Blockchain

Blockchain is a decentralized digital ledger that records transactions across a network of computers in a secure, transparent, and tamper-resistant way. Instead of relying on a single central authority, blockchain distributes data across many participants, making it nearly impossible to alter past records without consensus.

Each “block” contains a set of verified transactions, and once linked together in chronological order, they form a permanent “chain.” This technology powers cryptocurrencies like Bitcoin and Ethereum, but its applications go far beyond digital money—enabling innovations in supply chain tracking, smart contracts, digital identity, and decentralized applications (dApps).