How Many Bitcoins Exist? Only 21 Million Ever
bitcoin’s protocol caps supply at 21 million coins. New bitcoins are released through mining and halvings; about 19.3 million exist today, with the final units to be mined around 2140.
Sending Bitcoin to Wrong Address: Loss Unless Returned
bitcoin transactions are irreversible: sending to the wrong address usually means permanent loss unless the recipient voluntarily returns funds. Always verify addresses, use address books and small test transfers first.
Bitcoin for Everyday Purchases: Growing but Uneven
bitcoin use for everyday purchases is expanding globally, driven by apps and payment tools, but adoption remains uneven across regions and merchants due to fees, volatility, and regulatory hurdles.
How to Earn Bitcoin: Mining, Work, and Sales
Learn practical ways to earn bitcoin: mine with hardware or join pools, get paid for freelance work or salaries, and sell goods or services for BTC. Understand fees, taxes, and security risks.
What Is Bitcoin: Decentralized Digital Currency Explained
bitcoin is a decentralized digital currency enabling peer-to-peer transfers without intermediaries, secured by blockchain and cryptography, offering transparency, limited supply, and programmable transactions.
Buying Bitcoin: Exchanges, Peer-to-Peer, and ATMs
Learn how to buy bitcoin safely via exchanges, peer-to-peer platforms, and crypto ATMs. Compare fees, verification, payment methods and security to choose the best option for convenience and privacy.
How Secure Is Bitcoin? Security Relies on Private Keys
bitcoin’s protocol is cryptographically robust and blockchain consensus prevents double-spending. True security depends on protecting private keys: loss or theft hands attackers full control of funds.
What Is a Bitcoin Node? How Nodes Validate and Relay
A bitcoin node is a computer running software that enforces protocol rules, validates transactions and blocks, and relays data across the network, helping secure decentralization and consensus.
Bitcoin Transactions Are Irreversible Once Confirmed
Once bitcoin transactions receive confirmations and are added to the blockchain, they become permanent and irreversible. Users must verify addresses and amounts before sending, as recovery is practically impossible.
Bitcoin: Deflationary by Design with 21 Million Cap
bitcoin is deflationary by design: supply capped at 21 million coins, halving events reduce new issuance, and diminishing inflation contrasts fiat systems with adjustable money supply.