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: 172)

Hash:
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Signature:
I am following.

Saturday, September 12 2020 - 06:32 AM
Hash:
Torri
Signature:
Keep on working, great job!
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Tuesday, September 01 2020 - 07:00 PM
Hash:
Randolph
Signature:
Heya just wanted to give you a quick heads
up and let you know a few of the images aren't loading correctly.

I'm not sure why but I think its a linking issue. I've tried it in two different internet browsers and both show the same outcome.

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Tuesday, September 01 2020 - 06:46 PM
Hash:
สล็อต ฟรี เครดิต ไม่ ต้อง ฝาก ล่าสุด
Signature:
it really is a picture of a thousand words if you have memories to tell people with it

Tuesday, August 25 2020 - 03:15 PM
Hash:
สล็อต ฟรี เครดิต ไม่ ต้อง ฝาก ล่าสุด
Signature:
diabetes is serious disease that should not taken lightly!

Saturday, August 22 2020 - 12:35 PM
Hash:
สล็อตออนไลน์ฟรีเครดิต ไม่ต้องฝาก
Signature:


Saturday, August 22 2020 - 12:35 PM
Hash:
สล็อต ฟรี เครดิต ไม่ ต้อง ฝาก ล่าสุด
Signature:


Tuesday, August 18 2020 - 09:04 AM
Hash:
สล็อตออนไลน์ฟรีเครดิต ไม่ต้องฝาก
Signature:
plug and play people! Don’t forget to read the manual before complaining!

Tuesday, August 18 2020 - 06:19 AM
Hash:
Boyd
Signature:
I was more than hhappy to find this web site.

I wanted to thank you for ones time for this fantastic read!!
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Tuesday, August 04 2020 - 11:47 PM
Hash:
Bernadine
Signature:
Sustain the helpful job and generating the crowd!
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Sunday, July 26 2020 - 09:19 PM
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