Token sales using an immutable ledger that guarantees open access to third parties to trade digital assets, and a payment system that is open, censorship resistant and global, have advantages over the prior art. These two features combined reduce financial friction and provide a stable platform for the development of financial technology (e.g. decentralized exchanges like EtherDelta and OasisDEX, and token wallets like MyEtherWallet and Jibrel).