Evidence row 13739

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://app.heinrichstech.com/v1/cdp/echo"
    ]
  ],
  "name": "app.heinrichstech.com/v1/cdp/echo",
  "owner_address": "0xda2f35d283c42dd60b965322394bc658a5c1769f",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xDa2F35d283c42dd60B965322394bc658a5c1769F",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "EDtPHNFA6ofGQZPb8NYUxdTkqVwCfkWJzRCg8vQXkYBL",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "0.001000",
        "asset": "524C555344000000000000000000000000000000",
        "extra": {
          "invoiceId": "86329313-b7ba-41cd-80b1-a848d551a6d9",
          "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 120,
        "network": "xrpl:0",
        "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "0.001000",
        "asset": "5553444300000000000000000000000000000000",
        "extra": {
          "invoiceId": "64eac00b-777a-4a52-b50c-f87b903bdbb1",
          "issuer": "rGm7WCVp9gb4jZHWTEtGUr4dd74z2XuWhE",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 120,
        "network": "xrpl:0",
        "payTo": "rfryheo6yzFdLWj8qUQtZc7zG9MKkBkUEy",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "USDC",
        "extra": {
          "currency": "USDC",
          "issuer": "GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
        },
        "maxTimeoutSeconds": 120,
        "network": "stellar:pubnet",
        "payTo": "GCB5WZT5VCBBATGMQMTB6TLUXD6KQC6N5ITRWK3CCP4J3YOCE45FA2GO",
        "resource": "https://app.heinrichstech.com/v1/cdp/echo",
        "scheme": "exact"
      }
    ],
    "description": "BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.",
    "extensions": {
      "bazaar": {
        "category": "utility",
        "discoverable": true,
        "info": {
          "input": {
            "body": {
              "message": "hello bitbooth"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "ok": true,
              "payment": {
                "network": "eip155:8453",
                "payer": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
                "transaction": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
              },
              "protocol": "x402 + CDP Facilitator",
              "service": "BitBooth /v1/cdp/echo",
              "timestamp": "2026-05-05T12:00:00.000Z",
              "youSent": "hello bitbooth"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "message": {
                      "description": "Optional string to echo back in the response. Max 500 chars.",
                      "maxLength": 500,
                      "type": "string"
                    }
                  }
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "reference",
          "demo",
          "x402"
        ]
      }
    },
    "lastUpdated": "2026-10-26T08:41:28.902Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-26T08:41:28.435Z"
    },
    "resource": "https://app.heinrichstech.com/v1/cdp/echo",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop."
}

What the leaf hashes

{"body":"e3fac73ea51cf8246c4872a2f7c94672b08236e61f1a8697691164041ad005c1","id":13739,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025314816464,"prev":null,"subject":"x402_bazaar:https://app.heinrichstech.com/v1/cdp/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. 0xd099daef6a0cae63acbd0df6eb7f5c87efe22d74afda049420234eab260e600e
2. 0x0ea67df22526099fce1ca5717531a2f67b3de090b6324c532fc577039139f1fa
3. 0x9fab2a25e843cdf24bcef05ec238b8120f62fb8116def00362a2ff30cb39be8e
4. 0x29631a35afdc2db923008adc15c6fd9bbaaee3a40fd0161680e5ad3fb2a130c8
5. 0x3c5adf07057dc7301cb88ed1ddffde63344bc8205105da2b030416ba3a300669
6. 0xb0896ff3c986201bcd0b1ddc92b2740dd8f377076a89921b32e41821b86d666b
7. 0x62e0530b046d32f73ce35d33caa78702723e8d3be06b0c58b2fd9c304ff51ace
8. 0xbe257cfa38282bcfd3bff4167ec0da4824a855e3ae7cc6b7760029d6d75e2dab
9. 0xeaccd7df216687be1d30e02f09e186deace20c059309420f3ec59d08d3a4e608
10. 0x0b6cb706c8b3f325ee28e22acdd9550d5608845cb77ee7fa124320b9a4aad34d
11. 0x026c75973d292b16fc9c1aefff047e2e4656075d16803275f6ae428cf2826ee1
12. 0x3f401930661bff9a668037b662b5b8766fa60035f100a3e9fc585c576d892ffa
13. 0xe43762a621da83c0b4b63f549cd2e19c428ac702bfc1038d70233867b06c447f
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae