Evidence row 123740

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/LINK"
    ]
  ],
  "name": "vaunt-dispatch-production.up.railway.app/agent/x402/cost/LINK",
  "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 LINK 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": "LINK",
              "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": "2026-10-25T14:34:50.973Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-25T14:34:50.541Z"
    },
    "resource": "https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/LINK",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "True cost of trading LINK 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":"d07a4a477e049597421d7a58fac591360b12dfa2227411f5e04db0463523a0d1","id":123740,"kind":"listing","method":"baseline/1","observed_us":1793025623669249,"prev":null,"subject":"x402_bazaar:https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/LINK","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. 0x6c14c8d5acf1047d75232cffbf841201bc3560032fd5768bae118d7d902f314b
2. 0x79a2f63d522dac491ebb2693f79c49eac814da97d54ba35d9af225cd939e8af0
3. 0x4edaf9fcd93d008bbed64160db3980df7c70ceacfc70e10bcea6822027cb308c
4. 0x08e19dbc3736ede0720f10438d695739646b95c57110741df6064ee534321b7b
5. 0xbb5a12c458adc88802abee43a3c4e056fbad13fbe5679e803e8eba7fa8212299
6. 0x61c1f8f87cff1d7744f46c7c124154e791883569b7650fe5623520d885fd5fe3
7. 0x7c0fc22733c9295e29dfa1bd297a5cb3bdc2ef6a1bb2a686ad0be85b04758d37
8. 0x3660692aec8b4947e36ad4b93af92b83287c8a5268e84e9d5a891a9ffdff7ea4
9. 0xd35d757b28d1b2187d4f5128b26b92dc7b001e15ff826e0f1f8493832c25634e
10. 0x2ca36bcf24f7f9df5a29990036f867afd2c15f246eb9f81bf8b0be7cd16f6dec
11. 0xaf4d0478104c20d31096b9739629a924615768419c52449971b47a4881ebc159
12. 0x929b3f59cbf01edbae456522161805dd51e098dc3a66d845508de46581bb953c
13. 0x9dc4d6f64bc3c323d2c45a28209068cd473b6979bd632a0d694bf94d19bc39df
14. 0xfc9b5a81a7a83a1c735a4fe64590beb9db14d2366f463161358af28c3ea9a81d
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae