Unspent Transaction Output. Bitcoin's model for tracking ownership. Instead of account balances, Bitcoin tracks individual coins from past transactions that haven't been spent yet. When you send BTC, you consume UTXOs and create new ones. It's more like spending physical cash than using a bank account.
The first cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto.
A transfer of value or data recorded on a blockchain.
The way Ethereum and many other chains track balances.
Application Binary Interface.
A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.
The Ethereum standard for account abstraction without changing the core protocol.
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