Evidence row 64926

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.aiskills402.com/v1/skills/prompt-caching-review/file"
    ]
  ],
  "name": "Prompt Caching Review",
  "owner_address": "0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4",
        "scheme": "exact"
      }
    ],
    "description": "Prompt Caching Review — Reviews ONE Claude API request (tools, system, messages, the cache marks, the model, the sizes and how often it is sent) for the five reasons its prompt cache does not pay off, and lists only those, one line each with a fixed code, the place, why the cache misses and the fix - or exactly No findings. It catches text that changes on every call (a clock, a request id, a user name) at or before the cache mark, a large stable prefix with no mark, a marked prefix shorter than…",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "file": {
                "content": "<the SKILL.md file>",
                "encoding": "utf-8",
                "name": "SKILL.md"
              },
              "name": "Prompt Caching Review",
              "ok": true,
              "receipt": {
                "settled": true,
                "tx": "0x<settlement transaction>"
              },
              "redownload": {
                "token": "<64 hex chars>",
                "url": "<api>/v1/purchases/<token>"
              },
              "sha256": "<sha256 of SKILL.md>",
              "skill": "prompt-caching-review",
              "version": "1.0.0"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "headers": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "type": "object"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "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": "2026-10-19T08:00:23.51Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-19T08:00:23.286Z"
    },
    "resource": "https://api.aiskills402.com/v1/skills/prompt-caching-review/file",
    "serviceName": "Prompt Caching Review",
    "tags": [
      "agent-skill",
      "prompt-caching-review",
      "claude-api",
      "prompt-caching",
      "cache-control"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Prompt Caching Review — Reviews ONE Claude API request (tools, system, messages, the cache marks, the model, the sizes and how often it is sent) for the five reasons its prompt cache does not pay off, and lists only those, one line each with a fixed code, the place, why the cache misses and the fix - or exactly No findings. It catches text that changes on every call (a clock, a request id, a user name) at or before the cache mark, a large stable prefix with no mark, a marked prefix shorter than…"
}

What the leaf hashes

{"body":"9213cc30184ee1941c780042531963ab0b62955ffc1f6a393bea4e23949d69fe","id":64926,"kind":"listing","method":"baseline/1","observed_us":1793025457478154,"prev":null,"subject":"x402_bazaar:https://api.aiskills402.com/v1/skills/prompt-caching-review/file","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. 0xe4298d53f65d553913b0bea3103334e015f6f15dad1d8eae2251a030e433f92f
2. 0x2f3c84d01676d9c47ec7763df7033ac528d706b15bc6e3a01e5a93f20b8d6f71
3. 0xc867a02f5754d6c58e08d04e3e0b9a20dc81e9cd8d51da9129f145658c31cae3
4. 0x4beccd8dc7c9ca9d16a52710eefa05f7b1ed37a3ad4f8185bc7d5edac06db1da
5. 0x5e902ea1d0e55da8faf29bb5a23a7c485ab49bd5efc81c8572c6f1845a350c4b
6. 0xa0cff26f78dc356f13122ce1404e2f76f62ec4170daa501ef654dde82442e13d
7. 0xadcc4ea249b0facc5f0eb10f4cbd7bd6d87ff5935e846390d37833a4fa40b452
8. 0xb36fa3b3bfd0cdc175102c84d5c20dee3f65b7e757b70a3408f08e6a70eadf6b
9. 0x444a7376940e2830bf72adff90bc8741426d1d746343c45469f2b29d6ccebab3
10. 0x15726dc36d12291b4937cc1d22f325d4939ad46dd10d4e44468a88a8cc8329ed
11. 0x162e0da99198c9cdc9c43bf4626e85f4a7092fdb31ea15c7126e1f98b20eaa56
12. 0x2fc38b57208d692aab1ee89b6e26917df292126314027c27360c5644a63fd0bc
13. 0xc0924a0807e534382f518663123231c317124338831a2b310de2c17b09677086
14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae