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CIYAM (OP)
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October 28, 2018, 12:40:05 PM
 #1
Firstly: https://proofofexistence.com/detail/59842392aaeb2503acc35951cbb1f6cf7629bcc62ba0a0bed02928fc99e85d7a
(to note when I created the document)
and then this: https://ciyam.org/qc_proofing.txt

It could probably be improved but is just a starting point to make sure that we will be able to make Bitcoin QC proof well ahead of any real threat of people losing funds (which I have no idea how far away is).
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October 28, 2018, 03:57:14 PM
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I think using hash commitments and reveal-schemes instead of digital signatures has been discussed in the past.  For instance, http://www.jbonneau.com/doc/BM14-SPW-fawkescoin.pdf describes an entire cryptocurrency that is based on this idea.  I don't know how practical it would be to use such a scheme to make Bitcoin QC resistant, as opposed to things like Lamport signatures, though.
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