# Bitcoin Message Sign & Verify

> Understand the difference between message signing and transaction authorization.

Mode: Runs locally.

## Supported behavior

Legacy Bitcoin signed messages for P2PKH only. This does not sign a payment or prove a person's identity.

## Security and privacy

Sensitive inputs and calculations stay on your device. No secrets are sent to the backend or saved in browser storage. Clear the form and result when finished. These key tools have not received an independent security audit; do not use it with real funds.

[Security model](https://qbitcoin.live/security/index.md) · [QBitcoin home](https://qbitcoin.live/index.md)