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: 778)

Hash:
Zita
Signature:
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Thursday, November 24 2022 - 10:56 AM
Hash:
Iona
Signature:
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Saturday, November 19 2022 - 10:36 PM
Hash:
Ray
Signature:
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Saturday, November 19 2022 - 09:40 PM
Hash:
Alphonso
Signature:
Maintain the helpful work and generating the crowd!
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Sunday, November 13 2022 - 09:23 PM
Hash:
Kian
Signature:
Regards for sharing this amazing web-site.


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Saturday, November 12 2022 - 02:53 PM
Hash:
Marissa
Signature:
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Friday, November 11 2022 - 03:26 AM
Hash:
Laurence
Signature:
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Thursday, November 10 2022 - 11:04 PM
Hash:
Antonietta
Signature:
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Tuesday, November 08 2022 - 01:05 AM
Hash:
Phoebe
Signature:
Выявляем Ортопедический матрас.
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Обеспечить необходимые условия восстановления призваны ортопедические матрасы. Что за моменты выбора покупатели должны обратить внимание, изучайте в топике: :D Матрасы ортопедические в кривом роге цена
Friday, November 04 2022 - 09:43 AM
Hash:
Emanuel
Signature:
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Friday, November 04 2022 - 01:04 AM
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