Bitcoin basics
Bitcoin is a digital asset that can be transferred directly over a public network. This guide explains the essentials without assuming prior cryptocurrency knowledge.
Bitcoin
Bitcoin is a digital monetary system with a limited supply. People can hold and transfer bitcoin without a bank processing each transaction.
Ownership is controlled through cryptographic keys. Losing access to those keys can mean permanently losing access to the bitcoin.
Blockchain
The Bitcoin blockchain is a shared chronological record of transactions. Computers in the network verify new transactions and add them in blocks.
The record is public, but wallet addresses are not automatically the same as verified personal identities.
How a Bitcoin transaction works
A simplified view of what happens when bitcoin is sent.
A transaction is created
The sender specifies a destination address and amount using a wallet.
The network receives it
The signed transaction is shared with computers participating in the network.
Rules are checked
Nodes verify that the transaction follows Bitcoin’s rules and does not spend the same funds twice.
Confirmations accumulate
Once included in a block, later blocks provide additional confirmations.
What beginners should understand
- Bitcoin prices can move sharply in either direction
- Transactions are generally difficult to reverse
- Wallet security and backups are the owner’s responsibility
- Scammers often create urgency or promise guaranteed returns