# Bitcoin Address Validator

> Learn what address-format validation can and cannot tell you.

Mode: Runs locally.

## Supported behavior

Testnet and signet share address encodings. A valid address does not prove ownership.

## Security and privacy

Calculations run locally. Check the network and inputs. Estimates of fees, policy acceptance, prices and future block timing are not guarantees.

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