Evidence row 451928

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://perp-gap-api.perpgap.workers.dev/quote"
    ]
  ],
  "name": "Perp Gap API",
  "owner_address": "0x2d82dcb9cc3a168d9ab25b62c1e33e278a51254f",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0x2d82dcB9cC3a168d9Ab25b62C1E33E278A51254F",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "5MoL8HNnvZUogGrqiF4T1StmAUpdU7ERA2GUJ7gLrEja",
        "scheme": "exact"
      }
    ],
    "description": "Use when an agent needs the best live price for a stock across venues before trading. For 1-10 tickers: perp mark and mid on trade.xyz (Hyperliquid), Aster, Lighter and OKX, xStocks and Ondo token prices per share, last US close, the session reference price, gap % vs it, cross-venue spread, best bid/ask and freshness. Unpaid calls get 402; bad or unknown tickers get 400/404 before any charge. Errors: 400, 402, 404, 502. Data, not advice.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "ticker": "NVDA"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-22T21:41:01.558Z",
              "last_close": {
                "date": "2026-10-22",
                "price": 212.21,
                "ref_vs_close_pct": 0.316,
                "source": "yahoo"
              },
              "perps": {
                "aster": {
                  "ask": 213.19,
                  "bid": 213.17,
                  "index": 213.1046,
                  "mark": 213.1046,
                  "mid": 213.18,
                  "symbol": "NVDAUSDT"
                },
                "hyperliquid-xyz": {
                  "ask": 212.85,
                  "bid": 212.837,
                  "mark": 212.86,
                  "mid": 212.845,
                  "oracle": 212.89,
                  "symbol": "xyz:NVDA"
                },
                "lighter": {
                  "ask": 212.993,
                  "bid": 212.972,
                  "mark": 212.981,
                  "market_id": 110,
                  "mid": 212.9825,
                  "symbol": "NVDA"
                },
                "okx": {
                  "ask": 213.17,
                  "bid": 213.16,
                  "last": 213.17,
                  "mark": 213.16,
                  "mid": 213.165,
                  "symbol": "NVDA-USDT-SWAP"
                }
              },
              "reference": {
                "age_s": 14,
                "kind": "after-hours_last",
                "price": 212.88,
                "source": "robinhood",
                "ts": 1792705247
              },
              "sources": [
                "hyperliquid"
              ],
              "summary": {
                "best_ask": {
                  "px": 212.85,
                  "venue": "hyperliquid-xyz"
                },
                "best_bid": {
                  "px": 213.17,
                  "venue": "aster"
                },
                "cheapest": "hyperliquid-xyz",
                "consensus_mid": 212.9413,
                "consensus_vs_ref_pct": 0.029,
                "cross_venue_arb_bps": 15,
                "perp_mark_spread_pct": 0.141,
                "richest": "okx",
                "venues_quoted": 6
              },
              "ticker": "NVDA",
              "tokens": {
                "ondo-gm": {
                  "multiplier": 1.0017152487959895,
                  "per_share": 212.9,
                  "price": 213.2652,
                  "status": "postmarket",
                  "symbol": "NVDAon",
                  "underlying_price": 212.837895
                },
                "xstocks-solana": {
                  "liquidity_usd": 2852537,
                  "mint": "Xsc9qvGR1efVDFGLrVsmkzv3qi45LTBjeUKSPmx9qEh",
                  "multiplier": 1.0009180758490996,
                  "per_share": 212.3166,
                  "price": 212.3166,
                  "symbol": "NVDAx"
                }
              },
              "us_session": "after-hours"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "ticker": {
                      "description": "Stock ticker, case-insensitive (free list: GET /catalog).",
                      "examples": [
                        "NVDA"
                      ],
                      "pattern": "^[A-Za-z0-9.]{1,12}$",
                      "type": "string"
                    },
                    "tickers": {
                      "description": "Optional alternative to ticker: up to 10 comma-separated tickers.",
                      "examples": [
                        "NVDA,TSLA"
                      ],
                      "pattern": "^[A-Za-z0-9.,]{1,130}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "ticker"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "description": "Error responses are JSON {error: string, hint?: string}. 400 bad params (never charged); 402 payment required; 404 ticker/market not listed (checked before settlement, never charged); 502 upstream error. Full field docs: /openapi.json.",
                  "properties": {
                    "as_of": {
                      "type": "string"
                    },
                    "last_close": {
                      "type": "object"
                    },
                    "perps": {
                      "type": "object"
                    },
                    "reference": {
                      "type": "object"
                    },
                    "sources": {
                      "type": "array"
                    },
                    "summary": {
                      "type": "object"
                    },
                    "ticker": {
                      "type": "string"
                    },
                    "tokens": {
                      "type": "object"
                    },
                    "us_session": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:11:11.77Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T07:13:39.683Z"
    },
    "resource": "https://perp-gap-api.perpgap.workers.dev/quote",
    "serviceName": "Perp Gap API",
    "tags": [
      "Trading",
      "Data",
      "stocks",
      "perps",
      "tokenized-stocks"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use when an agent needs the best live price for a stock across venues before trading. For 1-10 tickers: perp mark and mid on trade.xyz (Hyperliquid), Aster, Lighter and OKX, xStocks and Ondo token prices per share, last US close, the session reference price, gap % vs it, cross-venue spread, best bid/ask and freshness. Unpaid calls get 402; bad or unknown tickers get 400/404 before any charge. Errors: 400, 402, 404, 502. Data, not advice."
}

What the leaf hashes

{"body":"995266df51d3df22277659c0ad6e971d52cce8a9bee40fea33edfcc9a4ced6b4","id":451928,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100515767152,"prev":118473,"subject":"x402_bazaar:https://perp-gap-api.perpgap.workers.dev/quote","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x497ee2cb2a9b657b14584ab9d1e38b8fbc3e6950557854dca15af1fd5fc65bfa
2. 0xfd5a072b55db029a428f5b160d6949e51dc093fd1e724c1e425443c5069fe512
3. 0x20f3670b6dbfec7e293486a393e1f2c62d741b8c2065f8b96abe47e701a17d75
4. 0x2c1da93c8629e0612279591d5ecf8828742cef18d77d5d15e9ec50d1890fbecc
5. 0x256c1aad48e2ab750af432e90b5a139c45751ded595222639c0ff731c306a40e
6. 0xf6b42ab6fba74eac1c4c953ceb1a42a7772d69fc6cff5142fd43522dda5664ff
7. 0xadfed9ec06a26e304055f8dbed2bfea99b36404387c6a948f3b9df19e49d33dd
8. 0x9be1707995e4d3504262a5f7af28a3b33ef132fbc3b9c534feacf5c744753d0b
9. 0xc35903fbd81144ca0e95f31bfd45af448a14a9f676edcf4efc228b2f08c35b72
10. 0xa1f401b0c1aa499980430f67810c758c114bb9ec037661630bfa5ea89a4ed860
11. 0xf38b609ad597fce93b27c195650b896689a01ed74ab6b03ca25db0fce3815293
12. 0xa6ea35fd4950cdcd8e7e5b8dcbb37883deca6fa621672fcdbde7ee38017f71bb
13. 0x150dc531eedad3837a4be47dd0bf1a84bf98feb63216c125982425fda525a3fd
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4