> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blockchain wallets

> Understand addresses, private keys, seed phrases, signing, and wallet custody.

## What a wallet does

A blockchain wallet helps users manage keys and sign messages or transactions. Assets generally remain recorded on the blockchain; the wallet controls the credentials that authorize changes.

## Key concepts

* **Address:** a public identifier used to receive assets or identify an account.
* **Private key:** secret cryptographic material used to authorize actions.
* **Seed phrase:** a recovery representation used by many wallet systems.
* **Signature:** cryptographic proof that an authorized key approved a message.

<Warning>Never share a private key or seed phrase. Legitimate support teams do not need them.</Warning>