Address
Update shuda Aug 17, 2026 What Is an Address?
An address is a unique alphanumeric string that identifies a specific
wallet on a
blockchain network, used to send and receive digital assets.
Similar to how an email address identifies where to send a message, a blockchain address identifies where to send cryptocurrency or other digital tokens. Each address is generated from a public key using cryptographic hashing, and only the holder of the corresponding private key can authorize transactions from that address.
How Blockchain Addresses Work
Blockchain addresses are derived from public-key
cryptography. A user generates a key pair consisting of a public key and a private key. The public key is
hashed using a network-specific algorithm to produce the address, which can be shared openly. The private key remains secret and is required to sign outgoing transactions.
Most blockchain addresses appear as long strings of letters and numbers. For example, a
Bitcoin address might look like:
bc1qeppvcnauqak9xn7mmekw4crr79tl9c8lnxpp2k
Meanwhile, an
Ethereum address typically starts with 0x followed by 40 hexadecimal characters, such as:
0x77dce4813eC15650e57E1b999c197aad00bEc1c2.
Addresses are pseudonymous, meaning they do not directly contain personally identifiable information. However, on public blockchains, all transactions associated with an address are visible to anyone. Tools called
block explorers allow users to look up address histories, balances, and transaction records.
Types of Blockchain Addresses
Different blockchain networks use distinct address formats.
Bitcoin supports several formats, including Legacy addresses starting with 1,
SegWit addresses starting with 3, and Bech32 addresses starting with bc1. Other networks, such as
Solana and
Cardano, have their own encoding schemes.
When sending digital assets, it may be important to verify the destination address format matches the intended blockchain network. Sending assets to an incompatible address type could result in permanent loss of funds. Some modern
wallets support multiple address formats across different chains through a single interface, which can help reduce the risk of errors when managing
Bitcoin wallet address formats and other network-specific addresses.