Thank you very much for the additional infos and links, i will read them
all.
Oh, I forgot to mention that timestamping using blockchains is actually
very easy, for example I timestamped my key's fingerprint:
https://keyserver.ubuntu.com/pks/lookup?fingerprint=on&search=0x653909A2F0E37C106F5FAF546C8857E0D8E8F074&op=vindex
(look for [email protected]
afcb092c5ca6409526d18ae9cf22d3b55d37e723eb1b74e3f84f7e6b052a162a)
And you can check out the transaction here:
https://blockexplorer.com/api/tx/afcb092c5ca6409526d18ae9cf22d3b55d37e723eb1b74e3f84f7e6b052a162a
(look for "OP_RETURN 653909a2f0e37c106f5faf546c8857e0d8e8f074" that is
my key's fingerprint).
If you convert "time": 1507539820 seconds from there to date you'll get
something like 2017-10-09T09:03:40.000Z.
OpenTimestamps (I think) uses Merkle trees to minimize fees but the
downside is that the hash is not directly embedded in the blockchain and
you need the extra files to reconstruct the tree root.
Have a nice day!
Kind regards,
Wiktor
--
https://metacode.biz/@wiktor
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