Understand crypto.One chapter at a time.

The next generation of the internet, built on blockchain technology. Web3 envisions a decentralized internet where users own their data, digital assets, and identities — contrasted with Web2 where platforms like Facebook and Google own user data.

The practice of holding your own cryptocurrency private keys rather than leaving assets on an exchange or third-party custodian. Self-custody means you have full ownership and responsibility for your crypto.

A secret cryptographic key that proves ownership of a blockchain address and authorizes transactions. Never shared with anyone. If someone obtains your private key, they have full control of your funds.

Market Capitalization. The total value of all units of a cryptocurrency in circulation, calculated as: Current Price × Circulating Supply. Used to compare the relative size of different cryptocurrencies.

A platform where users can buy, sell, and trade cryptocurrencies. Exchanges can be centralized (operated by a company, like Coinbase) or decentralized (operating via smart contracts, like Uniswap).

A programmed event in Bitcoin's code that cuts the block reward in half approximately every four years (every 210,000 blocks). Halvings reduce the rate of new Bitcoin supply, making Bitcoin progressively more scarce.

A physical device that stores cryptocurrency private keys offline, disconnected from the internet. Hardware wallets are the most secure way to store significant amounts of cryptocurrency long-term.

A digital or virtual form of currency secured by cryptography and operating on decentralized blockchain networks. Unlike government-issued money, most cryptocurrencies are not controlled by any central authority.