You open a wallet, try to swap two tokens, and Ethereum asks you to pay a fee. A few minutes later, someone else sends ETH and appears to pay much less. Both…
A Layer 2 network can look like an independent blockchain. It has transactions, accounts, applications, blocks and its own fees. But its…
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 blockchain has an unusual coordination problem. Thousands of computers may hold copies of the same ledger, yet there is no central…
A smart contract is not a digital version of a paper contract. It is a program deployed to a blockchain that can…
