Evidence row 2241667

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://markt.halowerk.com/options"
    ]
  ],
  "name": "HALOWERK marktwerk",
  "owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
  "raw": {
    "accepts": [
      {
        "amount": "8000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "asset": "USDC",
          "assetTransferMethod": "eip3009",
          "eip712Domain": {
            "chainId": 8453,
            "name": "USD Coin",
            "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "version": "2"
          },
          "name": "USD Coin",
          "network_name": "Base Mainnet",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
        "scheme": "exact"
      }
    ],
    "description": "Reads the public option book summaries of Deribit and aggregates them per expiry. iv_atm is the mark implied volatility of the strike closest to the forward, averaged over call and put, and the strike used is named. term_structure lists iv_atm against days to expiry. put_call_ratio is reported twice and never mixed: once by 24h volume and once by open interest. open_interest_by_strike and key_strikes show where positions actually sit, above and below the forward. max_pain comes with the complete",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "underlying": "BTC"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "expiry": {
                      "default": "naechste",
                      "description": "naechste for the nearest expiry, an exact date as YYYY-MM-DD, or alle for every open expiry.",
                      "type": "string"
                    },
                    "moneyness_range": {
                      "default": 0.3,
                      "description": "How far strikes may sit from the forward to be listed, as a fraction. 0.3 means plus or minus 30 percent.",
                      "maximum": 1,
                      "minimum": 0.1,
                      "type": "number"
                    },
                    "underlying": {
                      "description": "Underlying. Deribit lists crypto options for BTC and ETH.",
                      "enum": [
                        "BTC",
                        "ETH",
                        "btc",
                        "eth"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "underlying"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T15:07:18.759Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T15:07:18.561Z"
    },
    "resource": "https://markt.halowerk.com/options",
    "serviceName": "HALOWERK marktwerk",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Reads the public option book summaries of Deribit and aggregates them per expiry. iv_atm is the mark implied volatility of the strike closest to the forward, averaged over call and put, and the strike used is named. term_structure lists iv_atm against days to expiry. put_call_ratio is reported twice and never mixed: once by 24h volume and once by open interest. open_interest_by_strike and key_strikes show where positions actually sit, above and below the forward. max_pain comes with the complete"
}

What the leaf hashes

{"body":"5aebb001ebd1d4a20e8dc775af29da7f176b8f2f6d52e8ec5ed15033b0111e3f","id":2241667,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793647629613745,"prev":null,"subject":"x402_bazaar:https://markt.halowerk.com/options","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x369a6da4dfef9c1189a907604dafe51c3f47bbd0d005deb4f21f1862734689fa
2. 0x0a22ab5f71318c1a7ae49c4ace6b80bc52b432c0fd08dc19b30f1b98d4e3b2ac
3. 0x4eeb7ca2d3df1019953c842dcbc50323774e780f3c0018108f0937ac16d4cb49
4. 0x5ca734cde27beb2a3fa8fc3f9645ae00d8f2d0ac62107d72a664a3bac8ee665f
5. 0x90e3061da09894e1d624e58f68f3d282a16ae56ec1f7528cb1269c94e2d13be8
6. 0x5e35db2437ecdfbfc52aa47198de7e275c640cea53b17fd349b7765437abb76c
7. 0x64521003327403ad1bf42ac156557231fc832cf10e0fe630567c1afaeba93356
8. 0x7308a942eba2211f0f49084fd478a80381b77cc42d90da8cbdb61202f8a96446
9. 0xf2d7dd8a327c4ec55172d651bc94549208663579a95aeac371ccd8eaa431d90f
10. 0xd5a193bc735da49c52b7ac1ba337e64263c6f8e6e7b501693c1fd907e46a1153
11. 0xbbc3ba117939999fb474e22af0bc8e761d629e3ce88e75d37ff20c53fabc3b2e
12. 0xf2afd692f9ecc84d8043fb7e2199fc37af44471368455fe6d2ad7651f20ae534
13. 0xa0e5887b42201f4bffeb4ff69bd41372cabcdfc84eaf669d71bc4550864cf581
14. 0xeda95b8bf6c7d0b27dc5b32d6a6006255f41e0f6bbe80842a49daa792f4de811
15. 0x464ce6fe060d0a6c4e810b71501e55084086148f7daf393caa14462b1a777022
16. 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
17. 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af