Bitcoin Research Tool
A cross-platform research tool for the 2015 Bitcoin puzzle transactions — the
160 addresses funded by an anonymous donor with keys hidden in ranges of
known size. The most complete, most honest puzzle-hunting toolkit — built with
Flutter and available now on Android and iOS, with macOS, Windows and Linux sharing the same codebase.
Everything in one app
- Live Board — all 160 puzzles with full on-chain data: balances,
transactions, exposed public keys, solved status - Solved archive — the 83 cracked puzzles in forensic detail:
private keys, WIFs (compressed & uncompressed), public keys, addresses and their
on-chain signatures, one tap to copy any of it - Pollard-kangaroo engine — a genuine square-root discrete-log
search on public-key-exposed puzzles, over a sub-range you define, with real measured
speed — not blind random guessing - Template mode — test structured key candidates with your own
patterns - Offline converter — HEX ↔ WIF ↔ public key ↔ address,
fully on-device - Interactive statistics — key-position clustering of the
documented solves and solved-WIF character DNA, measured vs theory - Vault — your found keys, kept locally, with a step-by-step
safe-sweep guide - Honest odds — real speeds and real probabilities, always
Why it stands apart
Real mathematics, not a slot machine.
Other puzzle apps only generate random keys and hope. Bitcoin Puzzle Tool implements
the actual attack the community uses on exposed public keys — Pollard’s kangaroo —
and hands you the steering wheel: your range, your speed, your data.
Other puzzle apps only generate random keys and hope. Bitcoin Puzzle Tool implements
the actual attack the community uses on exposed public keys — Pollard’s kangaroo —
and hands you the steering wheel: your range, your speed, your data.
A research archive, not just a game.
Every solved puzzle is documented with its full cryptographic evidence, so you study
how the hunt was really won — and verify everything yourself, on-chain.
Every solved puzzle is documented with its full cryptographic evidence, so you study
how the hunt was really won — and verify everything yourself, on-chain.
Private by design.
No ads, no tracking, no analytics. The free tier works without an account. Premium is a single one-time purchase — no subscription, ever — and it is tied to your account, so it follows you to every device. Your keys never leave your device.
No ads, no tracking, no analytics. The free tier works without an account. Premium is a single one-time purchase — no subscription, ever — and it is tied to your account, so it follows you to every device. Your keys never leave your device.