Definition
A security setup that requires multiple private keys to authorize a transaction. For example, a 2-of-3 multisig needs any 2 of 3 keys to spend Bitcoin.
Related Terms
Mining
The process of using specialized hardware to solve mathematical puzzles, validate transactions, and add new blocks to the blockchain in exchange for Bitcoin rewards.
Node
A computer running Bitcoin software that participates in the network by relaying transactions and blocks. Full nodes validate the entire blockchain independently.
Mempool
The waiting area for unconfirmed Bitcoin transactions. When you send Bitcoin, your transaction sits in the mempool until a miner includes it in a block.
Non-Custodial Wallet
A wallet where you control your own private keys. Gives you full sovereignty over your Bitcoin but requires you to manage your own security.
Lightning Network
A second-layer payment protocol built on top of Bitcoin that enables fast, low-cost transactions through payment channels. Ideal for everyday purchases.