Prior Art: Signed Hash Database

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 11 through 20 (Total entries: 233)

Hash:

jed

Signature:

zapodamy.pl

Saturday, November 28 2020 - 10:21 PM

Hash:

phillis

Signature:

zapodamy.pl

Saturday, November 28 2020 - 10:21 PM

Hash:

retha

Signature:

Muszę przyznać, że jestem zaskoczony podejściem kilku osób. Doceniam pomysły, chyba pokuszę się nawet osobiście o realizację kilku z nich.

zapodamy.pl

Saturday, November 28 2020 - 10:21 PM

Hash:

kurt

Signature:

zapodamy.pl

Saturday, November 28 2020 - 10:20 PM

Hash:

bart

Signature:

zapodamy.pl

Saturday, November 28 2020 - 03:03 PM

Hash:

Leia

Signature:

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Saturday, November 28 2020 - 05:06 AM

Hash:

Doyle

Signature:

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Your content is excellent but with pics andd video clips, this site could definitely
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blog!
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Thursday, November 26 2020 - 11:33 PM

Hash:

Anton

Signature:

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Saturday, November 21 2020 - 04:06 AM

Hash:

Kaylene

Signature:

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Wednesday, November 18 2020 - 08:09 PM

Hash:

Melva

Signature:

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Tuesday, November 17 2020 - 04:54 PM