addrbookFor publishers
← The evidence ledger

Evidence row 120681

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/tax/tip?
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
11bed7df22eaaab336904359ee2ab781d58994f5041f2db26c3291e30f86593d
Leaf
0x9ebee25c3e9a136ce3221faa9cb68134cef82010850f27094b8c26732c780451

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/tax/tip?"
    ]
  ],
  "name": "Saylor Innovations  Tip, Tax, an",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:tax:tip",
          "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:tax:tip",
          "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:tax:tip",
          "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": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:tax:tip",
          "reference": "Ah5DcKeC8KiQfyshyRV4ZcHgujjvPfdkCatWoyxvJj7E",
          "session": "eyJhcnRpY2xlSWQiOiJ0YXg6dGlwIiwicmVmZXJlbmNlIjoiQWg1RGNLZUM4S2lRZnlzaHlSVjRaY0hndWpqdlBmZGtDYXRXb3l4dkpqN0UiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFUGpGV2RkNUF1ZnFTU3FlTTJxTjF4enliYXBDOEc0d0VHR2tad3lURHQxdiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjM2NzIyOTE5NH0.GqTW8JTPpXRqRJwe07s5__-jcvwIjF3w_TvRYxrcjnk"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
          "memo": "saylor:tax:tip",
          "reference": "Fwph9wXqVyRAv8gTWA1TRj7KFqyhz7UP4EsANmnAUNyt",
          "session": "eyJhcnRpY2xlSWQiOiJ0YXg6dGlwIiwicmVmZXJlbmNlIjoiRndwaDl3WHFWeVJBdjhnVFdBMVRSajdLRnF5aHo3VVA0RXNBTm1uQVVOeXQiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjM2NzIyOTE5NH0.DQ-jVprSua2fb9y49MD7iqFbpI_Fb2xkn5N2ljUAvSc"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "93206",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:tax:tip",
          "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": "96089",
          "reference": "7KghM6uyQV1cGCbbYkjxr4ZC7ayH8pQU8jePKSuY4amS",
          "session": "eyJhcnRpY2xlSWQiOiJ0YXg6dGlwIiwicmVmZXJlbmNlIjoiN0tnaE02dXlRVjFjR0NiYllranhyNFpDN2F5SDhwUVU4amVQS1N1WTRhbVMiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTMyMDYsImV4cCI6MTc5MjM2NzIyOTE5NH0.YibYTpNBS2O7JtvsJA4mQX-35uzhCDDBjYyLy8S12uo",
          "solUsdPrice": 104.07
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Tip, tax and total bill calculator from subtotal, tax rate and tip rate",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "subtotal": "100",
              "tax_rate": "8",
              "tip_rate": "20"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "scope_note": "Dining arithmetic only; service and tax rules vary.",
              "subtotal": 100,
              "tax_amount": 8,
              "tax_rate_percent": 8,
              "tip_amount": 20,
              "tip_rate_percent": 20,
              "total": 128
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "subtotal": {
                      "description": "required non-negative bill subtotal before tax and tip (query)",
                      "type": "string"
                    },
                    "tax_rate": {
                      "description": "required non-negative tax rate percentage (query)",
                      "type": "string"
                    },
                    "tip_rate": {
                      "description": "required non-negative tip rate percentage (query)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "subtotal",
                    "tax_rate",
                    "tip_rate"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "formula": {
                      "description": "Formula used for the calculation",
                      "type": "string"
                    },
                    "scope_note": {
                      "description": "What this data covers and what it leaves out",
                      "type": "string"
                    },
                    "subtotal": {
                      "description": "Subtotal before adjustments",
                      "type": "number"
                    },
                    "tax_amount": {
                      "description": "Tax amount",
                      "type": "number"
                    },
                    "tax_rate_percent": {
                      "description": "Tax rate, as a percentage",
                      "type": "number"
                    },
                    "tip_amount": {
                      "description": "Tip amount",
                      "type": "number"
                    },
                    "tip_rate_percent": {
                      "description": "Tip rate, as a percentage",
                      "type": "number"
                    },
                    "total": {
                      "description": "Total number of matching items",
                      "type": "number"
                    }
                  },
                  "required": [
                    "subtotal",
                    "tax_rate_percent",
                    "tip_rate_percent",
                    "tax_amount",
                    "tip_amount",
                    "total",
                    "scope_note"
                  ],
                  "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": "2026-10-18T23:45:09.249Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-18T23:45:08.97Z"
    },
    "resource": "https://saylorinnovations.com/api/tax/tip?",
    "serviceName": "Saylor Innovations  Tip, Tax, an",
    "tags": [
      "tax",
      "sales-tax",
      "included-tax",
      "tip",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Tip, tax and total bill calculator from subtotal, tax rate and tip rate"
}

What the leaf hashes

{"body":"11bed7df22eaaab336904359ee2ab781d58994f5041f2db26c3291e30f86593d","id":120681,"kind":"listing","method":"baseline/1","observed_us":1793025618463163,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/tax/tip?","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. 0x9ebec5d49622f785615139e69ee2031845b245a9d708ecb7a6371b97b60eec39
  2. 0xb21b57a919ffdb7571c6f899bf8cbff854ba72320ce9c099e1ef97d2d87df12a
  3. 0x49bef7052ab779d09aa6d10172f09591cbcadf793e48b8a5109d5e8537d259c1
  4. 0x4dda625fe74a56a6be0ce4cdcf36725210c0140b1f62c75859fbe2e4da176619
  5. 0xf223ad2b1669db825d4c3d5de5da4e34ba8545d6981c5650d2c42f7e97c3ab58
  6. 0xb8e0271ad89d61fff3b6fc438861c1c4cb0f8485e71e8e80d29bd2ee4a0f29e9
  7. 0xa96722c0d71cba5a64d48e434f16521ec8490cb84f79d4974a9c0808cf04083d
  8. 0x6962b7258b57766d84303bef3d169981857326109012428727c4391a720a6d0a
  9. 0x5573b8b6e184b92c8cd3bb08d1b599ffdabe2b878c370a25c0dd4427e8004df1
  10. 0x09d2096f0041d239aabb289d63946d2f56336baf48a26fe3cc25b86c245adf8d
  11. 0xcf41009271d76f70a486c0f32eb0d9e4d76bad43d622f4b5d56f18872edb19e1
  12. 0x73cca5e5ba14c0aaa799d5324b89eb846e3c5546aab3b2cda0c05c5eeaa03168
  13. 0x99a4e0f8b23989f58b564c1b6e419578b4388f6e0dbf6e50177c1bd476302d0e
  14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
  15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
  16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
  17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON