Intro to Blockchain and Smart Contracts Blockchain is a shared digital ledger that records transactions across many computers. This design keeps data transparent and resistant to tampering. Each block contains a list of transactions and a link to the previous block, forming a chain. Because many people hold copies of the ledger, changing records requires broad agreement from the network. This is why trust can be built without a central authority. ...
Smart Contracts and Decentralized Apps Smart contracts are self-executing programs that run on a blockchain. They enforce rules, settle agreements, and remove middlemen. Once deployed, they operate with transparency and immutability, which changes how we trust and transact. A decentralized app, or DApp, uses smart contracts as its backbone. It has a user interface for people, but the core logic lives on chain or talks to on‑chain services. DApps cover many areas, from finance to games to voting, and they can work across borders and timezones. ...