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Evidence row 120092

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/csv-parsing-pitfalls-encoding-quotes-excel
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
905c19de0ce608965800949c43654eb3c7e7b471134cd910664e974915a8891a
Leaf
0x4e950ad3dde5be254bb61ae7bdc36b3672949a0a1047c54da6a32fe96aaf9c3a

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/csv-parsing-pitfalls-encoding-quotes-excel"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:csv-parsing-pitfalls-enco",
          "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:csv-parsing-pitfalls-enco",
          "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:csv-parsing-pitfalls-enco",
          "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:csv-parsing-pitfalls-enco",
          "reference": "Fc3hnWw3kzrA3VQWd3BhKGbUFDyUXXzaaCbATCGf63oh",
          "session": "eyJhcnRpY2xlSWQiOiJjc3YtcGFyc2luZy1waXRmYWxscy1lbmNvZGluZy1xdW90ZXMtZXhjZWwiLCJyZWZlcmVuY2UiOiJGYzNobld3M2t6ckEzVlFXZDNCaEtHYlVGRHlVWFh6YWFDYkFUQ0dmNjNvaCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNzgxNTgwMDcyfQ.aSbpeouNpTa7aTCs92K2ivJhRrcOtxkgEjvWttrTbfo"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
          "memo": "saylor:csv-parsing-pitfalls-enco",
          "reference": "4VZ2uZpMZT2oK6iokn5qbwdSQEeyM3hzfffbZakn7j3P",
          "session": "eyJhcnRpY2xlSWQiOiJjc3YtcGFyc2luZy1waXRmYWxscy1lbmNvZGluZy1xdW90ZXMtZXhjZWwiLCJyZWZlcmVuY2UiOiI0VloydVpwTVpUMm9LNmlva241cWJ3ZFNRRWV5TTNoemZmZmJaYWtuN2ozUCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNzgxNTgwMDcyfQ.JWMH5gI2kcDhm3oy_MssTnoL28Z0inoXFxnJcaTXBqQ"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93295",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:csv-parsing-pitfalls-enco",
          "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": "96181",
          "reference": "ApMjX18H9LP9Ngdk7Y4Q2Ki1iRzjPfBd85NcED4F1mdk",
          "session": "eyJhcnRpY2xlSWQiOiJjc3YtcGFyc2luZy1waXRmYWxscy1lbmNvZGluZy1xdW90ZXMtZXhjZWwiLCJyZWZlcmVuY2UiOiJBcE1qWDE4SDlMUDlOZ2RrN1k0UTJLaTFpUnpqUGZCZDg1TmNFRDRGMW1kayIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5MzI5NSwiZXhwIjoxNzkyNzgxNTgwMDcyfQ.k9WCHyip_pSOCe0jT_Vpzf8DtoXdqZr6YS1eVVZqZ2E",
          "solUsdPrice": 103.97
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Fix CSV problems - csv module not split, newline and BOM handling, cp1252, delimiter sniffing, keep leading zeros, Excel export, formula injection",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "Handling real-world CSV: csv.reader versus split, quoting and embedded newlines, newline parameter, BOM and cp1252, delimiter sniffing, leading zeros and long numbers, formula injection and exporting for Excel.",
              "c": "Self-Hosting & Infra",
              "id": "csv-parsing-pitfalls-encoding-quotes-excel",
              "t": "CSV Parsing Pitfalls: Quotes, Embedded Newlines, Encodings, Excel and Delimiters in Python"
            },
            "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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-23T18:51:00.118Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-23T18:50:59.785Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/csv-parsing-pitfalls-encoding-quotes-excel",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "csv",
      "python",
      "excel",
      "encoding",
      "data-cleaning"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Fix CSV problems - csv module not split, newline and BOM handling, cp1252, delimiter sniffing, keep leading zeros, Excel export, formula injection"
}

What the leaf hashes

{"body":"905c19de0ce608965800949c43654eb3c7e7b471134cd910664e974915a8891a","id":120092,"kind":"listing","method":"baseline/1","observed_us":1793025617223226,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/csv-parsing-pitfalls-encoding-quotes-excel","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0x4e962682f9ba035d689bfee53bab75305331923db1544232d16ead424136cb15
  2. 0xcb49555e5f04541d90889920a6eef388aecca3f0e7e82c556cad15d1df021c23
  3. 0x7881a60148372799fa9789e1c43103dfe54ed65351cd30773f3ebe1539a5bc1d
  4. 0x2fa19e18f99a7d507b9f1bf55c8581fa7df80d4a606642df45393f8299e26cb6
  5. 0x0f73aec1d5ad72cb6c9f115901ffb1ae0986820f3ff7f19c0649ddfc8f91a813
  6. 0x50ece1e29fc72834207827c93b44f43f54aeb631fe5892c77f0212d7bdc9fe68
  7. 0x4063b0f49116fb3ecbd63c509f4e5649e9e4b2cd5df64c9aaa49b1977e69b534
  8. 0xaf763b0948da365fc0ef988fbdc9b315e7f23b7c591755e1a0a746af0f43fdf5
  9. 0xb5a2ff57df9c49538a0db5306ddc37af974a8caaa04dd03823b77e9b0412f004
  10. 0x3c2a519207c7fbe7025a4c98d41e42ecc9446b3fb0b1dbff629a91c8c74e0781
  11. 0x20ba86fd56bddd46212d02e792b969e90a1167c4fb9ba4a54cb7da5cf7da1629
  12. 0xaf14a84837a57dc5a0cb0ebd158daaad24c19301b9257d9e97c322a7d8c54bc0
  13. 0xf7d2cf278e5d2768b8bdb70730c378877cf7165d8efcbec8bcd3282fdc50d177
  14. 0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
  15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
  16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
  17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
  18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON