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: 845)

Hash:
Francisco
Signature:
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Thursday, December 29 2022 - 06:06 PM
Hash:
Marti
Signature:
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You certainly put a brand new spin on a subject which has been written about foor a long time.
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Monday, December 26 2022 - 10:11 PM
Hash:
Christina Henderson
Signature:
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Monday, December 26 2022 - 09:00 PM
Hash:
Taylor
Signature:
Great internet site! It looks very good! Sustain the helpful work!


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Sunday, December 18 2022 - 02:33 PM
Hash:
Stepanie
Signature:
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Sunday, December 18 2022 - 04:18 AM
Hash:
Loretta
Signature:
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Saturday, December 17 2022 - 04:52 AM
Hash:
Tiffany
Signature:
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Friday, December 16 2022 - 02:02 PM
Hash:
Stanley
Signature:
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Thursday, December 15 2022 - 07:53 AM
Hash:
Kristin
Signature:
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Wednesday, December 07 2022 - 03:48 AM
Hash:
Emely
Signature:
Железная дверь Премиум - это тёплая, модная и надёжная конструкция двери.

Лудка, шириной 130 мм. произведена из рельефного металлического листа и снабжена базальтовой ватой.
Применяемая ширина делает целесообразным ставить её в многочисленные многоэтажные дома, занимая практично ширину стены.
Выгодно то, что, делать ремонт откосов в таких постройках не будет потребности.
Дверное полотнище сконструировано из высокопрочного проката массивностью один с половиной мм. с элементами усиления. В сопряжении с энергосберегающим материалом из менералловаты и 2-мя теплыми накладками 16 мм её глубина набирает 85 миллиметров.
Такие параметры отвечают эффективному классу шумопоглащения и теплосбережения.
В стандартную наборку также установлены три завеса, турецких запорных устройства Kale (сувальдный и цилиндричечкий), 2 антисрезов, смотровое устройство и порог из нержавеющей стали.


Цена данной двери была 7560 грн.  в середине 2019 г.
Узнать ещё про эту дверь доступно в обзоре Двери входные двухстворчатые
Wednesday, December 07 2022 - 01:59 AM
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