HOW CRYPTO BLOCKCHAIN WORK
When you transfer crypto coins (like Bitcoin), you're actually updating a digital ledger called a blockchain.
You start by using your wallet to create a transaction — saying, “I want to send 1 BTC to Ali.” This transaction is signed with your private key to prove it's really you. Then, your transaction is broadcast to the network of computers (called nodes).
These nodes check if you really own the coins and if the transaction is valid. Valid transactions are grouped into a block. Then, powerful computers called miners race to solve a complex math puzzle (called proof of work) to add the block to the chain.
Once solved, the block is added to the blockchain, and the transaction becomes permanent and unchangeable. Ali now sees 1 BTC in his wallet. This whole process ensures security, trust, and transparency without needing a bank or middleman.