Evidence row 75289

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://finance.openverbs.com/v1/npv"
    ]
  ],
  "name": "Net present value",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Net present value of a series of cash flows discounted at a per-period rate. cashflows[0] is the time-0 flow (typically the initial outlay, negative).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "cashflows": [
                1
              ],
              "ratePercent": 1
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "cashflows": {
                      "description": "Cash flows by period; index 0 is time 0.",
                      "items": {
                        "type": "number"
                      },
                      "maxItems": 10000,
                      "minItems": 1,
                      "type": "array"
                    },
                    "ratePercent": {
                      "description": "Discount rate per period, as a percentage.",
                      "maximum": 1000,
                      "minimum": -99,
                      "type": "number"
                    }
                  },
                  "required": [
                    "ratePercent",
                    "cashflows"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:13:47.634Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:13:47.352Z"
    },
    "resource": "https://finance.openverbs.com/v1/npv",
    "serviceName": "Net present value",
    "tags": [
      "net present value",
      "npv calculator",
      "discount cash flows",
      "investment npv api",
      "cashflow valuation"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Net present value of a series of cash flows discounted at a per-period rate. cashflows[0] is the time-0 flow (typically the initial outlay, negative)."
}

What the leaf hashes

{"body":"94a020fa07149601d840531516e08f1af0152cdba227dfa2ce165914ac961dbf","id":75289,"kind":"listing","method":"baseline/1","observed_us":1793025490303008,"prev":null,"subject":"x402_bazaar:https://finance.openverbs.com/v1/npv","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. 0x80112295a0a5e79855560c6453d593556c68b94d53c65467b3488955e45a8a33
2. 0x004b5017f3125544d96faf686f85e2abc4c3601d6259342607658dd82bf8453a
3. 0x3d73213af611d03dc63eeb96254fc7ab9802a3dd97c3a4bbf50cafdd56720319
4. 0x17998f859eeac4114d70fa4ba0b475fee77d646f6472a0f132b4737abebf80b7
5. 0xbf782446ef5d678253392f7da0b2046e10640e0183a43c9acd5932615a904e13
6. 0xd9027a3439aaab41b0508469b751cf53468216ad575a241ea02991a1dfa1ae93
7. 0xb3890022a1cf0b99e1297179c1074d8251c8f30a925ecc05f19fa6166ef0bea2
8. 0x7ce231718661b4a86c9a6d35ed8c55a8bd6fc2e3a7cd92be547cbc5071262ad4
9. 0x446341aac5252a350e04f43c2a957a932bda3f6c5cf9e71dc0f70c46c81ffbdb
10. 0x4ac6e7b8710a19dd69c1ac61f6e5bc5b40663b9f632b7d8a1515e0c4fc86564d
11. 0x94ff6a1838bb06ac09899310e3d37518c2cdbae79f32eb90e1b61eb995aed881
12. 0xb9c4107c5cbaf0844324e5ba287c90e0643bb7b9e48e7877adda9372132cf0ea
13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae