Wallet Import | Format (wif)

A 4-byte hash (calculated using double SHA-256) used to detect transcription errors.

Modern wallets prefer seed phrases (12/24 words) for backups. WIF is mainly used for sweeping single private keys (e.g., from old paper wallets) or troubleshooting. wallet import format (wif)

If a wallet doesn’t detect the format correctly, a WIF key might generate a different address than expected, causing panic. A 4-byte hash (calculated using double SHA-256) used

(Note the leading 5 or L / K – this tells you the type at a glance.) wallet import format (wif)