Ethereum & Smart Contracts · 07 Oct · 10 min read
What Is a Smart Contract?
A smart contract is a program stored on a blockchain that runs exactly as written when called. Learn how they work, what they power and where they fail.
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Learn Crypto
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What Is Restaking?
Restaking reuses staked ETH to secure other services for extra rewards and extra slashing risk. How it works, what liquid restaking tokens are and the risks.
Optimistic Rollups vs ZK Rollups
Optimistic rollups assume batches are valid and allow challenges; ZK rollups prove every batch. Compare withdrawals, costs, compatibility and the risks of each.
What Is MEV?
MEV is the profit made by choosing which transactions go into a block and in what order. How it works, what a sandwich attack is and how to protect trades.
What Is Liquid Staking?
Liquid staking lets you stake ETH and get a token you can trade or use while it stays staked. How it works, why the token can trade below ETH and the risks.
How to Stake ETH: Solo, Pooled and Exchange Options
Stake ETH by running a validator, joining a pool or liquid staking protocol, or using an exchange. Compare the steps, control, minimums and risks of each route.
What Is a Gas Limit and Why Do Transactions Fail?
The gas limit caps how much computation an Ethereum transaction may use. See how gas fees are calculated, why transactions run out of gas and failure costs.
Ethereum vs Solana
Ethereum scales with layer 2 rollups; Solana runs everything on one fast chain. Compare their designs, fees, reliability record and the uses each suits.
Ethereum Staking Risks and Mistakes
The Ethereum staking mistakes that cost the most, from slashing and token depegs to custody and exit queues, and what to do instead of each one.
What Is Slashing in Ethereum Staking?
Slashing destroys part of a validator's stake and forces it out for provably breaking Ethereum's rules. What triggers it, how it grows and how to avoid it.
What Are Ethereum Rollups?
Rollups run transactions off Ethereum's main chain and post compressed data and proofs back to it. How they work, why fees are lower and what risks remain.
What Was the Ethereum Merge?
On September 15, 2022, Ethereum swapped mining for proof of stake without stopping the chain. Learn how the Merge worked, what it changed and what it did not.