Blockchain-Basics

Blockchain wallets and smart contracts basics Blockchain wallets are the tools you use to manage digital money and to run programs on the blockchain. A wallet stores keys, not coins. The keys prove you own assets and allow you to sign transactions that move funds or interact with apps on the chain. There are several types of wallets. Hardware wallets are small devices that keep your keys offline. Software wallets are apps on a phone or computer. Custodial wallets are managed by a service, where the company holds your keys for you. Non-custodial wallets give you sole control of your keys, but you are responsible for backups and keeping the device safe. ...

Web3 and Blockchain What It Means for Developers Web3 aims to put more control in the hands of users by running applications on public blockchains. For developers, this shifts the focus from purely server-based logic to client- and contract-driven flows. You write smart contracts that live on-chain, connect them to front ends through wallets, and manage state in a way that is publicly verifiable. The result can be transparent, scalable, and resistant to single points of failure, but it also adds new tradeoffs, like cost, latency, and the need for audit-minded design. ...

Web3 and Blockchain: Beyond the Playful Buzzwords Web3 is a term that gets tossed around a lot. It points toward a future where online services run on platforms owned or controlled by users. The idea is appealing, but the language can be vague. Here is a practical view you can use today. Blockchains act as public ledgers. They record transactions in a way that is hard to alter. Smart contracts are small programs that run when certain conditions are met. Together they let people create apps that work without a single gatekeeper. This can reduce friction in some cases, but it also means you should choose projects that are well designed and secure. ...