> Blockchains are slow, expensive databases masquerading as a social revolution while functionally being a get-rich-quick scheme. If you consider a blockchain

> Blockchains are slow, expensive databases masquerading as a social revolution while functionally being a get-rich-quick scheme. If you consider a blockchain to be (mostly) a "competitor" to a database, you use it wrong. Blockchains and in particular consensus algorithms for blockchains are a solution to a hard problem: reaching a consensus when not all participants can be trusted. For any application that needs this problem solved, blockchain algorithms are to my best knowledge basically the only game in town. These applications are rare, but they do exist - for these blockchain and blockchain consensus algorithms are a godsend. If you have another problem to solve, a blockchain will insanely likely not be the proper solution.