Evidence row 751290

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.presenceoperations.com/services/carry-cost"
    ],
    [
      "x402",
      "https://x402.presenceoperations.com/services/execution-cost"
    ],
    [
      "x402",
      "https://x402.presenceoperations.com/services/liquidity-risk"
    ]
  ],
  "name": "x402.presenceoperations.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "x402.presenceoperations.com",
    "endpoints": [
      {
        "description": "What it costs to hold a perpetual position: the venue's current hourly funding signed for your side, projected over your horizon in your own units, with the mark-to-oracle basis, open interest, and the assumption behind the projection stated rather than implied.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 8,
            "group": "query",
            "name": "hours",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "BTC-PERP",
            "group": "query",
            "name": "market",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1000,
            "group": "query",
            "name": "notional",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "LONG",
            "group": "query",
            "name": "side",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "7",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://x402.presenceoperations.com/services/carry-cost"
      },
      {
        "description": "What it would cost to execute a given notional in a given market right now: size-weighted fill price, slippage from the touch in basis points, and whether the visible book can absorb the size at all.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "BTC-PERP",
            "group": "query",
            "name": "market",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 1000,
            "group": "query",
            "name": "notional",
            "required": false,
            "type": "number"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "BUY",
            "group": "query",
            "name": "side",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.0048",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "10",
          "l30DaysUniquePayers": "7"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://x402.presenceoperations.com/services/execution-cost"
      },
      {
        "description": "A liquidity-risk profile of a perpetual market, walked from the visible book: absorbable notional at four slippage tolerances on both sides, spread, book imbalance, top-of-book concentration, open interest and day volume — with the visible book's limits stated on every response rather than implied.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "BTC-PERP",
            "group": "query",
            "name": "market",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.015",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": null,
        "serviceName": "",
        "tags": [],
        "url": "https://x402.presenceoperations.com/services/liquidity-risk"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "x402-presenceoperations-com",
    "integrationType": "",
    "isNew": false,
    "name": "x402.presenceoperations.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.009933",
      "currency": "USDC",
      "maxAmount": "0.015",
      "minAmount": "0.0048"
    },
    "provider": "x402.presenceoperations.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": []
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"30d7778af37a1b0513f4038d616fd67f38b530021c3bb7b21951636c7dc1e16b","id":751290,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793178746491015,"prev":4547,"subject":"agentic_market:x402-presenceoperations-com","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. 0xef3b465769e3d19df53358851133dcd04ae1f908291a3eb30f6e642c8a60649c
2. 0x90663fd82961bf94f45861bfaf508bd665b15dd2ab311c2d532377877dddf064
3. 0x41b4e72b885cf9df293ab15d8c86b1393a32ded6e53eb95fa6ad0f3582a92097
4. 0x1dd7786061ff7ca473dd66cd40a8a73b4c294a1a10bd245309b8eaa8e1a41ee0
5. 0x7279aca87ecabbb9586a69ad66f4f9e991d56bed9bc7bb9d1a758cb79e51ef4e
6. 0x1081f1bbb0fb6ce4b2dd22fb9f49d83acf3348eea722004833c3e92ca6ad286a
7. 0xc0cef3877ee790748ad544ddd71d63fba4fe1c52721f6d2586227cc3d28451d1
8. 0x683cfee2417f851b649d6c322c075b5ff154b2bc0f04db60b571e39a083f734c
9. 0x6c618b9dbf72b61eece30f48e024cdf098b198f73c68811723b577f5f74cc565
10. 0xc9d71f1c877c5caa27a09ef6afed23a0d08727d25ecb75fc16ac0a577adc3ec6
11. 0xe2b694cd210ad43c1eba274309908cc1d47fbf23f118e26484faac76b0f862e9
12. 0x20179cde505821813c2d635df6658dedf9c5dac9aa60296802366454e3b0de3b
13. 0x7c7680a693651307890c3f1e37c63eee03c1c637cfe36c210695030d5edb22bc
14. 0xfb2274fa79452c1e494276a3ee3eadb7c66f76a08a80f6923416f3d591053e02
15. 0x33bfb51cb957137510d8a1502cd50241c4c0982e2741290f3b8f2d2b1e69de70
16. 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
17. 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae