Structured education across every format and skill level · 136 guides
The mempool explained simply: where your crypto transaction waits before it is confirmed, why fees decide the queue, and what to do if yours is stuck.
A hard fork explained simply: a rule change that old software will not accept, why it can split a coin in two, and what Bitcoin Cash actually was.
A 51% attack explained simply: what someone with most of a network's mining power can do, what they cannot do, and which coins it has happened to.
Hash rate explained simply: what it measures, why a higher number means a safer Bitcoin network, and what it says about mining competition.
What is a block in a blockchain? A batch of transactions written to one page of the shared record, sealed and linked to the page before it.
Proof of stake explained simply: how Ethereum validators lock up coins as a deposit, why cheating costs them money, and how it replaced mining in 2022.
Proof of work explained simply: how Bitcoin miners spend electricity to agree on one shared history, and why that makes rewriting the past so expensive.
A testnet is a practice copy of a blockchain where coins are free and worthless. What testnets are for, how to use one, and why testnet coins are never sold.
A mainnet is the live version of a blockchain, where coins have real value and transactions are permanent. What mainnet means and what a mainnet launch is.
Open source in crypto means the code is published for anyone to read and check. Why Bitcoin and Ethereum work that way, and why open does not mean safe.
A blockchain oracle feeds outside data to smart contracts. Why a blockchain cannot look up a price on its own, and how Chainlink fills the gap.
A node is a computer that keeps its own copy of a blockchain and checks every transaction. What nodes do, why the copies matter, and how to run one.
