An attack where someone spends the same cryptocurrency twice. Blockchain consensus mechanisms are specifically designed to prevent this. If you accept unconfirmed transactions, you're vulnerable to double-spend attacks.
The method a blockchain uses to agree on which transactions are valid and in what order.
Application Binary Interface.
A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.
The way Ethereum and many other chains track balances.
A service or protocol that uses EigenLayer's restaked ETH for its security instead of bootstrapping its own validator set.
An infrastructure layer that unifies liquidity and state across multiple rollups and chains.
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