Evidence row 524648

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/price"
    ]
  ],
  "name": "offercheck",
  "owner_address": "0xb9721fdd2ec85f7f604f5bbca2292d7c4ff6b62c",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xB9721FDD2EC85F7f604F5BBcA2292d7C4ff6B62c",
        "scheme": "exact"
      }
    ],
    "description": "Current prices for cryptocurrencies and tokens by symbol (btc, eth, sol, usdc, ...), CoinGecko slug, or on-chain token address on Base, Ethereum, Arbitrum, Solana and 100+ chains, using DeFiLlama's aggregated DEX/CEX pricing with a per-asset confidence score. Quote in USD or any ECB fiat currency. Up to 25 assets per call. $0.002 per call.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "ids": "btc,eth,base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "vs": "USD"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "fetched_at": "2026-09-25T20:53:41.000Z",
              "ms": 180,
              "prices": {
                "base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913": {
                  "confidence": 0.99,
                  "decimals": 6,
                  "id": "base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                  "price": 0.9999,
                  "price_usd": 0.9999,
                  "priced_at": "2026-09-25T20:53:20.000Z",
                  "symbol": "USDC"
                },
                "btc": {
                  "confidence": 0.99,
                  "id": "coingecko:bitcoin",
                  "price": 83819.24,
                  "price_usd": 83819.24,
                  "priced_at": "2026-09-25T20:53:20.000Z",
                  "symbol": "BTC"
                }
              },
              "source": "DeFiLlama coins API (aggregated on-chain DEX + CEX pricing with a per-asset confidence score)",
              "vs": "USD",
              "warnings": []
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "ids": {
                      "default": "btc,eth",
                      "description": "Comma-separated assets: symbols (btc, eth, sol, usdc, usdt, bnb, xrp, ada, doge, avax, link, ...), coingecko:<slug>, or <chain>:<token address> (e.g. base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Default btc,eth. Max 25.",
                      "type": "string"
                    },
                    "vs": {
                      "default": "USD",
                      "description": "Quote currency: USD (default) or any ECB fiat code (EUR, GBP, JPY, ...)",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:10:23.628Z",
    "quality": {
      "l30DaysTotalCalls": 10,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-27T10:10:23.463Z"
    },
    "resource": "https://offercheck.offercheck.workers.dev/v1/price",
    "serviceName": "offercheck",
    "tags": [
      "finance",
      "fx",
      "exchange-rate",
      "currency",
      "crypto"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current prices for cryptocurrencies and tokens by symbol (btc, eth, sol, usdc, ...), CoinGecko slug, or on-chain token address on Base, Ethereum, Arbitrum, Solana and 100+ chains, using DeFiLlama's aggregated DEX/CEX pricing with a per-asset confidence score. Quote in USD or any ECB fiat currency. Up to 25 assets per call. $0.002 per call."
}

What the leaf hashes

{"body":"06fae19ad56fae5cc766ab0355f61e8bd0692706b5b2fdabb29aa88a3596c276","id":524648,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124740391309,"prev":450919,"subject":"x402_bazaar:https://offercheck.offercheck.workers.dev/v1/price","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. 0x4dbddba0a9dbf44a10cc0d5f6b5cea436d6bf366c760bef7070181e833d4131d
2. 0xb5df3f8c589b19347ef3832c43d93a6f3701c65c11e14619094a5742c979470f
3. 0x13debbb8ad43da6a4aad5d9091a0e823ff1196d4665e0121462c5cd6f951c3bc
4. 0x2560cd6738495e03dc97630e09c50a4f4ff3d60ef8933275901d6510f09fbcb5
5. 0x42bbfe7439e5f33cf594884e6460371af6d9156c36a149fcd53441f7523fa330
6. 0xdc4545b618a10bfa581319e1f2443e60b8cb39200e5ad8beb136b785b079fca9
7. 0x97baef5de8bcc3cbe104e3ceccf9d9c57d29c2e63771c466e2a76c2204723f72
8. 0x24574a6d81a3d4474b4f0d5590b51e5bbd8d7a0af04aaf0b1209f2d03ff36bfc
9. 0xdb8af7bfd2b14f85c782e0d2022bf60e6f0c975ec2b8f2ac21b06460ece52a52
10. 0x913c69c9ce597ae69f8c91e4f0aa01b9327ece7dbec1e3e6473754028a34c109
11. 0x699e1831216ceb5d0324397f8f4f58989765f950328c8adcbcb3a202d688993c
12. 0xf9b21ec258212225fc012a1ed6399d0ec608e930f4423d2badb8be79550861ef
13. 0x797da99476c7ebaa971607ae725e5e240b79de9e49d28859b94de107c850aaab
14. 0x9ea0c6a53f80a30b6f13671109f98a000cf98e581875129f4be4b57131d06364
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4