📬❄️📦Adafruit Holiday Shipping Deadlines 2019:
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Blockchain turns that on its head. It’s effectively a digital ledger without a master copy. Transactions aren’t stored on any on computer, but instead stored on a network of computers, and they’re verified the same way. Transactions are recorded across the entire network through a shared record that no single computer holds. Transactions remain valid even when a PC goes offline – called ‘cold storage’ in the world of Bitcoin – making always-online game clients obsolete.
Strangely, it’s decentralization that makes true ownership possible. The database exists independent of any single person or organization, which makes its records objective, fair, and true. In blockchain circles, this is counter-intuitively labelled as “trust-less.” The implication isn’t that the blockchain can’t be trusted but, instead, that blockchain makes trust unnecessary. It doesn’t matter if you trust everyone else one the blockchain, because fraud is impossible – on the blockchain itself, at least. It’s a clever, and realistic, implementation.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.