Evidence row 72915

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://cryptofeed402.site/spot/:symbol"
    ]
  ],
  "name": "cryptofeed402 spot ticker",
  "owner_address": "0x93e4b468a88b1f084efc781ec7a1e2d195a40d22",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x93e4B468A88B1f084Efc781ec7A1E2D195a40D22",
        "scheme": "exact"
      }
    ],
    "description": "Live spot ticker for any OKX <SYMBOL>-USDT pair (hundreds of coins): last price, best bid/ask and spread in bps, 24h open/high/low and change, UTC-day change, 24h volume in base and USDT, with as_of. Use it for a quick cross-venue spot check of an asset that has no perp. Unknown pair 404, no charge. JSON. Free sample at /samples/spot. $0.002 USDC per call on Base.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "symbol": "BTC"
            },
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-23T16:11:53.176Z",
              "ask": 104.62,
              "bid": 104.61,
              "change_24h_pct": -0.02,
              "high_24h": 105.25,
              "last": 104.62,
              "low_24h": 103.03,
              "market": "spot",
              "open_24h": 104.64,
              "pair": "SOL-USDT",
              "spread_bps": 0.96,
              "symbol": "SOL",
              "venue": "okx",
              "volume_24h_usdt": 49570747
            },
            "type": "json"
          }
        },
        "routeTemplate": "/spot/:symbol",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "symbol": {
                      "description": "Spot base ticker, case-insensitive (BTC, PEPE, TON, ...)",
                      "pattern": "^[A-Za-z0-9]{1,20}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "symbol"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "ask": {
                      "type": "number"
                    },
                    "bid": {
                      "type": "number"
                    },
                    "change_24h_pct": {
                      "type": "number"
                    },
                    "high_24h": {
                      "type": "number"
                    },
                    "last": {
                      "type": "number"
                    },
                    "low_24h": {
                      "type": "number"
                    },
                    "open_24h": {
                      "type": "number"
                    },
                    "pair": {
                      "type": "string"
                    },
                    "spread_bps": {
                      "type": "number"
                    },
                    "symbol": {
                      "type": "string"
                    },
                    "venue": {
                      "type": "string"
                    },
                    "volume_24h_base": {
                      "type": "number"
                    },
                    "volume_24h_usdt": {
                      "type": "number"
                    }
                  },
                  "required": [
                    "symbol",
                    "pair",
                    "last",
                    "as_of"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792293388/bazaar-icons/98767f120c2f6858.png",
    "lastUpdated": "2026-10-23T16:35:52.501Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-23T16:35:52.168Z"
    },
    "resource": "https://cryptofeed402.site/spot/:symbol",
    "serviceName": "cryptofeed402 spot ticker",
    "tags": [
      "spot-price",
      "market-data",
      "okx",
      "ticker",
      "trading-agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live spot ticker for any OKX <SYMBOL>-USDT pair (hundreds of coins): last price, best bid/ask and spread in bps, 24h open/high/low and change, UTC-day change, 24h volume in base and USDT, with as_of. Use it for a quick cross-venue spot check of an asset that has no perp. Unknown pair 404, no charge. JSON. Free sample at /samples/spot. $0.002 USDC per call on Base."
}

What the leaf hashes

{"body":"9094637df4a4b08d7938485d5c98273a319d10072c81877759d09cacc2eed207","id":72915,"kind":"listing","method":"baseline/1","observed_us":1793025486818291,"prev":null,"subject":"x402_bazaar:https://cryptofeed402.site/spot/:symbol","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. 0x7f0ad7ba2fde46ec101a8320cb6f9c9f0a49e1ccd776160185dba0fdc92155f2
2. 0x95fd6a7efcab0116f8e95c4c5b488861f3211812e368cc05c69f833def40dba4
3. 0x2229245bc61adec7f0c0514ebb0b88fd72088e7e8769dc3a3e9cda24a7afa921
4. 0xb00a882f29b1b56687d41178d71963ce4c3e3f3d875c617cc1a2a958a0833512
5. 0xb39f914717bf2a3ae0d3ee64e7495496ad44ae7c0662e2092b41579b214cb642
6. 0xed91d7e18b6611170c7b3a802b9bc90f6b412d73cf70b1d4293beb59344d69dc
7. 0x21ac7cfb5a2f6cee0a3f92a838937869646b52b92507a6fe5558c4c4c3e5922e
8. 0x9d50d6d0278a86398a10fd341959c98fef10a2dc950a39d60f530a58986d0100
9. 0x73fd4a237a0f3d67fd5a662dc540e200ad081e567f1d604d231e1404ae13d75e
10. 0x75fb43d121b0c7d36d6ce3843de524bb5cde5e31bd50964f1eb46e9e4d22df1f
11. 0x86993f34ffd04a19214c4b442a83218e78811798750015024990bf574868d9e8
12. 0xab729e4203b650f2a3c15efd6fd44eb2482232373bc1de662fd9d496869eb2d3
13. 0x0bffb634300aa5609bddaa79e8d31d7cde36c0a5a4465472f809b9f5287e40d2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae