Evidence row 119918

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://saylorinnovations.com/api/fun/coinflip
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 09abcb1019535adff3bd57c09531f37f8e6c47998a9f1e91ad921a070c4d19a7
Leaf: 0x50edd156742ce5f52a24772e177bb673eccebe5ec4f255718d4aa4f0b069e773

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/fun/coinflip"
    ]
  ],
  "name": "Saylor Innovations Utilities",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:fun:coinflip",
          "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": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
          "memo": "saylor:fun:coinflip",
          "reference": "4kv8vyPzYEfHcVy1Q1PPYJQgCA8Utxu47YNY7xJKvLCR",
          "session": "eyJhcnRpY2xlSWQiOiJmdW46Y29pbmZsaXAiLCJyZWZlcmVuY2UiOiI0a3Y4dnlQellFZkhjVnkxUTFQUFlKUWdDQThVdHh1NDdZTlk3eEpLdkxDUiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyMTc3ODkwNDI4fQ.Z37Gri21yqPmY0ZvzQNFUzXBFZZB79xpK8gNQXPiiFk"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Coin flip - returns result heads or tails from a cryptographically secure random source, with a fairness flag and the entropy source name",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "fair": true,
              "result": "tails",
              "source": "crypto.randomInt"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "POST",
                    "PUT",
                    "PATCH",
                    "DELETE",
                    "HEAD"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "fair": {
                      "description": "Always true: uniform 50/50 outcome",
                      "type": "boolean"
                    },
                    "generated_at": {
                      "description": "Time this response was generated (UTC)",
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "result": {
                      "description": "Outcome of the flip: heads or tails",
                      "enum": [
                        "heads",
                        "tails"
                      ],
                      "type": "string"
                    },
                    "source": {
                      "description": "Random source used (Node crypto)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "result"
                  ],
                  "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": "2026-10-16T19:09:30.481Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-16T19:09:30.133Z"
    },
    "resource": "https://saylorinnovations.com/api/fun/coinflip",
    "serviceName": "Saylor Innovations Utilities",
    "tags": [
      "coin flip",
      "heads or tails",
      "random",
      "x402 test",
      "utility"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Coin flip - returns result heads or tails from a cryptographically secure random source, with a fairness flag and the entropy source name"
}

What the leaf hashes

{"body":"09abcb1019535adff3bd57c09531f37f8e6c47998a9f1e91ad921a070c4d19a7","id":119918,"kind":"listing","method":"baseline/1","observed_us":1793025616939651,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/fun/coinflip","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

0x50edc9dd4665985e55bbf2b326e3c683d9f8b2e927f740843cae76e09b028b3a
0x02b033845cf11eeb657d6dc62cb83aa720ced0138f0b3060981869e957b60bd3
0xfe5ecded5fffb646e09f6da462132103a41615e916809a920d31d77592701274
0xc09392c790f792d437f0be8bfb3448b3a9d3aa7ff14d661f91f9236eca8a0189
0x4fb0687bb678cbed52cd76fed3abff3e89de6c91c704b877c26c5c2da4770ad8
0xbe13de4bb7cc300dbd903eb675fe31812264f795031843f1852cbb44a751841a
0xa5bb72ce081680118a04a27e5779098ce3690469977e3b315afad222d0f14612
0x0787aa604e3a9bccb748d14c16c68163f10d6034cc4d8b02782671a08de7ee6b
0x417ae96c21259e0ba92e9c16e22f6cdcea1d55df56b3cb0c4812519bf06e866e
0x1cf289732577ec7d4b7786636bf1c834b739571451a5cc67e3aac33256c9be46
0xfa039eb62e5d0ae9f7aaaafb0fcbceacfa661b07228233046b9a9af94e547a55
0xecaf47ba75097c34f2d3c4d62539dace0db8b484bf08941a9259e2d1e8ccea77
0xf7d2cf278e5d2768b8bdb70730c378877cf7165d8efcbec8bcd3282fdc50d177
0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON