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Evidence row 1791881

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/hard-drive-diagnosis-can-a-3-5-inch-drive-run-on-poe
Recorded
Previous row
#120143
Body SHA-256
ed9b7c883332f4c037b429a01c7b2f76b0cf56d97b0bbc2b571ed054c97f5fd9
Leaf
0x142882ad63cb0acc7c70e2a58a92a298469127c10bd6e091197fded83792746f

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/hard-drive-diagnosis-can-a-3-5-inch-drive-run-on-poe"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:hard-drive-diagnosis-can-",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:hard-drive-diagnosis-can-",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:hard-drive-diagnosis-can-",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:hard-drive-diagnosis-can-",
          "reference": "EVKuKGq3YjDgpnGCZSvJM9AFRc1aSNrnHqxSGTaDmysF",
          "session": "eyJhcnRpY2xlSWQiOiJoYXJkLWRyaXZlLWRpYWdub3Npcy1jYW4tYS0zLTUtaW5jaC1kcml2ZS1ydW4tb24tcG9lIiwicmVmZXJlbmNlIjoiRVZLdUtHcTNZakRncG5HQ1pTdkpNOUFGUmMxYVNOcm5IcXhTR1RhRG15c0YiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDc1NTg2M30.TE66m1u_2vIdaCyfmDFJS8IjHhT8pJe737bhKC9a3rA"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:hard-drive-diagnosis-can-",
          "reference": "AijseW7t1SwvgeSpe3J7GuZdusA89V86qMajR2hgee7f",
          "session": "eyJhcnRpY2xlSWQiOiJoYXJkLWRyaXZlLWRpYWdub3Npcy1jYW4tYS0zLTUtaW5jaC1kcml2ZS1ydW4tb24tcG9lIiwicmVmZXJlbmNlIjoiQWlqc2VXN3QxU3d2Z2VTcGUzSjdHdVpkdXNBODlWODZxTWFqUjJoZ2VlN2YiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDc1NTg2M30.CZ7XT1IakXJMiaa2jTXtTniVpCoOj9DioAqdwpYMAIQ"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92327",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:hard-drive-diagnosis-can-",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "95183",
          "reference": "ETf5H6EiHmEBsQPaDwzd418xmPMPqDPpGG3A5BQG2cya",
          "session": "eyJhcnRpY2xlSWQiOiJoYXJkLWRyaXZlLWRpYWdub3Npcy1jYW4tYS0zLTUtaW5jaC1kcml2ZS1ydW4tb24tcG9lIiwicmVmZXJlbmNlIjoiRVRmNUg2RWlIbUVCc1FQYUR3emQ0MTh4bVBNUHFEUHBHRzNBNUJRRzJjeWEiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTIzMjcsImV4cCI6MTc5MjQ2NDc1NTg2M30.xMYmp5JbezVayrJrQBNT5qULFeGP5DCu4zIixkTZ_rc",
          "solUsdPrice": 105.06
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Why a 3.5-inch hard drive cannot run on PoE - power budget and workable alternatives",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "Why a 3.5-inch HDD can't be powered directly over PoE — the +12V/+5V and 6–10W spin-up requirements versus PoE's 48V/15.4W (or PoE+ 25.5W) budget — and the workable alternatives: PoE splitters for low-draw drives, PoE NAS units, or moving to 2.5-inch drives/SSDs.",
              "c": "IoT & Hardware",
              "id": "hard-drive-diagnosis-can-a-3-5-inch-drive-run-on-poe",
              "t": "Hard Drive Diagnosis: Can a 3.5-Inch Drive Run on PoE?"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "body": {
                      "description": "Main body text",
                      "type": "string"
                    },
                    "c": {
                      "description": "Category of the guide",
                      "type": "string"
                    },
                    "id": {
                      "description": "Identifier of the record",
                      "type": "string"
                    },
                    "license": {
                      "description": "License identifier",
                      "type": "string"
                    },
                    "price": {
                      "description": "Price",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "t": {
                      "description": "Title of the guide",
                      "type": "string"
                    }
                  },
                  "required": [
                    "id",
                    "t",
                    "c",
                    "body"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-20T02:50:35.951Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-20T02:50:35.572Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/hard-drive-diagnosis-can-a-3-5-inch-drive-run-on-poe",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "poe",
      "hard-drive",
      "power",
      "nas",
      "hardware"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Why a 3.5-inch hard drive cannot run on PoE - power budget and workable alternatives"
}

What the leaf hashes

{"body":"ed9b7c883332f4c037b429a01c7b2f76b0cf56d97b0bbc2b571ed054c97f5fd9","id":1791881,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559995770710,"prev":120143,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/hard-drive-diagnosis-can-a-3-5-inch-drive-run-on-poe","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (302406 rows).

  1. 0x14287c1aebdcfe47631373f897f8137eb337b70ff0be383a3ef2dc5359e5b4dc
  2. 0xa47e752bf55349be8e6628a1d098e9ab61de1713e29b3c04b1880eaabe5b28a5
  3. 0xa610d53dfc2682e0526a2b1267840f4e3ebce3b9540f46c5153590332a8f6543
  4. 0xe09608d031a788b37f1f9883dff884bf08c261c69d4669d8d5e19c1c60aafa2d
  5. 0x960ef180b38755170ce5832645bc0edabd76394e057186872d52c6841f55fcce
  6. 0x1c57610950d349d1e27f84381ec498e82f455fa0a3c54e1dba440f0b3f8f0d00
  7. 0x1af9739e25a290fcf41595fe6a6a0554738107e23ad467c0a18c67892374f950
  8. 0xac34b03c497c778de2907784c79dcbb328ebe29219284c64ee5510476d05c0bc
  9. 0x01833b22cd87075d66d39c3cf7fff244f466ac68bee3b77a0b6a60723b4f8760
  10. 0xe7280f29a4647a7c3b8c3e1e003689979df8260a0d162fbc6e35445ae2d271c0
  11. 0xf1ff5fb130c78235101ac2db45993a9a14f82bff6ec526eec34000d047812961
  12. 0x79859dae10fa788a49bdaa3213f20a160211971c37ee9e9362c112381c4c44f2
  13. 0xf1747d321f72e3e44bd30dc10c794e13858576ce0204d89dd555f1effa06ee29
  14. 0xb44b8d5019b9204aa2c2f558cdc381e6729b1aeca3e674741fa07287022b1f0f
  15. 0xf1aed005f71411c0df252d9623f284bcac7de199e24c4d4cd5df3e8d3348d3aa
  16. 0x5cf5a0a57795246f996e480f05ed085c19d02f7d6e8fc3ddc392412466554f0f
  17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
  18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
  19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910
Day root
0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3
Chained
0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4
Published
On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90

How to check it · This row as JSON