BloFin — read-only API key
Uses the Tax Report API key type, which is read-only by design. You create the key on blofin.com; it takes a couple of minutes.
- You will end up with
- API key · Secret · Passphrase
Log in to blofin.com.
Click your profile icon, then choose API.
Click Create API Key.
Select Tax Report API as the key type.
Note: Tax Report API grants read-only access to your trade history — exactly what verification needs, and nothing more.
Set an API key name. Anything works — "preuval" is a good default.
Check only the Read permission.
Set a passphrase.
Warning: Write the passphrase down now. BloFin will not show it again, and verification needs it alongside the key and secret.
Leave the IP whitelist empty.
Note: An IP whitelist restricts the key to those addresses. Leaving it empty keeps the key usable from anywhere; fill it in only if you know which addresses to allow.
Complete 2FA verification.
Copy the API key and secret.
Warning: The secret is displayed once and never again. Copy it before closing the dialog — if you lose it you have to delete the key and start over.
In Preuval: select BloFin, set the environment to Production, and paste the key, secret and passphrase.
Save the credentials somewhere safe
Copy each value into a password manager as the exchange shows it. Secrets are displayed once, and a half-copied secret fails authentication in a way that looks identical to a wrong one. Preuval never writes your keys to disk — they are used for the run and discarded.