Evidence row 66571

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.hergertsynthora.com/v1/stablecoin-supply"
    ]
  ],
  "name": "SYNTHORA",
  "owner_address": "0x6d9f318463168ff637b50e5b9a21392e97c7c167",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiLlama), no API key, timestamped.",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "10000",
        "maxTimeoutSeconds": 300,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0x6D9F318463168fF637b50E5b9a21392e97c7c167",
        "resource": "https://api.hergertsynthora.com/v1/stablecoin-supply",
        "scheme": "exact"
      }
    ],
    "description": "SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiLlama), no API key, timestamped.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "USDC"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "niche": "stablecoin_supply",
              "ok": true,
              "receipt": {
                "alg": "ed25519"
              },
              "result": {}
            },
            "schema": {
              "properties": {
                "error": {
                  "type": "string"
                },
                "niche": {
                  "type": "string"
                },
                "ok": {
                  "type": "boolean"
                },
                "receipt": {
                  "type": "object"
                },
                "result": {
                  "properties": {
                    "as_of_utc": {
                      "type": "string"
                    },
                    "fuente": {
                      "type": "string"
                    },
                    "latencia_s": {
                      "type": "number"
                    },
                    "stablecoins": {
                      "type": "array"
                    }
                  },
                  "type": "object"
                }
              },
              "required": [
                "ok",
                "niche"
              ],
              "type": "object"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "input": {
                      "description": "SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. ",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "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": {
                  "niche": {
                    "type": "string"
                  },
                  "ok": {
                    "type": "boolean"
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "delivery": {
        "behaviour": "if the service FAILS (invalid input, timeout, stale cache, withdrawn product, malformed output) you receive 402 and are NOT charged",
        "note": "unlike the signature -- which you verify BEFORE paying -- this one is checked afterwards, on-chain, from your own wallet",
        "order": "compute -> failure gate -> verify -> settle -> deliver",
        "policy": "no-charge-on-service-failure",
        "scope": "this covers service FAILURE, not verdict quality",
        "verify": "after a request of yours FAILS, check your own wallet on Base: no USDC settlement to our payTo will exist for it. If we had charged you, the transfer would be public and permanent"
      },
      "signature": {
        "alg": "ed25519",
        "canon": "json:sort_keys+separators(,:)+ensure_ascii+utf8",
        "envelope": "{result, attestation:{alg,pubkey,sig,canon}}",
        "jwksUrl": "https://api.hergertsynthora.com/.well-known/jwks.json",
        "publicKeyUrl": "https://api.hergertsynthora.com/pubkey",
        "sigEncoding": "hex(64B raw)",
        "verify": "recompute canon from envelope.result, then VerifyKey(bytes.fromhex(pubkey)).verify(canon, bytes.fromhex(sig)) -- no name to trust, verify the signature yourself"
      }
    },
    "lastUpdated": "2026-10-24T15:07:39.45Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T15:07:38.538Z"
    },
    "resource": "https://api.hergertsynthora.com/v1/stablecoin-supply",
    "serviceName": "SYNTHORA",
    "tags": [
      "defi",
      "x402",
      "synthora"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "SYNTHORA stablecoin-supply: circulating USD supply, price and peg deviation in basis points for the top stablecoins (USDT, USDC, DAI...), with a depeg alert flag above 50 bps. Optional symbol filter. Free source: stablecoins.llama.fi (DefiLlama), no API key, timestamped."
}

What the leaf hashes

{"body":"ed046f9e40fcc4333189dce8a14fad7e7b5033b1ad14403f4f7f02250f4742db","id":66571,"kind":"listing","method":"baseline/1","observed_us":1793025460812035,"prev":null,"subject":"x402_bazaar:https://api.hergertsynthora.com/v1/stablecoin-supply","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. 0xba80e099f08757a796130e71faa517c0c2f2d967d90faa565ddddb35a452e448
2. 0x2f8ace82b39f87f8a026276a6ed7dc0d627ce7a35c1812faa4d848fac328d210
3. 0x900f2aecbbe18bfdafba24f453e35d24e6214cefd52c1be01a6481b484ee10fb
4. 0x0d4eecf7153c8e2b5fa9242dcc5495dbd15aa92fc17292ca635b0a629dc7a4db
5. 0xe86af889a959a5f2561c10e6f36ab187afb8efd260f33d6f9368b8e1e3a9936a
6. 0xed5c80e897bef50328ec69f66b6ddbde40e515385f8bdf35092f5a3d48f0d97b
7. 0xdb11947467b64a81252fd5725d1fb437a6f013f37663affee3eef76f741b7e40
8. 0x939ce1b22fb7c6635e6806484d318d30a97eb76037d9a7bb80f55b70d08593ce
9. 0xa3b937c188a609b7564c8f2de88764789b220f44e51b26391dee764dc7bd3a77
10. 0x5c670c369e4461ebb756b60e4a7c2b61bacd5db31fcc3315d727acb3845358d5
11. 0xd2fc7e774aa4a9259d0eb5e076abdaa36417d3853be0f8ff34d37acaa77db477
12. 0x1a61f9ab4a9304db8146c466be341271a345718ebf06b718e0f0dd9f347d2fbd
13. 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae