Evidence row 452901

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.swaphunt.dev/v1/market/halving"
    ]
  ],
  "name": "x402.swaphunt.dev/v1/market/halving",
  "owner_address": "0xd6b585dd2f48263d08fb75ea28c1598d845d23a8",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xD6b585DD2F48263D08FB75EA28c1598d845d23a8",
        "scheme": "exact"
      }
    ],
    "description": "BTC or LTC halving countdown: blocks remaining and the estimated date of the next halving. Use for cycle-timing narratives and supply-shock context. Estimate (block-time based), not an exact timestamp.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "coin": "BTC"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "blocks_remaining": 78400,
              "coin": "BTC",
              "current_block": 971600,
              "days_until_halving": 540,
              "estimated_date": "2028-04-20"
            },
            "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": {
                    "coin": {
                      "default": "BTC",
                      "description": "Coin (BTC or LTC)",
                      "type": "string"
                    }
                  },
                  "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": "2026-10-27T09:58:18.225Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-25T18:42:29.487Z"
    },
    "resource": "https://x402.swaphunt.dev/v1/market/halving",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "BTC or LTC halving countdown: blocks remaining and the estimated date of the next halving. Use for cycle-timing narratives and supply-shock context. Estimate (block-time based), not an exact timestamp."
}

What the leaf hashes

{"body":"da668093b993b994e4453cbdd73c155673ea238037500d71a4920997045ceaa0","id":452901,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100576309830,"prev":126872,"subject":"x402_bazaar:https://x402.swaphunt.dev/v1/market/halving","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x8a77528ffd04e7d50a8b1f6ba2bcb3727485dd5029d488eb665096b201e7acfb
2. 0xc9e6d01cd32ea0c5415eca82a9551567f9dfc95f50d2ea89185b7ce4ce5789d3
3. 0x501c1787fb92c39c087332e998c8b0109d21350a95a4535f4e94a2912aacb8a0
4. 0x3cb16e3beabd2377065fe6d803a15b14a38dd23643f47060d71815ce446f523e
5. 0x806adbc26f92bfd636b19e40d8cef56c9e6cce0c455b5b2228c500b3f3473be8
6. 0x999a136fd37c160addb774d1c15bcdbf364696c3215d1242733f16c43a3edacf
7. 0x6c3f4f4bc3e4568acc18c2741c6d030e4a2a132f3594897f99af4ce5d68389d3
8. 0x9313bdf7babce8078b592cbaf9ba0f5b2526710ee5c4295c54104dd0ecb9b09d
9. 0x5d0ecbd1006bbc533624c8f935f7913d62ac46a2c5641e4e9f9985779f15b207
10. 0x215901fa5df1301acd35e6214697f9d1caa7039adbe3e43bdb0aea727b670dc4
11. 0x0e491e41680f12f7d8bdf222ee07202258510c3550459071f98f077368a5cd2f
12. 0x30c799f301803795a41119ff9181a1ecb65705ab464b7ef061de2b33772eca73
13. 0x6251e2be57e8d16b82579481d181c265d75096882014489550b74a728741f2f1
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4