What Is a Blockchain?
A blockchain is a distributed database that maintains a continuously growing list of records (blocks) linked together cryptographically. Each block contains a timestamp, transaction data, and a cryptographic hash of the previous block, creating an immutable chain.
How Blockchains Work
When a new transaction occurs, it is broadcast to a network of peer-to-peer computers (nodes). These nodes validate the transaction using consensus mechanisms (proof-of-work, proof-of-stake, etc.). Once validated, the transaction is combined with others into a new block and permanently added to the chain. Because every node holds a copy of the entire chain, altering any past record would require changing every subsequent block across a majority of nodes — making tampering virtually impossible.
Why It Matters for Traders
Blockchain transparency enables on-chain analytics — the ability to track whale movements, exchange flows, smart money behavior, and network health metrics. These on-chain signals provide insights unavailable in traditional markets and give crypto traders a unique informational edge.