Didn't realize there were associated patents for ecash. The 'blind signature systems' patent has been expired since 2005.
Philip Zimmermann on why Chaumian ecash never caught on despite its solid cryptography. https://blossom.primal.net/657e05957b9e682137945cccca6f2f801bcf42ddda4fe0474fbc64a0e4da4ed9.mp4
Didn't realize there were associated patents for ecash. The 'blind signature systems' patent has been expired since 2005.
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