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Evidence row 1791245

Observed , by sync.x402_bazaar/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/how-flash-loans-smart-contracts-can-be-profitable
Recorded
Previous row
#120144
Body SHA-256
330d4af0324cae19ad4ce9c6a494e3595bebeeeb491d29685ef39af282a7c44e
Leaf
0x9fb8a4a8ebf6c5ca3a893c13742f76ba2dfe8ef019ce0b12b4569426c1dfb02a

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/how-flash-loans-smart-contracts-can-be-profitable"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:how-flash-loans-smart-con",
          "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:how-flash-loans-smart-con",
          "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:how-flash-loans-smart-con",
          "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": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:how-flash-loans-smart-con",
          "reference": "GehduUmQHkWNSCZ1n2GwwgJpJCcJmqh21crD9W6dTART",
          "session": "eyJhcnRpY2xlSWQiOiJob3ctZmxhc2gtbG9hbnMtc21hcnQtY29udHJhY3RzLWNhbi1iZS1wcm9maXRhYmxlIiwicmVmZXJlbmNlIjoiR2VoZHVVbVFIa1dOU0NaMW4yR3d3Z0pwSkNjSm1xaDIxY3JEOVc2ZFRBUlQiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDc1NjY5OX0.CZ3CyokgzCDweXptTEwxNPyxxcLEFrMaYqs7PwNTvfk"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:how-flash-loans-smart-con",
          "reference": "Ce11bTaozXaGRRr2zrLaguTr79XoNz93R8yBQ6rw2ox6",
          "session": "eyJhcnRpY2xlSWQiOiJob3ctZmxhc2gtbG9hbnMtc21hcnQtY29udHJhY3RzLWNhbi1iZS1wcm9maXRhYmxlIiwicmVmZXJlbmNlIjoiQ2UxMWJUYW96WGFHUlJyMnpyTGFndVRyNzlYb056OTNSOHlCUTZydzJveDYiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjQ2NDc1NjY5OX0.7hRDPKO1YzU7a_gXfpV8HxwpugI7c67jhNhPB1goXcI"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92327",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:how-flash-loans-smart-con",
          "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": "CzAYNG68wP9amas35D1dW9gAdeATrjaB5GRM5wkXZp89",
          "session": "eyJhcnRpY2xlSWQiOiJob3ctZmxhc2gtbG9hbnMtc21hcnQtY29udHJhY3RzLWNhbi1iZS1wcm9maXRhYmxlIiwicmVmZXJlbmNlIjoiQ3pBWU5HNjh3UDlhbWFzMzVEMWRXOWdBZGVBVHJqYUI1R1JNNXdrWFpwODkiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTIzMjcsImV4cCI6MTc5MjQ2NDc1NjY5OX0.ezg693kTwlZsU4nj-9n-z--wgB4vmO1paz7YeXQEgI0",
          "solUsdPrice": 105.06
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "How Flash Loans & Smart Contracts Can Be Profitable. Legitimate profit mechanisms in DeFi: how flash loans provide uncollateralized capital that must be borrowed and repaid within one block (reverting otherwise), with uses in DEX arbitrage, collateral swaps, and liquidations; plus lending, liquidity provision, and yield farming — framed with a risk disclaimer.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "Legitimate profit mechanisms in DeFi: how flash loans provide uncollateralized capital that must be borrowed and repaid within one block (reverting otherwise), with uses in DEX arbitrage, collateral swaps, and liquidations; plus lending, liquidity provision, and yield farming — framed with a risk disclaimer.",
              "c": "On-chain & DeFi",
              "id": "how-flash-loans-smart-contracts-can-be-profitable",
              "t": "How Flash Loans & Smart Contracts Can Be Profitable"
            },
            "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": "2026-10-20T02:50:36.732Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-20T02:50:36.446Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/how-flash-loans-smart-contracts-can-be-profitable",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "flash-loans",
      "defi",
      "arbitrage",
      "smart-contracts",
      "yield-farming"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "How Flash Loans & Smart Contracts Can Be Profitable. Legitimate profit mechanisms in DeFi: how flash loans provide uncollateralized capital that must be borrowed and repaid within one block (reverting otherwise), with uses in DEX arbitrage, collateral swaps, and liquidations; plus lending, liquidity provision, and yield farming — framed with a risk disclaimer."
}

What the leaf hashes

{"body":"330d4af0324cae19ad4ce9c6a494e3595bebeeeb491d29685ef39af282a7c44e","id":1791245,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559977150808,"prev":120144,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/how-flash-loans-smart-contracts-can-be-profitable","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. 0x9fb87845f1465af3e97060b0e31e24dd579d4797bb09443e50c5450496b4a8b0
  2. 0xe30672ad73cecb0e98090d0b1c7d7b3b4c231be3ff9eb1968d679fff2929c442
  3. 0x54bb23808ff58126dca5481cd1e45230c3585d0b0bc985f22dc8308d7f473761
  4. 0x823c90ddc3fac55d7a8bf6cf29f77da388677b88b4d72ba04fa16058a457a6d7
  5. 0xba5ff6f73aaa744995b0ec3ac70d2ef05fb07cd93db67553ab424bd401da3258
  6. 0x44b0cf88e8cd0e454df2539401ef863431f84584c58ef67b1aff910491097fb8
  7. 0xa739e2978c628ac05f019a0a93bc9735188899116a42cc6257239bb623af0c62
  8. 0xc26bd06293d1faac390ab4d7d541763e21b4bdf9702a6dbf58bbbc203e332e7d
  9. 0x70ede2ed14c7682100766a73ed35be7045cd02979e83e8402d5ac96cfefbd34e
  10. 0x61c6c4edc8893ecf392d365dc9c4436b2740c6b68a4e1ea677fff11c357a14b5
  11. 0xe91c7575633d77a3e50293af8a604ad57d26cd33156a92c021ab0447865f3809
  12. 0x4c8d70bbc71171c6f09376b1cd5cdb76fcc86cf6f4242fe3365e640972ba1ec2
  13. 0x4d2f8da78dc8a660de1d8b86f0083d4295117c283b6de5334a6a9d06be22e64e
  14. 0x699b83b189435f7ea2dc2d6d4f13262932214c0f9293f3ad20a20f7633995f1b
  15. 0x4a900ec4cce00639b2e45adc5a7ba556793a171aadb927fa15d539147429570d
  16. 0xc2b1c84ef3531511a3d8d9db5ff9eeca2725a3782e7f9c4ac87fc0f1588349fa
  17. 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
  18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
  19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910
Day root
0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3
Chained
0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4
Published
On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90

How to check it · This row as JSON