Learn cryptocurrency & blockchain concepts interactively
Explore the fundamentals of blockchain technology through interactive tools. Understand how data is hashed, chains are formed, transactions work, smart contracts execute, and how information can be hidden in plain sight. All tools run in your browser with no login required.
Understand how blockchain data is chained together using cryptographic hashes. Build chains, visualize how tampering is detected, and learn blockchain security.
Experience cryptocurrency mining in real-time. Adjust difficulty, watch hash calculations, and understand proof-of-work consensus.
Learn how blockchain transactions are organized in Merkle trees. Generate proofs and verify transaction inclusion efficiently.
Build and broadcast cryptocurrency transactions. Learn about UTXOs, inputs/outputs, addresses, and fee calculation.
Interact with smart contracts. Execute functions, watch state changes, calculate gas costs, and learn Solidity concepts.
Hide secret messages in blockchain transactions. Encode messages, export blockchains, import and decode hidden data.
New to blockchain? Start with Hash Chain Visualizer to understand how blocks are linked. Then explore Mining Simulator to see how security works. Progress to Merkle Trees to understand data organization. Finally, try Smart Contracts and Steganography to see advanced blockchain applications.