Blockchain
Plain English
Think of it as a digital notebook that everyone can see and add to, but no one can erase or change what’s already written. Each page (block) is connected to the previous one, creating a chain of pages (blockchain) that stores information permanently and transparently.
Technical
A distributed, immutable ledger that records transactions across a network of nodes. Each block contains a cryptographic hash of the previous block, timestamp, and transaction data, forming a tamper-evident chain secured by consensus mechanisms.