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It sounds like any centralized database to track ownership of shares would solve this though, and then you wouldn’t require third party proof of work or run the

• will_brown 8y ago
  Most all public traded shares exist in the form of digital shares in a database/databases. I agree that Blockchain is more often in search of a problem. But in the case of publicly traded shares, where the current system is broken (like the Dole case and others have shown double spend is real in Billion dollar publicly traded companies) and there are multiple expensive middlemen, p2p/immutable shares sound like a winner.