POST
/
v2
/
evm
/
accounts
/
{address}
/
sign
Sign a hash
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"
}'
{
  "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 UUID v4 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: 36

Path Parameters

​
address
string
required

The 0x-prefixed address of the EVM account.

Body

application/json
​
hash
string
required

The arbitrary 32 byte hash to sign.

Example:

"0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"

Response

Successfully signed hash.

​
signature
string
required

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

Example:

"0x1b0c9cf8cd4554c6c6d9e7311e88f1be075d7f25b418a044f4bf2c0a42a93e212ad0a8b54de9e0b5f7e3812de3f2c6cc79aa8c3e1c02e7ad14b4a8f42012c2c01b"