Что такое «Блокчейн»?
99% людей слышали это слово вместе с новомодным термином «Биткойн». Наверняка Вы в числе таковых. На сегодняшний день многим бизнесменам и простым обывателям интересно разобраться в природе криптовалют. Их популярность растет с каждым годом, и миллиардеры предрекают их заменой бумажным купюрам.
Разберемся с технологией «Блокчейн». По-сути, это распределенная база данных, не имеющая общего сервера. Информация не хранится в одном месте и распределена на несколько сотен, возможно, тысяч компьютеров по всему миру. Информация, естественно, шифруется.
В чем его польза?
Представьте банк, у которого есть своя центральная база данных. В ней содержится информация о кредитах, количестве денег на карте каждого клиента, данные о сотрудниках и тд. Также представим, что база данных этого банка подверглась хакерской атаке, и система защиты серверов не заметила проникновения злоумышленников. Наутро мы читаем в новостях, что в ходе атаки была украдена кругленькая сумма денег, и счета некоторых клиентов этого банка стали равны нулю.
Систему «Блокчейн» трудно взломать, потому что она состоит из цепочки блоков. Каждый блок содержит информацию, как о своих операциях, так и операциях предыдущего блока. Таким образом, содержание блоков может быть проверено другим.
На сегодня еще нет ни одного человека, которому удалось бы взломать технологию «Блокчейн». Чтобы украсть информацию, нужно взломать не один блок, а все блоки, то есть взломать сотни и тысячи компьютеров. Трудозатраты на взлом колоссальны.
«Блокчейн» также даёт возможно отправлять информацию анонимно. Главная особенность технологии – децентрализация. Надежность этой технологии мы рассмотрели на примере банка. Более того, «Блокчейн» исключает наличие «посредников». То есть, чтобы отправить крупную сумму денег, Вам не нужно обращаться в банк. Деньги можно отправить анонимно за 15 минут со своего кошелька в любую точку мира с маленькой комиссией. Миллионеры и миллиардеры говорят о криптовалюте, как о внедрении интернета в «90-ых». Возможно, нас ждет новая экономика.
«Блокчейн» также применим и в других сферах. Например, с помощью этой технологии можно защитить авторское право. Также безопасно хранить документы, осуществлять «честное» голосование на выборах и тд.
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