Bitcoin uses “proof of work” to authenticate transactions, and Ethereum is considering moving to “proof of stake.”

Being a crypto-guru, I hereby present two more ways to synergize with your blockchain in the cloud:
– proof of Works: all transactions are set in 12pt Arial using Microsoft Works. Preferably also WordArt somehow
– proof of steak: it’s like vegans but with t-bone steaks, so your transactions insist on telling you how it eats t-bones and you should too