We create fun and useful Bitcoin apps.
Convert Bitcoin to one of 50 fiat currencies in an app that can also be installed as a PWA.
Take a photo with the QR image which is generated to prove that you were alive at the current block height.
Experience the mining process yourself by creating a tiny time chain based on Proof-of-Work with a difficulty adjusment.
Sign messages with your own private key, or verify the messages of others. All using Bitcoin's secp256k1 elliptic curve.
A simple calculator to convert fiat to bitcoin and sats and vice versa. Multiply fiat currencies are supported.