Timestamping signed documents or detached signature files
stefan.claas at posteo.de
Mon Jul 23 00:17:10 CEST 2018
On Sun, 22 Jul 2018 21:57:13 +0200, Wiktor Kwapisiewicz wrote:
> > 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:
> (look for timestamp+bitcoin-transaction at metacode.biz
> And you can check out the transaction here:
> (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.
Thanks! I also checked the transaction via blockchain.com.
> 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.
Yes, and the service is free. In the past i played also with OP_RETURN,
via WWW based services and my Electrum Wallet.
> Have a nice day!
Thanks, have a nice day too! Here it is already very late and i go to
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