Evidence row 118557

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://plainchain.appin60.com/v1/x402/echo"
    ]
  ],
  "name": "plainchain.appin60.com/v1/x402/echo",
  "owner_address": "0xb442dacae60c07bb5db8f33c8a6c1572d8f24e83",
  "raw": {
    "accepts": [
      {
        "amount": "1042",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xB442daCAE60C07bb5dB8f33C8a6c1572d8F24e83",
        "scheme": "exact"
      }
    ],
    "description": "Debug your x402 client on Base mainnet for $0.001: returns the payment payload your client actually signed and sent, decoded: version, header used, scheme, amount, validity window, and whether it echoed extensions.bazaar (needed for Bazaar cataloging) and resource/accepted.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "advice": [],
              "amountAuthorized": "1042",
              "checks": {
                "bazaarExtensionEchoed": true,
                "headerName": "PAYMENT-SIGNATURE (v2)"
              },
              "extensionsEchoed": [
                "bazaar"
              ],
              "network": "eip155:8453",
              "payer": "0x...",
              "scheme": "exact",
              "x402Version": 2
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "required": [],
                  "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": "2026-10-25T20:39:56.27Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-25T20:39:55.644Z"
    },
    "resource": "https://plainchain.appin60.com/v1/x402/echo",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Debug your x402 client on Base mainnet for $0.001: returns the payment payload your client actually signed and sent, decoded: version, header used, scheme, amount, validity window, and whether it echoed extensions.bazaar (needed for Bazaar cataloging) and resource/accepted."
}

What the leaf hashes

{"body":"383b29ea0f2557a2190c7ae12752ec4470f439c203b40054a22f63d24dc54adf","id":118557,"kind":"listing","method":"baseline/1","observed_us":1793025613427826,"prev":null,"subject":"x402_bazaar:https://plainchain.appin60.com/v1/x402/echo","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. 0x0412958eb7cca972bf787f67355f6ff40465256954a489d97f65e02c3b709962
2. 0x2f6a6c6a054ec0eb10bde60b11cc8c8473a811f92743b2885f6a0ea32dae20de
3. 0x069fab8dba88f6e27d02e0e16721264d34658abcd96eea4791d9249fe92c5ecb
4. 0x8c100ae5d01b5ff90edd97b5ef509182aeb8e268dcbb3889e09d4d0693234896
5. 0xa175fc3450bc45bd16726d56689b2f934dd33e74bccaed37b0d91bbc185bc84f
6. 0xdcd16a51c26224fcdbda2edd6df1acc68dcddce4128c9798ac16cc6a4e777043
7. 0x4682b02f57be95806ddd66f61a7ab5ed27a530de5461e247d964211ffcf15844
8. 0x59ce2c0a0339e7340ba5fe737b811d5a00af63230c9980e0eed6619c1bd2b708
9. 0xd78e00fa1d778becb725175fd7f00b0f161a35f4a02784eb7f7e1d11bd776a02
10. 0x28efbda3043fe0ad6931419f72618781ad3b289c046ef258b300ab314d01bde2
11. 0x0dadbaadc61f6ee6be4586a11afb533e54da3f5fef5c8ec2ecba1bfa573ce6d3
12. 0x23033d81d9f4be06225e4276d276e0e8e02abc173d156a1b9a8fd5e4803ad199
13. 0x610fdf3e989af0a6b4a400a3a8aab9156d757f8c96efe4e9d0594dfd04de1cc0
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae