Start with the essentials. Build your confidence, one guide at a time.
Anyone can copy a digital record. Anyone can also claim that their copy is the correct one. So how can a payment network agree on who paid whom when there is no…
You open a wallet, try to swap two tokens, and Ethereum asks you to pay a fee. A few minutes later, someone…
A smart contract is a program stored on a blockchain that executes predefined rules when it receives the right inputs. Instead of…
A blockchain can do more than record who owns what. On programmable blockchains such as Ethereum, it can also store and execute…
A smart contract is not a digital version of a paper contract. It is a program deployed to a blockchain that can…
A crypto wallet is often described as a digital version of the wallet in your pocket. That analogy is convenient, but technically…
A seed phrase is a human-readable backup that can be used to reconstruct the cryptographic keys behind many self-custody wallets. It is…
A crypto wallet does not store cryptocurrency in the way a physical wallet stores cash. The assets remain recorded on a blockchain.…
A blockchain is a shared record maintained by a network of computers. Instead of asking one company or institution to store the…
A crypto transfer is not simply “sending a coin” from one app to another. You are asking a specific blockchain to update…
A custodial wallet asks a company to control the keys associated with your crypto. A non-custodial wallet gives that control—and the responsibility…
Learn how to check a transfer’s asset, network, recipient and fee, and distinguish blockchain execution from exchange crediting.
Understand where crypto is recorded, what a wallet controls, and how addresses, private keys and recovery phrases fit together.
