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Definition
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.
Related Terms
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 Ethereum standard for account abstraction without changing the core protocol.
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.
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