## Definition

A **wallet address** is a short string of letters and numbers, derived from a public key, that serves as the destination for receiving cryptocurrency. In Bitcoin, an [address](https://en.bitcoin.it/wiki/Address) is what a sender pastes into their wallet to send coins to you. The address itself is public — sharing it does not put your funds at risk — but spending the coins received at it requires the corresponding private key, which must remain secret.

## How It Works

A Bitcoin wallet address is generated by taking a public key, hashing it (typically with SHA-256 followed by RIPEMD-160), adding a version byte and checksum, and encoding the result in a human-readable format. Bitcoin currently has several coexisting address formats: legacy P2PKH addresses starting with `1`, P2SH addresses starting with `3`, native SegWit "bech32" addresses starting with `bc1q`, and Taproot addresses starting with `bc1p`.

Each format encodes the same fundamental idea — a commitment to a script that defines who can spend the coins — but with different efficiency and feature trade-offs. When a sender broadcasts a transaction paying your address, every full node on the network records that an [unspent transaction output](https://developer.bitcoin.org/reference/transactions.html) now exists at that address, redeemable only by someone who can satisfy the spending conditions encoded in the script.

## Why It Matters

For Bitcoin miners, the wallet address is where the block reward and transaction fees ultimately land. Mining software is configured with a payout address that the pool credits with each round of payouts; solo miners encode their own address directly in the [coinbase transaction](https://bitcoin.org/bitcoin.pdf) of every block they mine. Getting the address wrong by even a single character means the funds go elsewhere, irretrievably.

For everyday users, addresses matter because they are the public-facing handle of an otherwise pseudonymous system. Reusing the same address across many transactions weakens privacy by linking unrelated payments to one identity, which is why most modern wallets generate a fresh receive address for every incoming payment and rotate them automatically in the background.

## Related Terms

Wallet addresses connect several Bitcoin building blocks together. The entries below explain the surrounding mechanics and the formats most commonly used today:

- [Bitcoin Wallet](/glossary/bitcoin-wallet) — the software managing addresses
- [Public Key](/glossary/public-key) — the source of the address
- [Private Key](/glossary/private-key) — required to spend received funds
- [Taproot](/glossary/taproot) — the newest address format