Day 4/60 — TrustChain Academy Challenge What is Blockchain Technology? Before getting deeper into Web3, it is important to understand one of the technologies that powers much of the ecosystem: Blockchain. So, what exactly is blockchain? Blockchain is a technology for storing and sharing records digitally across multiple computers. Think of it like a digital record book that is shared among many participants instead of being controlled by just one person or organization. But how does it work? Blockchain organizes information into blocks. These blocks are then connected together to form a chain. Each block contains information about the records it stores and is linked to the previous block. This structure makes changing previously confirmed information extremely difficult. Two important concepts behind blockchain are: Ledger A ledger is simply a record of transactions or other information. For example, it can record: • Who sent funds • Who received them • How much was sent • When the transaction happened In simple terms: Ledger = a digital record book. Cryptography Cryptography is a method of protecting information using mathematical techniques. In blockchain, it helps protect transactions, support digital signatures, and verify information. In simple terms: Cryptography = a way of protecting information and verifying its authenticity. Key characteristics of blockchain: Decentralized — control is distributed across participants rather than relying entirely on one central authority. Secure — cryptographic techniques help protect the data. Transparent — depending on the blockchain, transaction information can be publicly verified. Tamper-resistant — changing confirmed records is designed to be difficult. The simple idea: Blockchain = a shared digital record system + cryptography + a network of participants. And this is why understanding blockchain is an important foundation for understanding Web3. #TrustchainAcademyChallenge #60DaysWithTrustchainAcademy @TrustChain0