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 351 through 360 (Total entries: 1730)

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Nigel

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Friday, October 18 2024 - 12:59 PM

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Therese

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Friday, October 18 2024 - 08:27 AM

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Emil Bretz

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On this comprehensive information, we are going to visit deep-rooted history of segregation in America, a topic that remains essential for educators, college students, historians, and anybody all in favour of social justice and equality. By understanding the historic context of segregation, we will higher address its lingering effects and make it possible a more inclusive future. People's information delve into key occasions, influential figures, considering the socio-political dynamics that shaped a divided nation.

Thursday, October 17 2024 - 11:28 AM

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Houston

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Thursday, October 17 2024 - 08:03 AM

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Pete

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Thursday, October 17 2024 - 01:03 AM

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Maximo

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Wednesday, October 16 2024 - 11:20 AM

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Kisha

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Wednesday, October 16 2024 - 09:42 AM

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Jannet Najar

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The Civil Rights Movement stays one of the most vital durations in American historical past, representing a pivotal look for justice and equality. This information explores its origins, main milestones, and lasting troubles society. It handles educators with tools to effectively teach this significant matter, emphasizing the advantage of actual-life tales and first sources.
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The Civil Rights Motion began in the mid-1920s, rooted in the systemic racial injustices faced by African Americans. The motion sought to dismantle segregation and discrimination, drawing from earlier efforts by abolitionists and activists. Key events, really enjoy 1955 Montgomery Bus Boycott, catalyzed nationwide activism and brought affection the cause.

Tuesday, October 15 2024 - 06:16 PM

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Georgina

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Tuesday, October 15 2024 - 06:05 AM

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Leticia

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Monday, October 14 2024 - 02:15 PM