What is Bulwark? Bulwark is a coin that exists to provide freedom to users by defending their privacy. The coin offers the ability toShow more [+] send instantaneous transactions and to send highly private transactions. Bulwark started with proof of work mining but will transition into proof of stake by December of 2018. Bulwark also features masternode technology, a useful feature that helps expedite transactions, secure the network, and promotes coin holding.