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A comment on Store the proof of a webpage saved with SingleFile in Bitcoin. Parent comment

Re:Store the proof of a webpage saved with SingleFile in Bit... by capableweb on Monday January 06, 2020 @04:05PM (#21973312)
Yes, if I understand IPFS correctly, you can. Since IPFS works as a content addressed system, if you embed the date, send the document to the judge (the hash which is based on the content), don't show it until a later point, you can prove the document is the same as you sent, even without revealing the content until later.

IPFS doesn't seem to have anything about "version control" as onyb mentioned.

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Re:Store the proof of a webpage saved with SingleFile in Bit... by tingletech on Monday January 06, 2020 @06:26PM (#21974717)
what prevents me from pre-dating a document on IPFS?
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Re:Store the proof of a webpage saved with SingleFile in Bit... by bluesign on Monday January 06, 2020 @04:53PM (#21973805)
how you will embed the date?
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Re:Store the proof of a webpage saved with SingleFile in Bit... by jstanley on Monday January 06, 2020 @06:02PM (#21974495)
The IPFS hash is a hash of the content. Simply including the date as text would suffice.
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Re:Store the proof of a webpage saved with SingleFile in Bit... by lmm on Tuesday January 07, 2020 @01:05AM (#21977370)
What stops you from backdating a document when you write it?
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Re:Store the proof of a webpage saved with SingleFile in Bit... by jstanley on Tuesday January 07, 2020 @12:19PM (#21982029)
Nothing. Including the date doesn't do anything other than commit yourself to stating that date, the important part is the date at which you commit to the hash.
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Re:Store the proof of a webpage saved with SingleFile in Bit... by capableweb on Tuesday January 07, 2020 @01:56PM (#21983298)
I'm assuming to you add the document (with date) to IPFS without being connected to the network (no actual data gets shared, only hash), gets the hash and send it over to the person you need to prove the document's date to. They won't be able to get it (since content itself is offline) and once you want to prove it, you add it again or make it otherwise online. Then they can fetch the same hash and confirm they received the hash at the date.
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