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 91 through 100 (Total entries: 149)

Hash:
Vania
Signature:
Wow cuz this is really great job! Congrats and keep it up.

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Sunday, October 06 2019 - 12:44 PM
Hash:
Margarito
Signature:
Wow cuz this is excellent job! Congrats and keep it up.

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Sunday, October 06 2019 - 06:19 AM
Hash:
Azucena
Signature:
Keep up the awesome work !! Lovin' it!
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Saturday, October 05 2019 - 10:59 PM
Hash:
Deon
Signature:
How goes it, well put together web-site you've got here.

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Friday, October 04 2019 - 11:37 PM
Hash:
Melisa
Signature:
I enjoy the knowledge on your site. Kudos!
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Friday, October 04 2019 - 10:40 PM
Hash:
Adrienne
Signature:
Lovely Web page, Continue the excellent job. Thanks a ton.
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Friday, October 04 2019 - 10:27 PM
Hash:
Kandis
Signature:
Maintain the spectacular work !! Lovin' it!
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Friday, October 04 2019 - 06:17 AM
Hash:
Lucie
Signature:
I benefit from reading your websites. With thanks!
2600 zł brutto kalkulator brutto-netto 3300 zł brutto 2200 zł brutto kalkulator wynagrodzeń
Friday, October 04 2019 - 04:12 AM
Hash:
Sandy
Signature:
Love the website-- extremely user pleasant and great deals to see!

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Friday, October 04 2019 - 02:04 AM
Hash:
Lucile
Signature:
Maintain the remarkable job !! Lovin' it!
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Thursday, October 03 2019 - 11:31 PM
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