Evidence row 425253

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": 50,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-27T05:02:00.814Z"
    },
    "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":"2a04bb2ea2a02bc2b2b9e1ba59cd85eb1850becf802d515b4f32fb0428bb1b69","id":425253,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086108687010,"prev":407457,"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. 0x84fca6b5ce577e86a14b51b6706cab2f63749eb31caaeba85587e15402ea1275
2. 0x59bf155f50776bdcad0094d4ee5cd1edc9718d5bf0d9aef1aff01dfb8e63fa0e
3. 0x0dbcb5231a32bc9716cdad7d174cec4c96e967554a58cab395225a8628f4d69b
4. 0x549a0c779dadcb4ebf58c9398fe5e1f9aca241db2773ddd17ef4b5d9f2741ddd
5. 0x2aad0efb23dd686bd2a45ee949b31d7a5249c1ad2c5badd40217e32a32994c8c
6. 0x0b4a4d34d21062c25a26561822d555cb812b6dae107d960a6c7277bd36701856
7. 0xd0d022823ab30ec4e6e2133c720d90ce1dd32a90fd0082f8365e355f71ec0893
8. 0xa377379a13741c7306c094521903c6f2d11f47ad45c6dbdbee73cc5e2d8cd427
9. 0xf9a785e7cffd9f0b8606a4450cdf5ff7b68b323f1d5899c43062fadc7025ef31
10. 0x3c150bdbbad54aa1b426f50030643b1678b77c1b17e9e75364dede347df698db
11. 0x94b5117661526893571c5099bb213b21f54068dc9f381d688b9be7c593a99d91
12. 0xe5ce8ac1ba4d6152605e0a032058cac5906d85f82e3fda1ad44852337b713b17
13. 0x07d414626f116f3edc6ddb34183ed02538c3a805fec6db00f9d764f8fd595d04
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4