What Is a Blockchain? Explained Simply

A blockchain is a shared record book kept by thousands of independent computers, where the past is practically impossible to change.

Records are grouped into blocks, and each block carries a fingerprint of the previous one. If someone edits an old record, the fingerprints stop matching and the rest of the network rejects that version. That is the core property: immutability.

Every participant keeps a copy, so there is no owner and no single point of failure. New blocks are added by shared rules: miners find them in bitcoin, staked validators produce them in Ethereum and Solana.

Because it is open, anyone can verify transactions. On Hyperliquid, which runs its own blockchain, the positions and trades of any wallet are visible.

See it on In-Crypto

Hyperliquid whale positions from the chain Bitcoin halving

More terms

Token Stablecoin Crypto exchange Trading Spot vs futures Margin trading Leverage Long and short Short squeeze Liquidation Stop-loss and take-profit Limit vs market order Market maker Crypto whale Altcoin Perpetual futures DeFi and DEX

Frequently asked questions

Why do we need blockchain?

So that people who do not trust each other can share one ledger without a middleman: transfers, token ownership, smart contracts.

Can a blockchain be hacked?

Rewriting the history of a large chain is nearly impossible: you would need more than half of the network's power. Hacks usually target exchanges, wallets and smart contracts, not the chain itself.