1 Troy oz Silver Bitcoin .999 Fine Bullion Round. Your favorite cryptocurrency in a physical form. Around the top "Decentralized Consensus" means that by voting, users come to an agreement as to what information is accepted. With blockchain, the users find, share and verify the "blocks" which is what makes cryptocurrency a decentralized currency. In 2009 Bitcoin became the first decentralized cryptocurrency. Along the bottom is the Latin phrase "vires in numeris" meaning “Strength in numbers”