What Is a Blockchain?
A blockchain sounds complicated, but the basic idea is surprisingly simple: it is a shared record of transactions.
About a 2–3 minute readThink of it as a shared record
A blockchain is a digital ledger. A ledger is simply a record of what happened — for example, one address sending an asset to another address.
Instead of that record living only on one company’s computer, copies are maintained across a network.
Why “blocks” and “chain”?
Transactions are grouped into batches called blocks. New blocks are linked to the history that came before them, creating a chain of records.
Who keeps it running?
Different blockchains use different systems, but networks use computers to check transactions and agree on the state of the ledger. On Solana these participants include validators.
You do not need to understand the technical mechanics yet. The key point is that the network checks and records transactions.
What can you see?
Public blockchains let anyone inspect transaction data using a blockchain explorer. You can look up addresses, transactions and tokens without needing access to someone’s wallet.
When I created Griff Coin, I could use Solana explorers to verify that the token existed, inspect its mint address and check transactions on-chain. That was one of the first times the idea of a blockchain stopped feeling theoretical.
Blockchain does not mean risk-free
A blockchain can provide a public record, but it does not tell you whether a token is valuable, whether a project is trustworthy or whether a transaction is a good idea.
You’ve learned the basics
That is enough for now. Pick another short guide when you are ready.
← BACK TO THE LEARNING LIBRARY