Prior Art: Signed Hash Database

Upload a signed hash



Challenge Image

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 41 through 50 (Total entries: 342)

Hash:
Jann
Signature:
BettingLex Professional Tipsters and reliable bettkng tips.


Tipster academy, deep knowledge sharing
betting tips of the day
Tuesday, August 17 2021 - 10:48 AM
Hash:
Shaunte
Signature:
BettingLex Professional Tipsters and relable betting tips.

Tipster academy, deep knowledge sharing
Bettinglex uk site
Tuesday, August 17 2021 - 10:47 AM
Hash:
Irwin
Signature:
ABC Chile
Iquique, Chile
mecanica de suelos|que es un ewtudio de mecanica de suelos|cuanto tarda un estudio
de mecanixa dee suelos|cuanto cuesta un estudio de
mecxanica de suelos|mecanica de suelos ingenieria civil|mecanica de suelos libros pdf|estudio de mecsnica de suelos|mecanica de suelos pdf|mecanica de
suelos braja das|mecanica de suelos chile|problemas resuelfos de mecanica
de suelos y cimentaciones crespo villalaz pdf|estudios de mecanica de suelos pdf|ingenieria geotecnica pdf|geotecnia|que ess laa
geotecnia|geotecnica|geotecnia ingenieria civil|ingenieria geotecnica|geotecnicos|geotecnia definicion|ingenieria de suelos|historia de la geotecnia|que
ess geotecnia|ingeniería geotécnica|que estudia la geotecnia|geotécnico|geotecnia ambiental|geotecnia forense|pruebas de mecanica de suelos|propiedades
mecanicas del suelo|historia de la mecanica de sueos moderna|instrumentacion geotecnica|estudios geotecnicos
Wednesday, August 11 2021 - 05:12 PM
Hash:
Wayne
Signature:
ABC Chile
Iquique, Chile
abc-instrumentacion geotecnica
Wednesday, August 11 2021 - 05:12 PM
Hash:
Elisabeth
Signature:
Бизнесмен и меценат Максим Евгеньевич Каганский родился в
Москве 19 ноября 1980 года в многодетной семье сотрудника МВД.
В 1998 году поступил в Московский Юридический Институт МВД России (сейчас – Академия МВД России), специальность – юрист-правовед.

максим каганский сегодня
максим каганский сегодня
Wednesday, August 11 2021 - 11:09 AM
Hash:
Mattie
Signature:
Just simply want to express Now i'm thankful that i stumbled upon your website page!

My blog post; web page
Tuesday, August 10 2021 - 05:06 AM
Hash:
Isla
Signature:
Wow because this is excellent work! Congrats and keep it up.

Also visit my web blog - site
Sunday, August 01 2021 - 06:33 AM
Hash:
Clair
Signature:
Wow, beautiful website. Thnx ...
In the occasion that you simply win, keep on with the quantity you initially wager on. The French actress is asking London’s High Court to rule she is entitled to the money and that the movie firm, which is but to file its response to the claim, pay her authorized prices.

On the preliminary levels of being profitable with the longer procedures, you might have to fully concentrate upon the types of game choice that attract players with varied perspectives.
my web-site - website
Sunday, August 01 2021 - 05:10 AM
Hash:
Chase
Signature:
This is a topic which is close tto mmy heart... Many thanks!
Exactly wheee are your contact details though?
Sòng bạc trực tuyến bằng tiền thật homepage đánh bạc miễn phí và không cần đăng ký
Friday, July 30 2021 - 01:49 AM
Hash:
Felisha
Signature:
Thanks pertaining to delivering these types of awesome info.



Also visit my site ... webpage
Monday, July 26 2021 - 06:11 PM
Powered by DRBGuestbook · PHP Web Hosting and Free PHP Scripts