A network where nodes talk to each other directly instead of through a single server.

A DLT where only approved nodes validate. Common in bank and enterprise pilots, unlike public permissionless chains.

A secret number that authorizes spends. If it leaks, the address is compromised.

A scheme to show a wallet is one human, used to fight airdrop farming and bots.

The key that can replace a contract's implementation. A centralized upgrade path.

The counterpart to a private key. Addresses are usually a hashed or encoded form of the public key.