Evidence row 15707

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": "4e8da74255d1",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xd5Ba9711a3D052846a3695C70e7fcb8b3168FE7d",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww",
          "requestId": "4e8da74255d1"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "GEhr9HCFTRDjanMg435frSgCVwVZYpNoPrEkmNBnFHFE",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "31566704",
        "extra": {
          "feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA",
          "requestId": "4e8da74255d1",
          "tag": "x402-global-challenge"
        },
        "maxTimeoutSeconds": 300,
        "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
        "payTo": "MRVA6OABPQJNJ2WFUHFY57FMJXHBV37IU665MXRJX4JYBIWGACP3LSDUF4",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "requestId": "4e8da74255d1",
          "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": 0.27,
              "future_contract": "GC=F",
              "name": "Gold",
              "price": 4018.8,
              "provider": "Losbeto/Commodities",
              "recommended_next": [
                {
                  "endpoint": "/macro-calendar",
                  "price_usdc": "0.0700",
                  "why": "same category as /commodity-price"
                },
                {
                  "endpoint": "/br-macro",
                  "price_usdc": "0.0500",
                  "why": "same category as /commodity-price"
                }
              ],
              "source": "Yahoo Finance",
              "symbol": "GOLD",
              "ts": 1793024660,
              "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": "2026-10-26T14:27:54.517Z",
    "quality": {
      "l30DaysTotalCalls": 82,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-25T12:59:13.38Z"
    },
    "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":"2bf8d7c2728e491db0c78a11224496fb21cc32d01a6eae65738aae42117213c8","id":15707,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025320734941,"prev":null,"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 2026-10-26 (296695 rows).

1. 0xe1524ab6bac1fe87fa8308a1aaa92f1062e0ed8a50d2c409b56b8a9ced43e9c5
2. 0x638874c9829cbea939ca9ba3c8a24e906ef944eaade28099fd99f70f336e3fec
3. 0x8afd6fbee2e75cb5202e0b5ddb79c2dc646cf2d1f64b6fd0b6ba6f4f3cbe158c
4. 0x0e02edb5cc25dfc3344ae6d2a1190b3cfac108a504f4ca3bf0f4c9c75c0d27ee
5. 0x39aaac86b7a7d603e2d67a3cf75364cd931fb6c48c6a3e570d1b7618a06522c1
6. 0x688bcff573af65d9e0fc36c05dc2506b9de4ba6140f7164eb6cfc955ea86495a
7. 0x51bf7ecc3c6be476fa2042d30a72f3fadb619b90a0036a516ee9e42118ba4855
8. 0xff96377938c41ab084afb4a2bdfe929b35e9106170f9604c1c01b956a7371ff8
9. 0xe63f8e4581859c67f54bf7aee4c4a0debf8404ddbf6dd1964ec000823c4caa23
10. 0x4b514c272cf743fead7500e2a90fbbb62a667f67d8a586fb32ddc4f005077e2e
11. 0x82d0a2528274b883dc22fee84985c9c34404274baadfb76651d0008598f80bff
12. 0x714c96bd488ccf4af927c8bc83397404f7f6f1b165b622d0e8216290209825e4
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae