Evidence row 458237

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.aiskills402.com/v1/skills/oauth-redirect-flow-review/file"
    ]
  ],
  "name": "OAuth Redirect Flow 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": "OAuth Redirect Flow Review — Reviews ONE OAuth 2.0 or OpenID Connect sign-in flow written in code for the four mistakes that let an attacker steal a login or a token, and lists only those, one line each with a fixed code, the function, why it hurts and the fix - or exactly No findings. It catches a state value that is never compared or not tied to the user's session, a browser or mobile client that sends no PKCE challenge, a redirect address matched by prefix or substring, and an implicit flow …",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "file": {
                "content": "<the SKILL.md file>",
                "encoding": "utf-8",
                "name": "SKILL.md"
              },
              "name": "OAuth Redirect Flow 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": "oauth-redirect-flow-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": "2026-10-27T08:01:45.863Z",
    "quality": {
      "lastCalledAt": "2026-10-27T08:01:45.863Z"
    },
    "resource": "https://api.aiskills402.com/v1/skills/oauth-redirect-flow-review/file",
    "serviceName": "OAuth Redirect Flow Review",
    "tags": [
      "agent-skill",
      "oauth-redirect-flow-review",
      "oauth",
      "oidc",
      "pkce"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "OAuth Redirect Flow Review — Reviews ONE OAuth 2.0 or OpenID Connect sign-in flow written in code for the four mistakes that let an attacker steal a login or a token, and lists only those, one line each with a fixed code, the function, why it hurts and the fix - or exactly No findings. It catches a state value that is never compared or not tied to the user's session, a browser or mobile client that sends no PKCE challenge, a redirect address matched by prefix or substring, and an implicit flow …"
}

What the leaf hashes

{"body":"98aeb911f1fe87ddd6fa8d97dd6c55345da11461aedb81120e14837005121d13","id":458237,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100982214811,"prev":null,"subject":"x402_bazaar:https://api.aiskills402.com/v1/skills/oauth-redirect-flow-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 2026-10-27 (273461 rows).

1. 0x3d8aa29da35c2048aecc5c54bfa3aaaf7decdf1c1896a44deeaf42b407ed10d6
2. 0x29ed131da51a764a2a2d5b2ffdf24b86929146da2b6476edfe9356aab6ef2c19
3. 0xeb60910101682e08cd7a75175b84c42cf2501f04e2dca919bad2e73ac265e989
4. 0x6d86936f17a275f7d1cfde0ebdca3f8912bb7d0f7aca430e95214a968b087fc8
5. 0x3ea6e181f95c0daebf3fa5a84c13223a3f31b70a61885ab0c65c155ffc9cec09
6. 0x0d82524eda6acd6b7ffedccc4c66e1d4e460a5d4f745d0551cfa24515e5fc724
7. 0xecc70e65e1c2d75168c537e0083230ffc5cec7652e26e2d05769044a79ea75bc
8. 0x3edcf170e83b55c818899df25bc3be52d5dd9634f89eb270a050533a2a5a5588
9. 0x9f5bad654534c0b4c485c712b1ea2bf5f2d4ca3287239129796f0febbf37b7ae
10. 0x2c7b2dd8bdb23032c549cb56bea8f8a4ae7001d581b5f30e31165a845fdddae3
11. 0x2a46b413c4a79ee979d8a40f091ba215dc98b3af9709a0311b2ff60a4cb34d60
12. 0x5bcdf911ebda5c6d942d996f5453cef161d2571921ceb388d7c8ffbdc925f4d0
13. 0x9e70d944564843a0f0d88b623d628ff2e2ac17c172d4ebe0ed141fe8b9f9dae4
14. 0x42784d9809d120654630ee1b254a1dd90a2bbd3024aa180f1a59bbf53e9316e4
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4