Evidence row 558353

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": "2026-10-27T20:45:30.518Z",
    "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":"63e162c3ba80dfdcaf76a36f7d984c01b5d86895eac1955c2f8ad70d9a8c9279","id":558353,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793134973790477,"prev":547663,"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. 0x7b79a56717bc1ad6994eb2ce878cc65471e379bb4124b86afeea4801ec971753
2. 0x127e81696f59839e2bbe65d8dfb5209ad84016bfffa5b0ee1558d4e822a5f707
3. 0x18d640fa6effc2fd5919cf91d30989efa1284b7db6593b3bebf5dbdacf8eb4a6
4. 0x96fc302e32bc2331b83313668b4a175584e84b61eeed659f0ea585f26e263e84
5. 0x7d6de59f0e1df76e6c67e82235f4f6f04b43159f09835fc727c82d10b2d765d5
6. 0x23a127a67a4bf2d716d71eff62f0c59acac48895acfc6ac71856c2f90a189858
7. 0x5a53650679137b469f4ea1ff7bff9ddb51e438f34bb8447f9dac2d7c9daf75fd
8. 0x2ca7ad03ccbb0405e03225ad26e8e346ed2f60dc2f86928264db542d84c9fa2c
9. 0xd5ec4d3a50aaaa867261ff7b431a74d7c3d292e405260f1ed18318c09e1e32c2
10. 0x7dd3f687b0ad4363a3dbdbd52e7f46ad9d425ee75eb439e90516eb43f30d8ce9
11. 0x5fc4b0a456927c5c4428f8a799b89307f1fd731fdb306738036ae0bbf1f21fd8
12. 0x98815e62072eb9319b52d9744169ae17850c056887ffbb325e7f2f9ed317a6a0
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4