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 81 through 90 (Total entries: 845)

Hash:

Twila

Signature:

Sports betting. Bonus to the first deposit up to 500 euros.

sports betting

Sunday, October 30 2022 - 05:11 PM

Hash:

Bev

Signature:

Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see how Here

Friday, October 28 2022 - 02:13 AM

Hash:

Trent

Signature:

Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see how Here

Wednesday, October 26 2022 - 06:49 AM

Hash:

Marietta

Signature:

Sustain the excellent work !! Lovin' it!
Here is my blog; webpage

Monday, October 24 2022 - 02:12 AM

Hash:

Larhonda

Signature:

Sustain the helpful work and generating the crowd!

Here is my homepage webpage

Sunday, October 23 2022 - 03:53 PM

Hash:

Jolie

Signature:

thank a lot for your site it helps a whole lot.

Also visit my site ... site

Sunday, October 23 2022 - 08:04 AM

Hash:

Alan

Signature:

Guess the exchange rate, bitcoin and get money. Start with $10 and you can earn up to $1000 in a day,
see how Here

Thursday, October 20 2022 - 02:33 AM

Hash:

Arlie

Signature:

Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see how Here

Friday, October 14 2022 - 07:28 AM

Hash:

Wiley

Signature:

Guess the exchange rate, bitcoin and get money.
Start with $10 and you can earn up to $1000 in a day, see
how Here

Sunday, October 09 2022 - 10:16 PM

Hash:

Evangeline

Signature:

Guess the exchange rate, bitcoin and get money. Start with $10 and you can earn up to $1000 in a day, see how Here

Sunday, October 09 2022 - 08:37 PM