Sign hash

Signs an arbitrary 32 byte hash with the given EVM account.

POST /v2/evm/accounts/{address}/sign

Sign hash

cURL

curl --request POST \
  --url https://api.cdp.coinbase.com/platform/v2/evm/accounts/{address}/sign \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Wallet-Auth: <x-wallet-auth>' \
  --data '
{
  "hash": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"
}
'

200

{
  "signature": "0x1b0c9cf8cd4554c6c6d9e7311e88f1be075d7f25b418a044f4bf2c0a42a93e212ad0a8b54de9e0b5f7e3812de3f2c6cc79aa8c3e1c02e7ad14b4a8f42012c2c01b"
}

Authorizations

Authorization · string · header · required

A JWT signed using your CDP API Key Secret, encoded in base64. Refer to the Generate Bearer Token section of our Authentication docs for information on how to generate your Bearer Token.

Headers

X-Wallet-Auth · string · required

A JWT signed using your Wallet Secret, encoded in base64. Refer to the Generate Wallet Token section of our Authentication docs for more details on how to generate your Wallet Token.

X-Idempotency-Key · string

An optional string request header for making requests safely retryable. When included, duplicate requests with the same key will return identical responses. Refer to our Idempotency docs for more information on using idempotency keys.

Required string length: 1 - 128

Path Parameters

address · string · required

The 0x-prefixed address of the EVM account.

Pattern: ^0x[0-9a-fA-F]{40}$

Body

application/json

hash · string · required

The arbitrary 32 byte hash to sign.

Example:

"0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"

Response

200

application/json

Successfully signed hash.

signature · string · required

The signature of the hash, as a 0x-prefixed hex string.

Example:

"0x1b0c9cf8cd4554c6c6d9e7311e88f1be075d7f25b418a044f4bf2c0a42a93e212ad0a8b54de9e0b5f7e3812de3f2c6cc79aa8c3e1c02e7ad14b4a8f42012c2c01b"