Evidence row 1791042

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://kronossignals.com/api/v1/price/eth"
    ]
  ],
  "name": "Kronos Crypto Data & Forecasts",
  "owner_address": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
        "scheme": "exact"
      }
    ],
    "description": "Spot price for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT) as a volume-weighted median across Binance, Coinbase, Kraken and OKX (2 s timeout per source): 1% outlier rejection, cross-exchange spread %, a confidence grade (high/medium/low) and per-source volume weights. A reference price, not a single-venue ticker. Optional coins= batches up to 10 symbols per call. $0.02 USDC via x402.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-01-01T00:00:00.000Z",
              "asset": "BTC-USD",
              "confidence": "high",
              "cross_exchange_spread_pct": 0.08,
              "data_age_seconds": 0,
              "disclaimer": "Volume-weighted median price from up to 4 exchanges. Informational only, not financial advice.",
              "outliers_rejected": 0,
              "price": 107500,
              "price_simple_median": 107480,
              "sources": [
                {
                  "exchange": "binance",
                  "included": true,
                  "price": 107510,
                  "vol_weight": 0.45,
                  "volume": 1200000000
                },
                {
                  "exchange": "coinbase",
                  "included": true,
                  "price": 107490,
                  "vol_weight": 0.3,
                  "volume": 800000000
                },
                {
                  "exchange": "kraken",
                  "included": true,
                  "price": 107500,
                  "vol_weight": 0.15,
                  "volume": 400000000
                },
                {
                  "exchange": "okx",
                  "included": true,
                  "price": 107480,
                  "vol_weight": 0.1,
                  "volume": 270000000
                }
              ]
            },
            "example_kind": "illustrative_schema_only",
            "example_note": "Placeholder values and timestamps, not market data.",
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "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": "2026-10-31T18:48:12.093Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T18:48:11.888Z"
    },
    "resource": "https://kronossignals.com/api/v1/price/eth",
    "serviceName": "Kronos Crypto Data & Forecasts",
    "tags": [
      "bitcoin",
      "btc",
      "ethereum",
      "solana",
      "crypto"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Spot price for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT) as a volume-weighted median across Binance, Coinbase, Kraken and OKX (2 s timeout per source): 1% outlier rejection, cross-exchange spread %, a confidence grade (high/medium/low) and per-source volume weights. A reference price, not a single-venue ticker. Optional coins= batches up to 10 symbols per call. $0.02 USDC via x402."
}

What the leaf hashes

{"body":"2dab43b63be65c70ef38d4aa2e2387b1cea52a08680dbb47cff69246c8f6c3c4","id":1791042,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939523229,"prev":1532336,"subject":"x402_bazaar:https://kronossignals.com/api/v1/price/eth","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x7e68ae46f3ee60b651459c27ce8617549a4d92aaa21f2f9dfe0738dce65cbf4e
2. 0xb422091614e75072916ecefca2171aae6be46512ee9a1e40f0b4cd4b072cb3bc
3. 0xcd0cda215055d8a5334137f9a6ad3bf9c7e29455d123e50d434b1b50336b2c00
4. 0xe7698ebbbbc96fb2f7fb5b5131e86075855b9a87c65c38246a0bc80285817b66
5. 0x1c534ca25f9e7574f53e3680048b86c10838682654012a4445f0a5706b559332
6. 0xc0e56f3da8ec8bd683b32ef1278b978a1e6377522203345b3606fac4da41fcdb
7. 0xba550df75f25145e4ffb1a235c7ac2abca2fb2dc8dbc141c78a17b306391e6b6
8. 0x4d49d8477b10a606088e58292089445d3aae57d1c3eae66fc6b2cd7da3028a1b
9. 0x5816189d2de22909b693a305a57fb55f6115bb80f4392af9a631ae579713a2fa
10. 0xdab16d3048f56219d35de96e28539de84929e67a6862892a1f42276e16777f10
11. 0x3a50b0bf1b117feb2a8b10ad9a37fdcf0c9d4c6468f0a98c396f3373427b5620
12. 0xbef89f30edf79e35d1e5c3609040274f03bf6b5037e6619fb8bba37e42ead800
13. 0x0d7168eda56f959819319294f2344abf3e83a06736c3ef37f9f274fd0bf74ed0
14. 0x19ce574eee56ae085b2ab0004d191db3debc9d29cba2d71de21a8710ca8151ed
15. 0x3950a937c3f98cedf9cbbc2f8905c10e3aac8ebc54b1e3468237d58bb254c496
16. 0xe329dbfb0db2c7f35334e66970a8ee37ee2d3356d34d692c10f84b6f7de65a35
17. 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90