addrbookFor publishers
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Evidence row 3066309

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
#1791245
Body SHA-256
4876342aa6b1e1b0a8b22c26768fa7cf88e446cd77b2b615847e5a2fef572c8c
Leaf
0x030873837222657b93dfbf741d1b5c3abc29438dcfc431cdfe2b3263ed16d7a9

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": 2,
      "l30DaysUniquePayers": 2,
      "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":"4876342aa6b1e1b0a8b22c26768fa7cf88e446cd77b2b615847e5a2fef572c8c","id":3066309,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793822341524236,"prev":1791245,"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 (424109 rows).

  1. 0x030890a95ec9a906808aff209d7efe47b3bb033a9f9815b0e2f1761b7c9071fb
  2. 0xac3152367d8c5a6a7f218003100d43ecff5f88d0b8ee59a913b7eaaaae2e56c5
  3. 0x64812a917de100c7b39d1aac009d706478d9c1901a613caca532a3d070929f3e
  4. 0x1f99d78842cc986c1db05760254c02884fda9365647357d67f5831e050418594
  5. 0x50dabf80c58d60c96adb91b9f430947823dc04e3efb70a856645841d87de57c5
  6. 0x24744da6e70d67e536c511d5a9b7eb407501364fcc75af74747681b826b6a355
  7. 0x06a658533320f8bb458122cc04e4a7ffb6db3d65ab4251ad6ae863ad423e000e
  8. 0x7a9f4d990573eb79b894039f684a36a976e7221894a2f7caab893ab1cc284334
  9. 0xc7b6600e5f382af3a67cf0d6a0d03d5892a52a196bceedc9b383244270b3a6b1
  10. 0x0a8da480eea11395976bff2f36e288628f51dca572b5e5e913bee28f905a1632
  11. 0x960082aa62b2655dcc3c97aae26b92804a17f34d6fd51e38a5bdd13a994f9151
  12. 0xe82e08db55ec4d45c4297caab683f026dabd4d92fa23977e774f15c27c7af57e
  13. 0xad5a46dfc15b1fa22e8486151450a6f37d899055566d4c35056addcd7ce6bcf8
  14. 0x6a3416cf73ed4756d52640940225459d148cd46e589ccdf5cf8d39dc68c403bf
  15. 0x25c6f3031e09eeef9fb0f5c010f6aa1605f7af5f1a8859ce4db5ae48d0598359
  16. 0xcdac863807ea81d51a9ab718457637e91824fd377a06759901352d9a23933554
  17. 0x01c26569ec8e231551522ab452fd5d417c3d66f29c7c76886a8ec295a18dd624
  18. 0x02f64ca19e7d9b09718851d2ce3abf641982580de99411626d894607cf386cd5
  19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5
Day root
0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee
Chained
0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b
Published
On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345

How to check it · This row as JSON