ad82d1433eaa0a93e78ed312c2f4770
3. 0x966fda40c1dc52bf9346bac5335583feca15fe20d4bbf60e304f593dc7f132da
4. 0x8fe172f33a5f9fefcea09deab56cb9437d40e57de9094aec8f46eac77eec6548
5. 0x3d3ea23aa5235909c1ba06fc68e503216760ac66f5af055b33027a8ef8a4463c
6. 0x098f87008b33e51870c721b212794bc257587353bea373366d04d4491cf4a259
7. 0x34e9611896c2bbbb129cf0d8a8255760aac197fdbdba18038dc063100bf39ec6
8. 0xe1308ffb800e2228b989df4599ecc67807b6d2b25f781a695ba4db1b71173da2
9. 0xf5ba6cb1b756aa2f5c127fabf9165d00ee78612515f5516efa306d5f1b51b09c
10. 0x67c253296696475c4c9b76279ba43f1e722b469325bba21b9bf24e7f9428d81f
11. 0xb74d1e1417c2953e5b3c2385126d77946e4effdefe4584289b6f7f7b0a99d30c
12. 0x442ef05dbe7931d22c60e72d459fdb2874e7d0eab89c16f41f0a865bf55610d6
13. 0x1a710d4f8e6092d584b581d8599ff9183c0008f9275cf0601c925b43b4e84ae6
14. 0xe8ee6f6ed50253c5ee2d1aa85a4b1a38ce94bca7f3b72fd1850f496152dbe285
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4