
Technology
How Many Bitcoin Are Left to Mine? The 21 Million Cap Explained
Bitcoin's supply is capped just under 21 million. See how halvings produce the cap, why circulating supply differs by source, and what happens in 2140.
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Technology
Bitcoin's supply is capped just under 21 million. See how halvings produce the cap, why circulating supply differs by source, and what happens in 2140.

Technology
Buying and sending bitcoin involves two kinds of fees: what an exchange charges and what the network charges. Learn how each works and how to keep costs down.

Technology
Bitcoin and Ethereum are different networks built for different jobs. Compare their purpose, supply, consensus, smart contracts and uses.

Technology
Proof of work and proof of stake are two ways a blockchain reaches agreement. Here is how each works, what each costs and the trade-offs.

Technology
The Bitcoin halving cuts the miner reward in half every 210,000 blocks. Learn the four halvings so far, why they exist and what they do and don't change.

Technology
A bitcoin address is what you share to receive bitcoin. Learn the four formats, why to use a fresh one each time, and how to avoid address-swapping malware.

Technology
A plain-English walkthrough of transactions, the blockchain, mining and private keys, and how they let strangers agree on who owns what.

Technology
What Bitcoin miners actually do, how proof of work and ASICs function, why mining uses so much energy, and how halvings change the economics.

Technology
The Lightning Network is a second layer on top of Bitcoin built for fast, small payments. Here is how payment channels work and where the trade-offs are.