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Plasma Explained: Early Ethereum Layer-2 Scaling – Overview of Plasma’s design, batching transactions off-chain with fraud proofs, and the security trade-offs that shaped later rollup approaches.

An Ethereum block bundles validated transactions, state changes, fees and smart contract calls. Validators finalize blocks, chaining them to securely order and record network activity on the blockchain.

NFTs (non-fungible tokens) are blockchain-based digital tokens that certify ownership and uniqueness of digital assets-art, music, virtual real estate-enabling secure transfer, provenance, and scarcity.

Liquid staking lets ETH holders earn staking rewards while keeping liquidity. stETH tokens (e.g. from Lido) represent staked ETH, are tradable and yield-bearing, enabling DeFi access without unbonding.

DeFi on Ethereum delivers permissionless financial services via smart contracts-lending, decentralized exchanges, stablecoins-enabling transparent, programmable, and interoperable finance without central intermediaries.

ERC-1155 is a versatile multi-token Ethereum standard enabling efficient management of fungible, non-fungible, and semi-fungible assets in a single contract, improving gas efficiency and batch transfers.

Most NFTs use the ERC-721 standard, which defines unique non-fungible tokens on Ethereum. ERC-721 enables distinct ownership, provenance and transferability for one-of-a-kind digital assets.

Learn how Ethereum staking works: lock ETH to help secure the network and earn rewards. Explore validator roles, risks, lock-up periods, and practical steps to stake safely for steady passive income.

Soulbound tokens (SBTs) are non-transferable NFTs that bind credentials and identity to a wallet, enabling verifiable reputation, credentials, and governance while preventing market transferability.

zk-Rollup combines off-chain transaction batching with zero-knowledge proofs to validate state changes on-chain, boosting scalability and security while minimizing gas costs and latency.