Evidence row 123746

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/xyz-TSLA"
    ]
  ],
  "name": "vaunt-dispatch-production.up.railway.app/agent/x402/cost/xyz-TSLA",
  "owner_address": "0xf4b1093a9498523e18c484989df5157012abb85f",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xf4b1093a9498523e18c484989df5157012abb85f",
        "scheme": "exact"
      }
    ],
    "description": "True cost of trading xyz:TSLA on Hyperliquid, measured on Vaunt's own IOC taker orders: slippage vs mid (p50/p90 bps), taker fee paid, wall-clock to fill, fill rate, against the venue-class median, plus spread, round-trip cost, depth within 1% and funding APR. Real fills, not quotes.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "asset": "xyz:TSLA",
              "dataset": "vaunt.cost",
              "liquidity": {
                "as_of": "2026-09-09",
                "depth_within_1pct_usd": 4164926,
                "funding_apr_pct": 8.7,
                "perp_spread_pct": 0.01,
                "round_trip_cost_pct": 0.11
              },
              "our_fills": {
                "days": 21,
                "fill_rate_pct": 100,
                "fills": 38,
                "last_fill": "2026-09-09",
                "latency_ms_p50": 1380,
                "since": "2026-07-16",
                "slippage_bps_p50": 1.2,
                "slippage_bps_p90": 5.9,
                "taker_fee_bps_mean": 4.5
              },
              "venue_class": {
                "class": "hyperliquid:perp",
                "latency_ms_p50": 1400,
                "slippage_bps_p50": 1.7,
                "slippage_bps_p90": 7.9,
                "taker_fee_bps_mean": 4.5
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    },
    "lastUpdated": "2026-10-25T15:21:08.141Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-25T15:21:07.929Z"
    },
    "resource": "https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/xyz-TSLA",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "True cost of trading xyz:TSLA on Hyperliquid, measured on Vaunt's own IOC taker orders: slippage vs mid (p50/p90 bps), taker fee paid, wall-clock to fill, fill rate, against the venue-class median, plus spread, round-trip cost, depth within 1% and funding APR. Real fills, not quotes."
}

What the leaf hashes

{"body":"f3ca8de3f8247aa9cf2f6d1318e955e7be3b0a7d9f02331f088572cf68b2d3a7","id":123746,"kind":"listing","method":"baseline/1","observed_us":1793025623675833,"prev":null,"subject":"x402_bazaar:https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/xyz-TSLA","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. 0xa9fe67ffe2648b73ee194ac7ee746c3aa2c11270644374ec4d4d28d561014927
2. 0x79185bd69f938ad9458933311d3329b89f22b4f2848f1da2b46a46f2881d9410
3. 0xe2b09eef396c19cee2b2879ba51186e21131d0f563b040b886590ac8e8d7896b
4. 0x638466a1572445dc9a2e2d8335d5e8db8c3e45c5d8b7cad9404f312ea4e2f838
5. 0x62e5ffc6b2ce28799e80024e163c9ed76bfa39e0fc4b83ec939eb3b948608ce7
6. 0x0827b69a9e65766830a95e930b9de92de6a3b67c52122119f705516748a614af
7. 0xae96117e15f8a00a862b86ec9ceb3a753c8a59d172433f53c8e120247c458782
8. 0x58b15397c7959021d625410ce18d828acee75953f32e8a5b26bf7f27097e2b15
9. 0xc580924a5a23f25de4357c17fc84cd3fafa3d3afccfd4e18ea2cb141221341eb
10. 0x382774117c6a99ced4320ca176d4e72cc7226f2fa6e3d8ac0173511fe55d6919
11. 0x55ba80743bf45624f0b04651dfd0a37e2a85f91f45e334ff14efbb74a49dd361
12. 0x09a19b8d31a6e948e5051cb72b98b1d2b2bfe053f62d6d24d61c22b3ed1c3f24
13. 0x4700d6dfdb40e52e2ceb8ffe62c75f3f708d23452f828255fd003d795f5d9d66
14. 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae