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 61 through 70 (Total entries: 1535)

Hash:

Ida

Signature:

Строительство загородных домов
под ключ - это процесс возведения дома с нуля до полной
готовности, включая все этапы проектирования, строительства и отделки, без участия заказчика.

кладка перегородок цена
за м2

Friday, January 31 2025 - 03:21 PM

Hash:

Thurman

Signature:

mega fo
Спасибо!

Thursday, January 30 2025 - 12:02 PM

Hash:

Stepanie

Signature:

мега зеркало
Спасибо!

Wednesday, January 29 2025 - 07:57 AM

Hash:

Russell Dalitz

Signature:

Certified Advanced Rolfer ® & Rolfing ® Ft Worth Dallas

Monday, January 27 2025 - 06:26 PM

Hash:

Douglas

Signature:

мега ссылка
Tanks

Monday, January 27 2025 - 12:38 PM

Hash:

Penelope

Signature:

ссылки mega
Tanks

Monday, January 27 2025 - 06:26 AM

Hash:

Katrin

Signature:

www.behance.net
Balkland balkan tours, blakan tour and packages, balkan packages, balkan trips, balkan tour, balkan trip and
package

Saturday, January 25 2025 - 07:03 AM

Hash:

Henry Ringler

Signature:

Prepared to embark on an journey throughout The us? Search no more, as We have now compiled a list of fifty have to-see sites that may leave you in awe. From breathtaking purely natural landscapes to bustling towns, the United states has everything. Get ready to pack your bags and strike the street as we take you on a journey as a result of 50 wonderful places inside the United states of america.

Wednesday, January 22 2025 - 11:37 PM

Hash:

Bobbi Stuckman

Signature:

Willing to embark on an adventure across The us? Glimpse no additional, as we have compiled a summary of 50 ought to-see places that may depart you in awe. From gorgeous pure landscapes to bustling cities, the United states of america has it all. Prepare to pack your baggage and strike the highway as we just take you over a journey by way of fifty remarkable spots within the United states of america.

Wednesday, January 22 2025 - 11:26 PM

Hash:

Keshia Rocker

Signature:

Able to embark on an journey across The usa? Seem no further more, as we have compiled a summary of fifty will have to-see destinations which will depart you in awe. From breathtaking natural landscapes to bustling towns, the USA has all of it. Get ready to pack your luggage and hit the road as we consider you on the journey as a result of 50 remarkable areas inside the United states.

Wednesday, January 22 2025 - 11:15 PM