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Bitcoin and Blockchain

A blockchain is a distributed database that maintains a continuously growing list of ordered records called blocks. Each block contains a timestamp and a link to a previous block. By design, blockchains are inherently resistant to modification of the data — once recorded, the data in a block cannot be altered retroactively. Blockchains are "an o...

A blockchain is a distributed database that maintains a continuously growing list of ordered records called blocks. Each block contains a timestamp and a link to a previous block. By design, blockchains are inherently resistant to modification of the data — once recorded, the data in a block cannot be altered retroactively. Blockchains are "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way. The ledger itself can also be programmed to trigger transactions automatically."

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Bitcoin and Blockchain There are 4 products.

Showing 1 - 4 of 4 items
  • 74,30 € In Stock

    The World Needs An Open, Cheap & Ultrasecure Hardware Wallet! Securely generate and keep a private key. Signs transactions like a typical Bitcoin hardware wallet, but with an open design and unique security features.

    74,30 €
    In Stock
  • 29,75 € Out of stock

    The 1st Bitcoin Bearer Bond or just call it a "Bitcoin Stick" Opendime is a small USB stick that allows you to spend Bitcoin like a dollar bill. Pass it along multiple times. Connect to any USB to check balance. Unseal anytime to spend online. Trust no one. Multi-language user interface: 中文 • 日本語 • English • Portuguese • Français • Deutsch • Русский

    29,75 €
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    Out of stock
  • 37,15 € In-stock

    Digital Bitbox is a minimalist bitcoin hardware wallet packed with security and privacy. Safely hold and spend your coins with peace of mind.

    37,15 €
    In-stock
  • 66,08 € 82,60 € -20% Out of stock
    Sale!

    Bitcoin Wallet. The original & most secure hardware wallet.

    66,08 € 82,60 € -20%
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    Out of stock
Showing 1 - 4 of 4 items