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: 883)

Hash:
Noble
Signature:
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Friday, May 26 2023 - 04:21 AM
Hash:
Alfonso
Signature:
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Wednesday, May 24 2023 - 02:55 PM
Hash:
Salvador
Signature:
Вы непревзойдённы ! Заворачиваете да
и на наш портал :) Ограждение балконов цены
Sunday, May 21 2023 - 09:32 PM
Hash:
Corina
Signature:
JadiDuit88 - Slot Gacor
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Sunday, May 21 2023 - 02:38 PM
Hash:
Ebony
Signature:
Я уже долго шарил сведения, какая конкретно решит мои личные проблемы.
И единственно на Вашем портале я её выискал. Жажду сказать вы достойны наилучшего творцунастоящеговебсайта. Далее, предположительно кому-то понравится и также моя интернет страница Цены на натяжной потолок кривой рог .

Жажду многим фарты!
Saturday, May 20 2023 - 06:10 AM
Hash:
Kendra
Signature:
Pretty beneficial look forwards to visiting again.
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Friday, May 19 2023 - 12:09 AM
Hash:
Florene
Signature:
Worman Law LLC
222 S Meramec Avee Suite 203
St. Louis MO 63105
(314) 695-9529
DWI Attorney St Louis MO
Thursday, May 18 2023 - 05:40 PM
Hash:
Berenice
Signature:
Law Office of Jason B. Going
1803 N Bellt W
Belleville, IL 62226
(618) 408-1290
Personal Injury Lawyer Belleville Il
Thursday, May 18 2023 - 10:24 AM
Hash:
Tosha
Signature:
Благодарствую ! Заворачиваете а также на собственный вебсайт ;) Установка окон по Кривой Рог
Wednesday, May 17 2023 - 11:14 PM
Hash:
Vida
Signature:
Nice answers in return of this difficulty with real arguments and describing everything
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Wednesday, May 17 2023 - 05:47 PM
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