Prior Art: Signed Hash Database

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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 51 through 60 (Total entries: 405)

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Saturday, September 25 2021 - 10:23 PM
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Saturday, September 25 2021 - 05:23 AM
I don'teven know how I enmded uup here, but I thought this post was good.
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Saturday, September 25 2021 - 03:34 AM
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Saturday, September 25 2021 - 12:50 AM
I absolutely love your site.. Very nice colors & theme.
Did yoou create this site yourself? Please reply
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Friday, September 24 2021 - 10:34 PM
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Friday, September 24 2021 - 01:04 PM
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Thursday, September 23 2021 - 05:43 AM
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Thursday, September 23 2021 - 12:39 AM
Hi, i read your blog occasionally and i own a similar one and i was jusst wondering if you get a lot of spam remarks?
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Igett so much lately it's driving me crazy so any support is very much appreciated.

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Wednesday, September 22 2021 - 05:13 PM
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Wednesday, September 22 2021 - 02:42 AM
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