Blockchain Core
Explore blockchain fundamentals — block building, mining, consensus, forks, and chain security.
Blockchain Visualizer
Learn blockchain fundamentals through interactive demonstrations of hashing, mining, and distributed consensus
Longest Chain Visualizer
Build competing chains and discover how nodes pick the canonical chain through cumulative proof of work, not block count.
51% Attack Simulator
Understand how 51% attacks work through interactive walkthroughs, hash power simulations, and attack economics calculators.
Chain Reorganization Demo
Visualize how blockchain forks form, compete, and resolve. Explore preset scenarios, simulate 51% attacks, and learn about consensus security.
Proof of Work Visualizer
Understand Proof of Work consensus — miners compete to find valid hashes, adjust difficulty, and earn block rewards. Visualize energy expenditure and security guarantees.
Proof of Stake Visualizer
Explore Proof of Stake consensus — validators stake tokens, get selected to propose blocks, and face slashing for misbehavior. Compare PoS economics with PoW.
Rollup Explainer
Learn how rollups scale Ethereum — batch transactions off-chain, post compressed data on-chain, and inherit L1 security. Explore sequencers, fraud proofs, and validity proofs.
Optimistic vs ZK Rollup
Compare Optimistic and ZK rollups side-by-side — fraud proofs vs validity proofs, finality times, gas costs, EVM compatibility, and real-world tradeoffs.
Validity Proof Demo
Learn zero-knowledge proofs through 4 interactive scenarios — colored balls, Sudoku, ZK rollup batch, and hash preimage. Step through the 5-phase ZK pipeline with interactive diagrams.
Node Network Visualizer
Watch blockchain messages ripple across a 12-node global map. Visualize transaction gossip, block propagation, network partitions, and peer discovery with wave-by-wave animations.
Block Propagation Demo
Watch blocks race across 10 global nodes with millisecond-precision waterfall timing. See forks form and resolve, compare compact vs full relay speed, and watch orphan races in action.
Transaction Pool Visualizer
Explore the Ethereum mempool with gas-sorted transactions, MEV sandwich demos, EIP-1559 fee mechanics, and stuck transaction diagnosis. Build blocks as a validator and watch the fee auction play out.
Peer Discovery Demo
Watch a blockchain node bootstrap from zero peers to a full routing table. Step through bootstrap nodes, DNS seeds, Kademlia DHT walks, and RLPx connections — with live XOR distance calculations.
RPC Request Visualizer
Trace Ethereum JSON-RPC calls layer by layer: dApp → provider → node → trie/EVM → back. Syntax-highlighted request/response JSON, timing estimates, and hex decoding for eth_getBalance, eth_call, sendRawTransaction, and more.
Chain ID Registry
Browse, search & copy chain IDs for every major EVM-compatible network — 54 chains across L1, L2, L3, mainnets, and testnets. Click any card to copy.
Cross-chain Message Demo
Interactive visualiser for EVM bridge protocols. Watch LayerZero, Wormhole, Axelar, OP Stack, and IBC messages travel cross-chain step by step with Solidity code.
Block Explorer Comparison
Compare how Etherscan, Blockscout, OKLink, Blockchair and Snowtrace display the same on-chain data — transactions, blocks, addresses, and tokens side by side.
Bitcoin Mining Simulator
Experience real cryptocurrency mining hands-on — mine blocks with SHA-256 hashing, adjust difficulty, watch halvings, and understand proof-of-work economics
Block Time Simulator
Simulate Bitcoin's difficulty adjustment mechanism — control hash rate, trigger real-world events, and watch the network self-correct to maintain ~10-minute block times
Difficulty Visualizer
Interactive mining difficulty explorer — see why each leading zero makes mining 16× harder with real SHA-256 computation and hash space visualization
Nonce Finder Race
Race against AI bots to find valid SHA-256 hashes — a competitive nonce-finding game that teaches proof-of-work mining through head-to-head competition