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 31 through 40 (Total entries: 1535)

Hash:
Waylon
Signature:
[INSERT CITATION NAP HERE] Ten Undeniable Info About Same Day
Delivery Courier Service Www.rusticfurnitureboston.com/scraper-test/Tag/the-ontime-group]
Good day! I could have sworn I've been to this site before but after reading through some of the post I
realized it's new to me. Anyhow, I'm definitely glad
I found it and I'll be book-marking and checking back often!
Thursday, March 20 2025 - 12:20 PM
Hash:
Leroy
Signature:
Luxury1288
Monday, March 17 2025 - 08:27 PM
Hash:
Pilar
Signature:
Желаете надежную торговую площадку, чтобы приобрести
различные товары? Рекомендую обратить внимание на официальный сайт Kraken и перейти в магазин через тор: kraken даркнет с дополнительными зеркалами и ссылкой Kraken onion KRAKEN .
Здесь каждый клиент сможет найти подходящий товар
или категорию. Площадка полностью скрыта,
обеспечивает безопасность. Покупки можно
осуществлять, не беспокоясь о
потере денег или данных. Kraken onion - не только
магазин, а уникальный маркетплейс.

Здесь kraken13 +at предлагают товары
тысячи поставщиков, всегда
можно обнаружить что-то максимально
выгодное. Рекомендую пройти быструю
регистрацию на платформе Кракен onion и перейти в магазин, где
легко найдете нужные товары. При проблемах, администрация всегда готова предоставить ассистенцию.


кракен маркет даркнет скачать
Friday, March 14 2025 - 11:24 PM
Hash:
Debra
Signature:
Franchising Path Escondido
Escondido, ϹA 92025, United States
+18582803820
buy a franchiise mcdonalds [Wakelet.com]
Sunday, March 09 2025 - 07:58 AM
Hash:
Carla
Signature:
RP888
Saturday, March 08 2025 - 01:40 AM
Hash:
Dane
Signature:
دائماً ألعب في 1xbet مصر – سهل ورائع!
أنصح به الآن! 1xBet التطبيقات
Thursday, March 06 2025 - 07:03 PM
Hash:
Mellisa
Signature:
Luxury1288
Thursday, March 06 2025 - 06:40 PM
Hash:
Janet
Signature:
[INSERT CITATION NAP HERE] A Information To Brows Microblading At Any Age [insert secondaru anchor text spintax]]
I'm pretty pleased to discover this page. I wanted to thank you for ones time for this
particularly fantastic read!! I definitely liked
every part of it and I have you book-marked to check out new stuff
in your site.
Monday, March 03 2025 - 09:35 PM
Hash:
Antje
Signature:
Luxury1288
Saturday, March 01 2025 - 06:38 PM
Hash:
Abraham
Signature:
Luxury1288
Saturday, March 01 2025 - 09:10 AM
Powered by DRBGuestbook · PHP Web Hosting and Free PHP Scripts
1 2 3 4 5 6 7 8 9 10