Evidence row 1038061

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": "5e360ba9-0a7f-4272-a3ba-69ec22491c50",
          "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": "a9647e3c-3a18-496a-976f-ff7757c22041",
          "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": "2026-10-29T13:20:02.727Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-29T13:20:00.859Z"
    },
    "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":"8fff1885ea8e51dfd7cacc5136b8053ccef5137b8dccae8c65f6d9f32fcbb6bd","id":1038061,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793298249812374,"prev":13739,"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 2026-10-29 (242798 rows).

1. 0xd64e5e71379e47ba46d1092cc32d29eed2900bc0fca6f24687443bd557b4e8da
2. 0xc9dc0968a786027258c59f004a74cb27a25f69e61dcd5675d7e8bebd41b9067b
3. 0x07faa389c39cf43d4d9d2ae29136b066f29e8a8be561a71a0f4125819ffa91ba
4. 0xdbb2e2598a74529a9fa071ecd278e720ffe1a8fa36e77ac132b0377ab5e84a39
5. 0xa94eb7682d070eac75be099505d84fc1fe78f5b66f80ceeb6eeaa713fbc6c4e5
6. 0x49f8c8dd7fc77ec4d0fda0ae4a6aebe733fb76ef21960a83db39fdd2ac4e450b
7. 0x474a3aa15d719ab71197fc598b58f5d924b8b497010381c4b928106c5378d629
8. 0x0864201d2b8778e5f61bcd1e3915088142fb00149f960fd66d39f41ac000372f
9. 0xf5f0ae724a92544b5d1933bab8602590454ba44b195d2cf6e493565d550275be
10. 0x3eea0178cff28ae6d140bf6ee48be2bdd1c69d0532e868a99c0033de2d46a065
11. 0xf1f5009d9e40b003e9b0788065cc580864e54453f26b33feec2d61603db5de93
12. 0x3733d7c697359c00475e755c4c6b73ba0c090f0cdd072407c97973821fdf2fb3
13. 0xfe28e9e98d6dfa695fe78aeee74c827cd30eb7ca9245a239277f9fb4e1ff47a1
14. 0xc5f320d911e4e74a5ef306d3473fe072ea90372c9b9d8902795503f6d18cc307
15. 0xa7d3fa0a08edea990614977b51a6b3289c357a88d8ca06dcbfe67415a017c0e7
16. 0xa034ebc8d117fbf1ed466b70baa0478bf213b743e1a41cba1d2da7a9f310184d
17. 0x1597ec94933260048e5e583aff1ad0fd44cc49efcd0a994091ed5db4924d7b02
18. 0xe01539ac4c9f9cdf265a9e5c6d99c8da11e70ff0c7175fb23e402d33b9d79785

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1