Evidence row 3971144

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://hk-cm-kg.ai/api"
    ]
  ],
  "name": "hk-cm-kg.ai/api",
  "owner_address": "0x0bfd52ea41841d0f1121399167bfe36781d40ebb",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "One paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://hk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "10000",
        "maxTimeoutSeconds": 300,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0x0Bfd52Ea41841D0F1121399167bfE36781d40ebB",
        "resource": "https://hk-cm-kg.ai/api",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xB2000000000000000000002fEb517dFeC7415344",
        "description": "One paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://hk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.",
        "extra": {
          "assetTransferMethod": "permit2",
          "name": "OpenUSD",
          "version": "1"
        },
        "maxAmountRequired": "10000",
        "maxTimeoutSeconds": 300,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0xF516E2C54C7cDb5b34857fa35278259ff24fC8bF",
        "resource": "https://hk-cm-kg.ai/api",
        "scheme": "exact"
      }
    ],
    "description": "One paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://hk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "statement": "the surface's record of record",
                "surface": "hk-cm-kg.ai"
              },
              "receipt": {
                "amount_usdc": "0.01",
                "receipt_url": "https://hk-cm-kg.ai/x402/receipt/{nonce}",
                "settled": true
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {
        "info": {
          "description": "The facilitator accepts EIP-2612 gasless Permit to Permit2 canonical contract.",
          "version": "1"
        },
        "schema": {
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-04T04:37:54.97Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-04T04:37:51.845Z"
    },
    "resource": "https://hk-cm-kg.ai/api",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "One paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://hk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/."
}

What the leaf hashes

{"body":"8a0728dd54b2240e3be1bdfa0671785f1eaba8e40c2b6195d139972db5e10837","id":3971144,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083687340435,"prev":3768209,"subject":"x402_bazaar:https://hk-cm-kg.ai/api","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x521ef5e15c5bf0a677bacbe0a992539add1c929bc5750f429ad0c9fafe216621
2. 0xd7c289aafff8e73e1592b7659a452a4e1bffc6608322dd6b5e1ef6af7cc9022d
3. 0x9bd82b544faf12712911d1ef6c634a1150f0e887a6fe11ffbee3ded80b9452d0
4. 0x8a64e4c737ef4aa49deab987a2b8c6e1032c29d295aad44ecc2fec3302f2acd0
5. 0xba94a6011549532ed3e2b3651812b00553dcdadf29f72efdf664c87867d141a7
6. 0x5d1eee45797930a4eacffabd188fed0363c0f49df0d42766157e8d84eb2b3826
7. 0x10e2ac7229d54d2caf4de335c3c9d700edda7f1f5dd29485f00de52a98537f6f
8. 0xdefff2b4307f8fb3d141c7dd79b1d8a684b9860e67133ab01968de8b71626ddf
9. 0xc1b3db5c96cffd4a6cbb790e19192bdd7c88e31410a3609b3489cdcba33525d9
10. 0xceb6d182321fd60669ae5b77c9f08a90bf9d08a0f5bd992f4d9434c320ba95ad
11. 0x8227afc251b839c63f77d3946406e6ee61001f9e42a53844d7982c89360c6762
12. 0xc9c30027da6a1f08b5b880f5e0e6b8705017580d111e182bf33863e42bb0dfbb
13. 0xc4120aeb12547f09661af6703e81437a23bd38ba065b3075f70bd20e35771d53
14. 0xd65824e287abd80d02260ba918668ef1c4c1d016243891677bfc31ebb1eb16e7
15. 0x1440bd4864ece4f3cb1a2fc48e88ddbd78cefd359ae16ceeb69a13e36b55021a
16. 0xf0a56561418cd0342a328707933cc222d8fa725efff7ffd081e0226ee8c46c0b
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa