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 91 through 100 (Total entries: 470)

What a stuff off un-ambiguity and preserveness of precious know-how regarding unexpected emotions.

French bbulldog puppies for sale web page blue french bulldog for sale
Friday, October 08 2021 - 02:30 AM
Love the site-- very user pleasant and whole lots to see!

betting tips champions league (Angeles)
Thursday, October 07 2021 - 01:40 PM
Many thanks very practical. Will share site with my good friends.

kody promocyjne bukmacherów
Wednesday, October 06 2021 - 07:29 AM
Pretty! Thiis was an extremely wonderful article.
Thanks for providing this info.
Ethereum newes web site bitcoin
Wednesday, October 06 2021 - 06:36 AM
You're an extremely practical website; could not make it without ya!

And the 448-square-mile Thunder Bay National Marine Sanctuary within the American facet of Huron is house to over 70 wrecks, earning it the nickname Shipwreck Alley. This is the key to having fun and profitable the cash. Well, as shocking as it may be for you to seek out this out, it's completely attainable to find a supplier of both of these things, and never over too prolonged an amount of time as well.

My page: webpage
Tuesday, October 05 2021 - 01:51 PM
I enjoy the info on your web sites. Thank you so much.

sites for betting tips
Monday, October 04 2021 - 04:59 PM
Many thanks very helpful. Will share website with my buddies.

For layouts that do not, the dealer usually divides your chips into five equal quantities and places them in the 2, 3, 11, 12, and Any Seven bins. The groups or clans looking to play the hosted games get to lease the sport server from the providers. Only due to the very fact that you will not must manually observe all this information in your gamers, your corporation has an edge over the rivals.

Also visit my blog post; web site
Monday, October 04 2021 - 11:56 AM
I treasure the knowledge on your web sites. Thnx.

0.20 and a maximum wager value $100. The emails and other responses they ship to persons are pc-generated and often exactly the identical from person to person, phrase for word. They're principally using a tested money switch methods to back up this guarantee.
my webpage ... website
Monday, October 04 2021 - 06:28 AM
Thanks very useful. Will share site with my friends.

Also visit my page; homepage
Sunday, October 03 2021 - 11:39 PM
Great Web site, Preserve the great job. Thank you so much.

Look into my site ... homepage
Sunday, October 03 2021 - 11:04 PM
Powered by DRBGuestbook · PHP Web Hosting and Free PHP Scripts