learn by doing
Tools
Interactive tools that show what Bitcoin actually does under the hood. No simulation, no hand-waving — real cryptography, run locally in your browser.
cryptography
Key Generation
Watch 256 bits of entropy become a private key, public key, and bech32 address. Real secp256k1, all in your browser.
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SHA-256 & Signatures
Hash arbitrary text or files. Sign and verify messages with a Bitcoin key. The crypto Bitcoin runs on, exposed.
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Script Playground
Step through Bitcoin Script execution with a visible stack. Templates for P2PKH, multisig, hashlocks, and timelocks — and a symbolic interpreter that explains every step.
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mining
network
UTXO Visualizer
Paste a txid — or pick a famous one — and walk the chain forward and backward by clicking inputs and outputs. Live data from mempool.space.
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Fee Market
Live mempool depth, fee histogram, and a "what fee gets in next block" estimator. Watch the queue clear as new blocks confirm.
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wallets
economics
DCA Simulator
Pick a start date, amount, and frequency. See what dollar-cost averaging into BTC, S&P 500, or gold would have produced.
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Inflation Calculator
Pick a year, pick a basket, see what a dollar saved actually bought — and what it would have bought against gold, homes, the S&P, or Bitcoin held instead.
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Stock-to-Flow
Compute Bitcoin's stock-to-flow ratio for any date and compare it against gold, silver, and the US dollar — with the model's critics steel-manned inline.
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