Blockchain is simply a failed technology. If it's done as proof-of-work, it must have a high interest rate(paid exogenously) to secure the chain. Nobody will ever agree on proof-of-stake. Anyone just issuing tokens or currency would just use a much more efficient database.
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The exogenous cost is the electricity that miners must use. Proof-of-stake problems are detailed below. Database replication is very well understood. The most "legitimate" use of blockchain is cryptocurrencies, which serve grey markets and capital flight.https://beincrypto.com/new-vulnerabilities-show-proof-of-stakes-flaws/ …
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