What Is Blockchain, Anyway?A Brief History of AccountingSingle-Entry BookkeepingDouble-Entry BookkeepingMassive Fraud, or the Status Quo Officially Doesn’t Work Any LongerTriple-Entry BookkeepingTriple-Entry AccountingThe Bitcoin Revolution: The First Blockchain Use CaseEthereum and the Smart Contract RevelationSmart ContractsEthereum’s Innovation: Self-Executing Programming → Smart ContractsTenets of Blockchain (According to Me)OpenSharedDistributedConsensusPermanence (or Immutability)AnonymityTrustlessWhat Does Any of This Have to Do with Finance?What Is Finance?How Money Flows in Banks and EconomiesBanks Are Using Your Cash—and Not Paying for ItWhat Is Decentralized Finance, and Why Is It Important?Conclusion