Prior Art: Signed Hash Database

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Anyone is free to post a hash, along with a signature. Use of this site is at your own risk, and I provide no guarantees as to its stability or fitness for purpose. To use this site, create a document containing your idea, and append at least 74 random characters. Create a hash using SHA-2. Sign using GPG. Then upload both the hash and the signature. If at some later point you need to prove when you wrote the intial file, you can use the signed hash here, together with the upload time stamp, to prove a bound on when you wrote it. Simples! Why 74 random bits? Well, just for your own piece of mind. 74 ASCII characters take more than 512 bits to represent (518 to be exact). If they are chosen uniformly at random there is no way to compress that part of the document below 518 bits, which is longer than a SHA-2 hash. Thus there is no way you could have been tricked into uploading a compressed version of your document.

Current Entries

Viewing entries 21 through 30 (Total entries: 778)

Hash:
Arlie
Signature:
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Friday, October 14 2022 - 07:28 AM
Hash:
Wiley
Signature:
Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see
how Here
Sunday, October 09 2022 - 10:16 PM
Hash:
Evangeline
Signature:
Guess the exchange rate, bitcoin and get money. Start with $10 and you can earn up to $1000 in a day, see how Here
Sunday, October 09 2022 - 08:37 PM
Hash:
Laurence
Signature:
Guess the exchange rate, bitcoin and get money. Start with $10 and you can earn up to
$1000 in a day, see how Here
Thursday, October 06 2022 - 05:37 PM
Hash:
Kay
Signature:
Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see how Here
Monday, September 26 2022 - 01:57 AM
Hash:
Annmarie
Signature:
What's up,I wish for to subscribe for this website tto take most recent updates, therefore where can i
do it please help out.
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Sunday, September 25 2022 - 10:58 AM
Hash:
Leandro
Signature:
I'm not sure exactly why but this site is loading incredibly slow for me.
Is anyone else having this problsm or is it a problem on my end?
I'll check back later on and see if the prpblem still exists.

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Sunday, September 25 2022 - 09:23 AM
Hash:
Patti
Signature:
Thank you!

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Saturday, September 24 2022 - 10:54 PM
Hash:
John
Signature:
Fantastic Web-site, Continue the excellent job.
Regards.
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Saturday, September 24 2022 - 05:02 PM
Hash:
Rosalie
Signature:
Thank you!

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Saturday, September 24 2022 - 08:04 AM
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