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 1 through 10 (Total entries: 470)

Hash:
Forest
Signature:
We are usually professional wholesale provider of jerseys, specialised in supplying Wholesale Jerseys and custom-made jerseys.
Jerseys together with 100% stitched traditional quality, all Numbers, Logos and Names
are sewn on and embroidered.
affordable jerseys com
Saturday, December 04 2021 - 03:35 AM
Hash:
Jenna
Signature:
We are usually professional wholesale provider of jerseys, focused in supplying Low cost Jerseys and customized jerseys.
Jerseys using 100% stitched real quality, all Quantities,
Logos and Titles are sewn about and embroidered.
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Friday, December 03 2021 - 03:27 PM
Hash:
Francine
Signature:
You have among the best online websites.
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Friday, December 03 2021 - 10:18 AM
Hash:
Chara
Signature:
Wow, gorgeous portal. Thnx ...
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Thursday, December 02 2021 - 05:23 PM
Hash:
Hubert
Signature:
Christian Zakel
St. Wolfgang Straße 14
86697 Oberhausen
Tel. 0176 34594127
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Wednesday, December 01 2021 - 12:09 AM
Hash:
Syreeta
Signature:
Hi, i think that i saw you visited my website so i came to “return the favor”.I'm trying to find things too improve my web site!I suppose its ok to use some of your ideas!!

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Tuesday, November 30 2021 - 07:18 AM
Hash:
Dexter
Signature:
say thanks to a lot for your site it helps a lot.
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Tuesday, November 30 2021 - 12:24 AM
Hash:
August
Signature:
We are usually professional wholesale provider of jerseys, specialised in supplying Inexpensive Jerseys and personalized jerseys.

Jerseys along with 100% stitched real quality, all Numbers,
Logos and Titles are sewn in and embroidered.
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Sunday, November 28 2021 - 03:49 PM
Hash:
Diego
Signature:
Keep on writing, great job!
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Friday, November 26 2021 - 10:45 AM
Hash:
Carmine
Signature:
Wow, lovely website. Thnx ...
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Tuesday, November 23 2021 - 09:12 AM
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