Evidence row 71515

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bess-x402.onrender.com/v1/crypto/futures-basis"
    ]
  ],
  "name": "Crypto Futures Basis Curve",
  "owner_address": "0x1129a6bb9c6165ff07fdc509c107b522ca0e1871",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0x1129A6BB9C6165FF07fdC509c107B522CA0e1871",
        "scheme": "exact"
      }
    ],
    "description": "Deribit BTC or ETH futures term structure: each expiry's price, premium over the index and annualized basis, plus the perpetual's premium. Use for cash-and-carry yields or sentiment.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "currency": "BTC"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "contango": true,
              "currency": "BTC",
              "futures": [
                {
                  "annualized_basis_pct": 2.37,
                  "days": 0.7,
                  "expiry": "2026-10-25",
                  "instrument": "BTC-25OCT26",
                  "open_interest_usd": 1414470,
                  "premium_pct": 0.0045,
                  "price": 79613.46,
                  "volume_24h_usd": 1112190
                },
                {
                  "annualized_basis_pct": 5.68,
                  "days": 1.7,
                  "expiry": "2026-10-26",
                  "instrument": "BTC-26OCT26",
                  "open_interest_usd": 1588230,
                  "premium_pct": 0.0264,
                  "price": 79630.89,
                  "volume_24h_usd": 1337030
                }
              ],
              "index_price": 79609.85,
              "perpetual": {
                "instrument": "BTC-PERPETUAL",
                "open_interest_usd": 875131310,
                "premium_pct": 0.0188,
                "price": 79624.8
              },
              "source": "Deribit"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "currency": {
                      "description": "BTC or ETH",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "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"
        }
      }
    },
    "lastUpdated": "2026-10-24T23:40:32.011Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-24T23:40:31.796Z"
    },
    "resource": "https://bess-x402.onrender.com/v1/crypto/futures-basis",
    "serviceName": "Crypto Futures Basis Curve",
    "tags": [
      "crypto",
      "futures",
      "basis",
      "carry",
      "term-structure"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Deribit BTC or ETH futures term structure: each expiry's price, premium over the index and annualized basis, plus the perpetual's premium. Use for cash-and-carry yields or sentiment."
}

What the leaf hashes

{"body":"ad5bb75a9894b2a0862ce35d008b8bfe72e59845ee54120f33a50cd258f2a986","id":71515,"kind":"listing","method":"baseline/1","observed_us":1793025482841434,"prev":null,"subject":"x402_bazaar:https://bess-x402.onrender.com/v1/crypto/futures-basis","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. 0x4f63c824724e093dc1f644f8e57368733af3e977ba18d5bcf42bdb150bef497c
2. 0x3ae2494c165ac0a3b37676ca3da4228d1742dc1e49527c54024165b161bc39c5
3. 0x673b487beaeedb723e7fcaada3e095b647355f175f3f8db5f4b7948225a6f87e
4. 0x9b7899038194b13f1d258f9030fd453d239add405377d69faf2926de12e9b0ef
5. 0x5f9ab995c124fc5b2f2e1c619193825dad9daa75db962c726dd250187990607e
6. 0x2c9e9292496248e7b05f09335c35ec6e839dd9630c5facd1edc40d5f0e12207b
7. 0xb948b346fafdefa36577cf531a7e8c046f542e77e1e2a0791f68ff23d601535e
8. 0x7cb82c3c2623e814741cf329d835c45fe8a559bb5e4f2cb90b4854eebb5dada9
9. 0xacc4ab5d2159cd023d21972eb8d02e84b89a4eb1bf664de39f79acd9472d3834
10. 0xca526104943205d387b1db76bc252dbbefc5b0a9f5a9e4bd56958a2820d48ee1
11. 0x72d408a0419640ce55a8ca5f9c16e8da5334b5f106300a379634eb22bded71e1
12. 0xaf14a84837a57dc5a0cb0ebd158daaad24c19301b9257d9e97c322a7d8c54bc0
13. 0xf7d2cf278e5d2768b8bdb70730c378877cf7165d8efcbec8bcd3282fdc50d177
14. 0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae