Evidence row 749986

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.losbeto.xyz/commodity-price"
    ]
  ],
  "name": "Losbeto Market Intelligence",
  "owner_address": "0xd5ba9711a3d052846a3695c70e7fcb8b3168fe7d",
  "raw": {
    "accepts": [
      {
        "amount": "12000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "requestId": "1a55b36cec61",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
          "requestId": "1a55b36cec61"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "GEhr9HCFTRDjanMg435frSgCVwVZYpNoPrEkmNBnFHFE",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "31566704",
        "extra": {
          "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
          "requestId": "1a55b36cec61",
          "tag": "x402-global-challenge"
        },
        "maxTimeoutSeconds": 300,
        "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
        "payTo": "MRVA6OABPQJNJ2WFUHFY57FMJXHBV37IU665MXRJX4JYBIWGACP3LSDUF4",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "requestId": "1a55b36cec61",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
        "scheme": "exact"
      }
    ],
    "description": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with daily change. Multi-source with declared provenance in every response. [Wrapper over a free public source (Yahoo Finance (public...",
    "extensions": {
      "bazaar": {
        "dataFreshness": {
          "cache_ttl_s": 60,
          "live_data": "≤3s from source",
          "preview_data": "≤15min delayed"
        },
        "description": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with daily change. Multi-source with declared provenance in every response. [Wrapper over a free public source (Yahoo Finance (public...",
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "symbol": "GOLD"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "change_pct": -0.38,
              "future_contract": "GC=F",
              "name": "Gold",
              "price": 4022.9,
              "provider": "Losbeto/Commodities",
              "source": "Yahoo Finance",
              "symbol": "GOLD",
              "ts": 1793058771,
              "unit": "USD/oz",
              "version": "48.34.1-GUARDFIX"
            },
            "type": "json"
          }
        },
        "inputSchema": {
          "properties": {
            "symbol": {
              "description": "Asset ticker, e.g. AAPL, TSLA, BTC, GOLD",
              "type": "string"
            }
          },
          "required": [
            "symbol"
          ],
          "type": "object"
        },
        "naturalLanguageDescription": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with daily change. Multi-source with declared provenance in every response. [Wrapper over a free public source (Yahoo Finance (public)) — you pay for one schema, one payment rail, signed receipts and monitored uptime.]. Tier: discovery. Live via x402 or credits; free delayed preview via ?preview=1. Auditable on-chain settlement; Ed25519-signed metrics.",
        "pricingRationale": {
          "notes": "Aligned to x402 ecosystem median (~$0.028/call). Premium tiers reflect multi-source aggregation cost.",
          "price_usdc": 0.012,
          "tier": "discovery",
          "vs_median_x402": 0.43
        },
        "provider": {
          "name": "Losbeto Market Intelligence",
          "url": "https://api.losbeto.xyz"
        },
        "ranking_hints": {
          "category": "discovery",
          "primary_tag": "Commodities",
          "unique_selling_point": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with d"
        },
        "sampleQueries": [
          "GET /commodity-price?preview=1  # free delayed sample",
          "GET /commodity-price  # live data (returns 402 with payment challenge)",
          "GET /commodity-price?symbol=GOLD  # with parameters"
        ],
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "queryParams": {
                  "properties": {
                    "symbol": {
                      "description": "Asset ticker, e.g. AAPL, TSLA, BTC, GOLD",
                      "type": "string"
                    }
                  },
                  "required": [
                    "symbol"
                  ],
                  "type": "object"
                }
              },
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "description": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with daily change. Multi-source with declared provenance in every response. [Wrapper over a free public source (Yahoo Finance (public)) — you pay for one schema, one payment rail, signed receipts and monitored uptime.]",
                  "type": "object"
                }
              },
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        },
        "tags": [
          "commodities",
          "globalmarkets",
          "gold-oil"
        ],
        "title": "Commodity Price — Losbeto",
        "useCases": [
          "market data input",
          "AI agent research",
          "systematic trading"
        ]
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790529703/bazaar-icons/b104f2f7df1a4ce6.png",
    "lastUpdated": "2026-10-27T00:06:31.692Z",
    "quality": {
      "l30DaysTotalCalls": 78,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-27T00:06:31.51Z"
    },
    "resource": "https://api.losbeto.xyz/commodity-price",
    "serviceName": "Losbeto Market Intelligence",
    "tags": [
      "commodities",
      "globalmarkets",
      "gold-oil"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live commodity prices: gold, silver, WTI, Brent, copper, natural gas (?symbol=GOLD) with daily change. Multi-source with declared provenance in every response. [Wrapper over a free public source (Yahoo Finance (public..."
}

What the leaf hashes

{"body":"c5f68ea094eed7732ded0236156a6d747d8b083016bd5bb6be887037004e9224","id":749986,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178669980116,"prev":547204,"subject":"x402_bazaar:https://api.losbeto.xyz/commodity-price","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x5260906a3c3c5c0a8cc986023ecef098041d04dc877d503ec829d292fb637f40
2. 0xd3d3298dd807877b5f5529cb30d60a8725df1c081c82f60f0c3f06cb71c9f7fb
3. 0x43eb3742b3489a5bc5208b6c07a4ab8dca8af24f2c7c8da52bcab37d9f52f0bf
4. 0x431aa53b285d28f0a7a59b90ff1819505faffed1c4adf4a1e1660056cc3900fe
5. 0x62165642d9465e368371d59f0cd6bbce9d49c47f8d4fabfa49ab9ede6f1fab42
6. 0x054dd0686d0a7209848b0bb0842af903556a1f8b0789440f878f6f0ac79b18b7
7. 0x11da9b4c6fba9d33568faae8c81b7667a5da36e079d5846012dba004f72010b7
8. 0xebe9b0661c033cff8261009cc6975921efd8aa8071ffa64ad55e237fd7765d08
9. 0xacfe662cab7da193240bbc3997449ddc13c52c8e2fc5b86919c185df54254cad
10. 0x00c80f7c0ff039f52960635f91c5d2fde0697da85da812404d4938ab25517bb6
11. 0x400f822b9cba07335a206851168ddbcc4c86611b90ef49a077684e4d24ba4046
12. 0xeb6be17d47f2eefd90b40b490d16cb428c7e6888bb98b04a9d68663dc014c921
13. 0x7d1829083dbabe39994f2d5687f99b5933bed73cd0300562b3af1bb8f3d94388
14. 0x4a3671cf60fc2b873faa04c5863043b075336ef59080ef23af50811e899402d0
15. 0xd12637e9c035a4c3a66d0f0436dfc7bf3f13da4d17ea045b647d9e9beef1ef11
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae