Spin the 2²⁵⁶ keyspace
Real cryptography. Real blockchain checks. Statistically impossible odds.
⚠ never funded · demo only · do not import
Press SPIN to generate a real Bitcoin address.
Your stats
- Spins
- 0
- Hit rate
- 0.00%
- Rarest
- common
- Common
- 0
- Uncommon
- 0
- Rare
- 0
- Legendary
- 0
Live feed
Demo- ›256bit unlocked a near-miss notification
- ›midnight_op unlocked a near-miss notification
- ›cipher_kat just spun 191 addresses
- ›256bit just spun 157 addresses
How it works
A 256-bit private key is generated in your browser using crypto.getRandomValues, then transformed into a public key via secp256k1 and hashed into a P2PKH address.
~1 in every 4 spins, the address is queried against the Blockstream public API to see if it has ever held funds. Other spins skip the API to be a polite citizen of the internet.
There are 2²⁵⁶ ≈ 10⁷⁷ possible keys — more than atoms in the observable universe. Even spinning a billion times per second for the age of the universe, you'd find nothing. That's the point.
No keys are stored or transmitted. Each generated key lives only in your browser memory for the duration of one spin and is discarded.