Evidence row 126750

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.presenceoperations.com/services/execution-cost"
    ]
  ],
  "name": "x402.presenceoperations.com/services/execution-cost",
  "owner_address": "0x51edd63f074eab0b1ab94c7bcf8b1e3ad43f1d2f",
  "raw": {
    "accepts": [
      {
        "amount": "4800",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x51edd63F074EaB0b1AB94c7BCf8b1e3aD43F1D2f",
        "scheme": "exact"
      }
    ],
    "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.",
    "extensions": {
      "bazaar": {
        "category": "transaction-simulation",
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "market": "BTC-PERP",
              "notional": 1000,
              "side": "BUY"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "absorbable": true,
              "averageFillPrice": null,
              "bookObservedAt": "",
              "detail": "",
              "filledNotional": 0,
              "levelsConsidered": 0,
              "market": "",
              "requestedNotional": 0,
              "side": "",
              "slippageBasisPoints": null,
              "touchPrice": null
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "market": {
                      "description": "the perpetual market to price, upper-cased before matching, for example BTC-PERP",
                      "pattern": "^[A-Z0-9]{1,16}-PERP$",
                      "type": "string"
                    },
                    "notional": {
                      "description": "the size to price, in quote currency, bounded so one paid call cannot become an unbounded read of the venue",
                      "maximum": 100000000,
                      "minimum": 1,
                      "type": "number"
                    },
                    "side": {
                      "default": "BUY",
                      "description": "which side of the book to walk; omitted means BUY, and anything outside BUY or SELL is refused rather than answered as the default, so a misspelled side is never charged for",
                      "enum": [
                        "BUY",
                        "SELL"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "market",
                    "notional"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T18:24:34.589Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 7,
      "lastCalledAt": "2026-10-24T18:24:34.033Z"
    },
    "resource": "https://x402.presenceoperations.com/services/execution-cost",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "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."
}

What the leaf hashes

{"body":"112de1e13372991a78926c96e62254b7eb4178a669c30f3a9bf967a4d7129fa2","id":126750,"kind":"listing","method":"baseline/1","observed_us":1793025636005259,"prev":null,"subject":"x402_bazaar:https://x402.presenceoperations.com/services/execution-cost","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. 0x67160cb0dda0965c0ed077719cb1eb30636aacbb34a02c785253aa4f1760f3d6
2. 0xc1ddb3977e8fb5b87e02d5e515645d793e58a6bab146b7a0581c0b397c734e7d
3. 0xaf092229a5e19989e83ad39186ed27b7327c59b577ba71d304f265f9874acdb9
4. 0x8c861dc727dcda812f2d58612fcd3c9cc7f3e8742e7ab332abd65a04e43f6a09
5. 0x354f66ed76a2514e26832fca294cb092d7d020e6c6870b9d3f71ef30525250cb
6. 0xfc291a97adc168ae1c8f5141804a009e8859d94fdf618d7475af1c1014de83ad
7. 0x393a582f5d6a3482e231c533f00dc955de10382fbaa4f7925e802c53eb7d5afe
8. 0x837cb5912a275185f35389f95caf3c6fd1fbea0b4109e5c9bad77f4a2b528f11
9. 0x39d055f1a5898b25bdcfd8aa904cd619413462803f89fae9558b66148b215879
10. 0x1532666d1a6a9b626e54c3e93335a185ec833ad947243bdea3c723654b68d9f4
11. 0x13951c97c827e2025801573dada28cfb5f8038c9b4de741f9d526cb67b3fe605
12. 0x260682fd6ecd274e73505c5e0bd798abdd0e702afca4f8eebd4331b607a6b175
13. 0x5f350d70c252ff1169c0210fd45fce1b0ab8d7316f048741a9e90a6c8cb65dcf
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae