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 61 through 70 (Total entries: 1237)

Hash:
Terrell Satterley
Signature:
Pavel Studio online services and fast api.sss ssssssd
Wednesday, February 21 2024 - 12:12 PM
Hash:
Bobby Ryan
Signature:
I've got some leads that are interested in your company, who/where can I send them?
Sunday, February 18 2024 - 06:08 PM
Hash:
Kelli
Signature:
Focused Plumbing
519 W Lake Dr
Edwardsville IL 62025
(618) 418-3102
Plumber Near Me
Friday, February 16 2024 - 08:00 AM
Hash:
Keith Mendes
Signature:
Boost efficiency & leap ahead of the competition with our easy-to-integrate AI tools.
Let's unlock your business's potential together.
If this interests you, respond to this email with a YES.

Best,
Keith
Wednesday, February 14 2024 - 12:50 PM
Hash:
Kelli Flynn
Thursday, February 08 2024 - 10:44 AM
Hash:
Georgetta
Signature:
Спасибо ! Заворачивайте да и на
наш портал ;) Цена французский балкон
Wednesday, February 07 2024 - 07:09 PM
Hash:
Bogner
Signature:
Want more leads at a reduced cost that close at a higher rate than any other advertising platform out there?

We Are Looking For 7 Businesses To Test Our Proven AI Lead Generation Machine And Add A Minimum Of 40% More To Their Bottom Line In 2024!

We've Increased Deal Flow, Reduced Cost, and Blown Up Profit In Almost Every Industry On The Planet...

So, if you want to use AI to grow your business, comment YES and we will get back to you ASAP
Wednesday, February 07 2024 - 12:53 PM
Hash:
Scott
Signature:
Why Accident Attorney Lawyer Is More Dangerous Than You Realized accident attorney lawyer
Wednesday, February 07 2024 - 06:44 AM
Hash:
Mollie
Signature:
Выбираем Ортопедические матрасы.
Время сна – незаменимое, при котором тело эффективно восстанавливается, а лучшим методом его полного релаксирования выступает положение лежа. При этом важно, чтобы спина, ноги или шея не находились в режиме нагрузки мышечной ткани или принимали нагрузки вследствие неудобной расположенности либо неравномерности давления на отдельные участки тела со стороны поверхности опоры.
Обеспечить благоприятные моменты восстановления призваны ортопедические матрасы. Что за критерии подбора покупатели должны учитывать, знакомьтесь на странице: ;) Матрасы ортопедические в кривом роге цена
Monday, February 05 2024 - 06:32 PM
Hash:
Clement
Signature:
It is the best time to make some plans for the future and it's time
to be happy. I have read this post and if I could I want to suggest you few interesting things or tips.
Maybe you can write next articles referring to
this article. I want to read even more things about it!

sex
Saturday, February 03 2024 - 07:14 PM
Powered by DRBGuestbook · PHP Web Hosting and Free PHP Scripts