Performs a soft (syntactically-only) validation of Bitcoin address (both Base58 and Bech32, both Mainnet and Testnet). It takes for granted that you have a stronger (maybe server side) Checksum ...

A bitcoin address is in fact the hash of a ECDSA public key. Since anyone can know the public key and really the Bitcoin address is the public key, it’s perfectly OK to give out the Bitcoin address.

A Bitcoin address is an alphanumeric string that is specific to a Bitcoin transaction’s destination. These addresses usually begin with “1,” “3” or “bc1” and are case-sensitive.

The creator of the address can even include multiple customized redeem scripts to choose from in order to spend the bitcoin later. P2TR addresses are 62 characters long, and they use Bech32m encoding, ...

In the situation above, your Bitcoin Cash would be sent to a Bitcoin Cash address which is identical to the BTC address – and would be accessible by whoever holds the private key.

A vanity Bitcoin address is a customized BTC address with a specific pattern or word within its 26–35 character alphanumeric sequence.