Blockchain

When working with Blockchain, a distributed ledger technology that records transactions across a network of computers. Also known as DLT, it powers everything from Bitcoin to DeFi platforms.

One of the biggest challenges today is high transaction costs, and that’s where Layer 2 scaling, off‑chain solutions that bundle many transactions before settling on the main chain. It blockchain ecosystems by cutting gas fees and boosting speed. In practice, rollups like Optimism or zkSync let users trade, mint NFTs, or claim airdrops without waiting minutes for confirmation.

Speaking of NFTs, a NFT marketplace aggregator, a platform that searches multiple NFT exchanges to find the best price and lowest fee has become a staple for collectors. This aggregator enables users to compare listings across OpenSea, Rarible, and newer chains, making the whole blockchain marketplace more efficient.

Another hot trend is the crypto airdrop, a distribution of free tokens to wallet holders, usually to bootstrap a new project. Airdrops rely on the immutable nature of blockchain to verify eligibility and prevent double‑spending. They serve as both a marketing tool and a way to seed liquidity for emerging protocols.

When you trade or stake, you’ll often interact with a crypto exchange, a service that lets users buy, sell, or swap digital assets, often offering advanced features like futures and staking. Exchanges sit at the crossroads of regulation, security, and user experience, and they require robust blockchain infrastructure to keep funds safe and transactions fast.

Security remains a core concern. Real‑world 51% attacks on smaller chains show that anyone with enough hash power can rewrite history, underscoring why decentralized consensus and strong network participation matter. Understanding these risks helps you pick the right layer 2 or exchange, and it informs how you evaluate airdrop promises.

What You’ll Find Below

Below is a curated list of articles that dive deeper into each of these topics—step‑by‑step guides on claiming airdrops, detailed reviews of exchanges, breakdowns of layer‑2 rollups, and security analyses of attacks. Use them to sharpen your skills, stay ahead of market moves, and make smarter decisions in the fast‑changing blockchain space.