Level 1 · Beginner
Start from the basics: ledgers, signatures, wallets and the main uses of cryptoassets. No technical background required.
Your modules · Beginner
12 modules, in a suggested learning order.
What is a blockchain?
A blockchain is a shared record whose updates are grouped into blocks linked by cryptographic fingerprints.
Hashes, keys and signatures
A cryptographic hash maps data to a fixed-length fingerprint.
Bitcoin UTXOs explained
Bitcoin records unspent transaction outputs, or UTXOs.
Ethereum accounts and transactions
Ethereum maintains shared state including balances, contract code and storage.
Chainlink and the oracle problem
A lending contract needs collateral prices, but its blockchain does not natively know every market price.
Stablecoins: reserves, pegs and redemption
A stablecoin aims to track a reference value, often a currency.
Hot, warm and cold wallets
A wallet manages access to assets recorded on a network.
Aave lending pools and aTokens
Aave is a liquidity protocol deployed on multiple networks.
Staking rewards and the risks behind the rate
Staking commits assets to a proof-of-stake mechanism, directly or through a service.
Read a transaction explorer
An explorer presents an indexed view of a network.
Recognise a wallet scam
Attackers can imitate a support agent, a familiar website or a message from a friend.
Coin, token, network and address
A network defines an execution and settlement environment.
Explore another level
Beginner
Start from the basics: ledgers, signatures, wallets and the main uses of cryptoassets. No technical background required.
12 modules · View path →02 · IntermediateIntermediate
Connect the mechanisms: transactions, fees, oracles and DeFi. Work through calculations and practical decisions after the foundations.
35 modules · View path →03 · AdvancedAdvanced
Analyze system design, failure scenarios, custody and infrastructure. These lessons assume the linked intermediate concepts.
17 modules · View path →Check what you have learned
Six questions with explanations and links to revisit missed concepts.
Take the path review →