HMAC-SHA256 signature (hex-encoded).
Unique request nonce (hex encoded, max 100 characters).
QFEX API Authentication requires four headers:
All four headers are required for authentication.
Signature Generation:
${nonce}:${unix_ts} and compute an HMAC-SHA256 using your secret key.Important: The signature itself must be hex-encoded before being sent in the x-qfex-hmac-signature header.
Unix timestamp (seconds since epoch).