Bitcoin Rembrandt

Bitcoin Rembrandt based in Amsterdam

Bitcoin tutorials

Tutorials for those in need 21.CO

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Learn to create your first wallet

You can bring a Bitcoin wallet in your everyday life with your mobile or you can have a wallet only for online payments on your computer. In any case, choosing your wallet can be done in a minute.

Your first wallet

We are here to help you start understanding Bitcoin

Using Bitcoin to pay and get paid is easy and accessible to everyone.

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Bitcoin: A Peer-to-Peer Electronic Cash System

Commerce on the Internet has come to rely almost exclusively on financial institutions serving as trusted third parties to process electronic payments. While the system works well enough for most transactions, it still suffers from the inherent weaknesses of the trust based model.