Evidence row 123102

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

Kind: listing
About: source_record x402_bazaar:https://twin.unykorn.org/eth-message-hash
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 939a5b67de5c5e18e0cc9604ffaac9bc9a7944c4b20c7d89e42cd910e0be8fa7
Leaf: 0x50649e6dee0360dd21f5747f0cf0bf198da0ebe4f3b424541eb2dbe67e913c50

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://twin.unykorn.org/eth-message-hash"
    ]
  ],
  "name": "twin.unykorn.org/eth-message-hash",
  "owner_address": "0x7d9a65d06dcc435a52d5880c6310bd6e96c156db",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
        "scheme": "exact"
      }
    ],
    "description": "EIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "params": {
                "message": "Sign in to Example at 2026-09-20T00:00:00Z"
              }
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "generated_at": "<iso8601>",
              "ok": true,
              "receipt": {
                "amount_usd": 0.003,
                "receipt_id": "g402-<16hex>",
                "tx_hash": "0x<64hex>"
              },
              "type": "eth-message-hash"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "params": {
                      "properties": {
                        "message": {
                          "description": "UTF-8 text, up to 48 KiB",
                          "maxLength": 49152,
                          "type": "string"
                        }
                      },
                      "required": [
                        "message"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "params"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:13:07.457Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:13:07.349Z"
    },
    "resource": "https://twin.unykorn.org/eth-message-hash",
    "tags": [
      "Ethereum",
      "ABI",
      "EVM",
      "deterministic",
      "developer tooling"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "EIP-191 digest of a message (what personal_sign actually signs) — Genesis402 / UnyKorn Operator Network"
}

What the leaf hashes

{"body":"939a5b67de5c5e18e0cc9604ffaac9bc9a7944c4b20c7d89e42cd910e0be8fa7","id":123102,"kind":"listing","method":"baseline/1","observed_us":1793025622619487,"prev":null,"subject":"x402_bazaar:https://twin.unykorn.org/eth-message-hash","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON