Evidence row 298487

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/read"
    ]
  ],
  "name": "Tabularium",
  "owner_address": "0x951bd91ad61d2d867f21b54d2f717d8fff4ad28a",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:84532",
        "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": "2026-10-26T21:56:38.432Z",
    "quality": {
      "lastCalledAt": "2026-10-26T21:28:43.974Z"
    },
    "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":"1cd26a81342f6ac8b39bb86c031bd75866b3df2408be35bd4432fd94f61f206d","id":298487,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793052594960950,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x0cfba5a709032d0f8ce8291e1c8374e11caad9be98ea17d975a9b9631b152c74
2. 0xac70b3875028e0ea787b5a2702647aa2e2ad93caed937dc0216c46fed8af947c
3. 0x0999854383df58b15a103f0dcf13546431d2286bbe3ee7c966efa5186f05bb04
4. 0xfd4b6bf323c1554c47e10d0baa8c3235f57539f09f1640f0b3a75505d51673ca
5. 0x9c210d7cdaddbf3a9094f18de206c2dd411186dec0ecf0541af2cc829a8ed8f2
6. 0xa4f773732fda74624fdaf18d80d398f613476419fea6101598c3b6da29c14584
7. 0xceded72aa791cbe066442546b492c34e17e2a05bb63da639cd8c0a47646fd8b9
8. 0xff763a7641551f6ddb28957b2ee5aae704665f36ab85a1da6db3ac9903f8ab92
9. 0x5e1a3aef10dac9eae11675ae26e350165e9c6aa5619c1cd34dcab2a806ec5785
10. 0x7df9268e3c799b09f6f61ac8a493750625b19546a343d4f6c00812722a4e4de6
11. 0x1dd760089997f06dc5264f791d622a6e7eaf78f6daa715333a752d033cdb2e03
12. 0x362683225b724b8d2d652a95968c57a6f4199ed4f2ad60900fc3603492f17520
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae