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EIP-712 hash

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Full response envelope

What you receive

Demonstration data only. The paid endpoint returns a fresh result and settlement receipt.

{
  "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
  "service": "crypto.typed-data-hash",
  "version": "1",
  "data": {
    "valid": true,
    "domainSeparator": "0xc167959bdf834486717879a8cd6eb3e12a864d1b1d7dbcecec40455e1b4bc8c8",
    "messageHash": "0xd6a9eadbfb49313d8b83d02d2bb22b916a5b16e6006946c9ca6fa7959d934b3a",
    "signingHash": "0x7433e410d5f2857cb42d0bfd31bc71e8aa553f02ce0eed397927f01dfb46424c",
    "primaryType": "Message"
  },
  "meta": {
    "duration_ms": 42,
    "cached": false,
    "sources": [],
    "warnings": [],
    "next_actions": []
  }
}

Example request

Input JSON

{
  "typed_data": {
    "types": {
      "EIP712Domain": [
        {
          "name": "name",
          "type": "string"
        }
      ],
      "Message": [
        {
          "name": "contents",
          "type": "string"
        }
      ]
    },
    "primaryType": "Message",
    "domain": {
      "name": "API Acre Example"
    },
    "message": {
      "contents": "Hello"
    }
  }
}

Delivery contract

One paid POST

Validate EIP-712 typed structured data and derive its domain separator, message hash, and signing digest.

POST /v1/crypto/typed-data-hash

Inspect validation rules and output schema

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