Evidence row 122662

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://timecode.openverbs.com/v1/add"
    ]
  ],
  "name": "Timecode arithmetic",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Add or subtract from a timecode, either another timecode (b) or a raw frame count (frames), at a given frame rate. Uses frame-exact SMPTE math (including drop-frame). A result below zero is rejected as a clean 400.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "a": "01:00:00:00",
              "b": "00:00:10:00",
              "dropFrame": false,
              "frameRate": 24,
              "operation": "add"
            },
            "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": {
                    "a": {
                      "description": "The base timecode.",
                      "maxLength": 20,
                      "minLength": 1,
                      "type": "string"
                    },
                    "b": {
                      "description": "A timecode to add/subtract (use instead of frames).",
                      "maxLength": 20,
                      "minLength": 1,
                      "type": "string"
                    },
                    "dropFrame": {
                      "description": "Drop-frame counting (auto-detected from a's separator if omitted).",
                      "type": "boolean"
                    },
                    "frameRate": {
                      "description": "Frame rate for both operands.",
                      "enum": [
                        24,
                        25,
                        30,
                        48,
                        50,
                        60,
                        23.976,
                        29.97,
                        47.952,
                        59.94
                      ],
                      "type": "number"
                    },
                    "frames": {
                      "description": "A frame count to add/subtract (use instead of b).",
                      "maximum": 1000000000000,
                      "minimum": -1000000000000,
                      "type": "integer"
                    },
                    "operation": {
                      "description": "Operation. Default add.",
                      "enum": [
                        "add",
                        "subtract"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "frameRate",
                    "a"
                  ],
                  "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": "2026-10-25T18:54:20.939Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-25T18:54:20.69Z"
    },
    "resource": "https://timecode.openverbs.com/v1/add",
    "serviceName": "Timecode arithmetic",
    "tags": [
      "timecode arithmetic",
      "add timecode",
      "subtract timecode",
      "add frames to timecode",
      "frame exact calculation"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Add or subtract from a timecode, either another timecode (b) or a raw frame count (frames), at a given frame rate. Uses frame-exact SMPTE math (including drop-frame). A result below zero is rejected as a clean 400."
}

What the leaf hashes

{"body":"305786c57ce867f5ecca7e417f1be72f5a8a9fe80fca2fbb6381c32a90608d6d","id":122662,"kind":"listing","method":"baseline/1","observed_us":1793025622040215,"prev":null,"subject":"x402_bazaar:https://timecode.openverbs.com/v1/add","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. 0xb654459a89a3ab855b8274a39e24993a66e9efeabd1deaa032d797ae7b02d889
2. 0x5756630e1a630dbf65f61007fe2ee3d3cc0639f617f323a80da6b07084e25a1b
3. 0x5ec9426b3c627dcf465c5682926904f546564dab473378bfa885b20fbee55162
4. 0x000a8a3c509fce47a3ebcca4550b4dc1c0aef6ba44caa826c3f2430270e47aa9
5. 0x183052b38fed678bd0c8402d42a301847522ecc0f04294aa392811acc274c0c0
6. 0xe188f6624a4ecd1d24e8c784ec5f74d3912f4b40df22d075a1dc9f51af269ea3
7. 0x320a98a342fc60fe66c16696f6c54341d1ab97ef26bab051c3b0a1af79e7f176
8. 0x8a35e48e739b861bc618f91f72cd677ce5767dfd38a788eb759f595f3bb84090
9. 0x17c5eb499c739104e3ee6760572356177431c4d3f08fa40547afffb9721d3885
10. 0x083b213d55f010a12e9f2c7182db3d2a36f1323ef61111ababe982fa9f8e6726
11. 0xfa91c460bb9b05b6890b46e5326a89c9e487b6419bd4d84337c05040222a2e6c
12. 0x17930d484cab3f6850715eb0b77dd189c3c06f975cf9def12285fde3eb9b4234
13. 0x0d86419ca1dd0b62fd8b22ea2e8c74d441312cec3116a467bea429b43e026565
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae