- Size: 100 pieces coin holders with foam gaskets to fit American Silver Eagle Liberty Coin & JFK Half Dollar & Bitcoin and so on. Coin case inner diameter 46x3.5mm, outer diameter 52x6mm. - Form Gasket: Inner foam gasket divided into 20/25/30/35/40.6/46mm, thickness is 3mm. Different Eva foam gaskets can hold most popular coins, keep coins from sliding and scratching. - Excellent Quality: Made of high-transparent and thickened plastic material, dust-proof and oxidation-resisting, practical gift for coin collectors to store and protect your favorite coins. - Easy To Use: Each round coin case has a crescent opening in the outside rim, more effortless to open, making it convenient to use. - Wide Applications: Clear coin storage container facilitate coin storage, view and exchange; Suitable for awards ceremony, business gifts, exhibitions, nice gift for coin lovers. - 100% Satisfaction-Back with SPLF 100% satisfaction servie, buy with confidence.Note:coins not included.
Size: 46mm*100pcs
Perhaps everyone has heard of Bitcoin or cryptocurrencies. They appear in the media at moments when they are drawing their last breath (the price has dropped a bit) or when everyone is going crazy and buying (the price has gone up a bit). However, only a few people are experimenting with using them in their lives. Can something so volatile be used reliably? And if we don't care about the price, can cryptocurrencies be used in other ways? For example, to fund creators, or for crowdfunding. Can you use cryptocurrencies to take out a loan? How to use them in international trade or to promote your products? How to build a local crypto economy in your social bubble? Can bitcoin be used to expand personal and social contacts? We can even use bitcoin as a form of "insurance" against the failure of the traditional financial system. Juraj Bednár is a serial entrepreneur. He has founded several companies in the field of information technology. He is a co-founder of the non-profit project Paralelná Polis, thanks to which he discovered the potential of cryptocurrencies in life and business. By combining the principle of hacking (ethical hacking, life hacking, ...) and cryptocurrencies, he creates mindsets with which you can introduce cryptocurrencies into your life. The aim of his books is to open the minds of his readers to new possibilities – if we have the courage to experiment.
- Size: 32 pieces coin holders with foam gaskets to fit American Silver Eagle Liberty Coin & JFK Half Dollar & Bitcoin and so on. Coin case inner diameter 46x3.5mm, outer diameter 52x6mm. - Form Gasket: Inner foam gasket divided into 20/25/30/35/40.6/46mm, thickness is 3mm. Different Eva foam gaskets can hold most popular coins, keep coins from sliding and scratching. - Excellent Quality: Made of high-transparent and thickened plastic material, dust-proof and oxidation-resisting, practical gift for coin collectors to store and protect your favorite coins. - Easy To Use: Each round coin case has a crescent opening in the outside rim, more effortless to open, making it convenient to use. - Wide Applications: Clear coin storage container facilitate coin storage, view and exchange; Suitable for awards ceremony, business gifts, exhibitions, nice gift for coin lovers. - 100% Satisfaction-Back with SPLF 100% satisfaction servie, buy with confidence.Note:coins not included.
Size: 46mm*32pcs
Join the technological revolution that’s taking the financial world by storm. Mastering Bitcoin is your guide through the seemingly complex world of bitcoin, providing the knowledge you need to participate in the internet of money. Whether you’re building the next killer app, investing in a startup, or simply curious about the technology, this revised and expanded second edition provides essential detail to get you started. Bitcoin, the first successful decentralized digital currency, is still in its early stages and yet it’s already spawned a multi-billion-dollar global economy open to anyone with the knowledge and passion to participate. Mastering Bitcoin provides the knowledge. You simply supply the passion. The second edition includes: * A broad introduction of bitcoin and its underlying blockchain—ideal for non-technical users, investors, and business executives * An explanation of the technical foundations of bitcoin and cryptographic currencies for developers, engineers, and software and systems architects * Details of the bitcoin decentralized network, peer-to-peer architecture, transaction lifecycle, and security principles * New developments such as Segregated Witness, Payment Channels, and Lightning Network * A deep dive into blockchain applications, including how to combine the building blocks offered by this platform into higher-level applications * User stories, analogies, examples, and code snippets illustrating key technical concepts
- Cada paquete contiene 100 x 100 billetes Scratch Cash - Los billetes Scratch Cash están impresos en ambos lados - Los billetes Scratch Cash tienen un gráfico que retoma su simbología
- Flash color changing mode. Press the touch button to last color,auto color changing mode works.Perfect for home decoration, play room, man cave, office,kids room decor, perfect night light - Energy saving. Power spend: 0.012kw.h/24 hours; LED life span: 10000hours. - red, green, blue, yellow, cyan, pink, white, color changing. can fixed one color or 7 color gradual changing. - Very low heat-conductive, will not be hot after long time working,Soft warm light, will not hurt eyes - 100% RISK-FREE SATISFACTION GUARANTEE,If for any reason you are not satisfied with your purchase, please contact us. Our side commitment to you will make things right! promise you to confident your buying.
- Farbwechsel - Energieeffizient
- Cambio de color - Eficiencia energética
O Bitcoin foi prometido como uma tecnologia libertadora, uma alternativa de livre mercado ao dinheiro controlado pelo estado. Mas essa promessa foi quebrada depois que um pequeno grupo de insiders assumiu o projeto e alterou fundamentalmente o design do Bitcoin. Poucas pessoas conhecem a verdadeira história do Bitcoin e a configuração original dele devido a anos de intensa censura, manipulação de redes sociais e rígidos controles de informação online. Sequestrando o Bitcoin destrói as narrativas mais populares em torno da criptomoeda e corrige o registro histórico. A paixão e a dor de Roger Ver transparecem enquanto ele conta a história de um projeto amado que foi corrompido diante dos seus olhos. Escrito por uma das figuras mais proeminentes da indústria de criptomoedas, este livro é impossível de ignorar. Da aba interna: O Bitcoin foi capturado e alterado para pior. Essa é a conclusão inegável de Sequestrando o Bitcoin. Repleto de história e verdades inconvenientes, este livro embarca em uma cruzada contra as narrativas mais populares que cercam o BTC. O Bitcoin é realmente descentralizado? Ele deveria ser ouro digital ou dinheiro digital? O design original realmente tinha problemas de escalabilidade? Roger Ver aborda essas questões de forma direta e fornece respostas desconfortáveis. Roger Ver é o primeiro investidor mundial em startups de Bitcoin e tem sido um nome proeminente na indústria de criptomoedas desde o início. No entanto, como ele confessa na introdução, este livro não é uma história de amor. É um devastador relato sobre a corrupção, propaganda e centralização de poder no Bitcoin.
- Diseño minimalista, excelente artesanía El Avalon Nano 3 cuenta con un diseño minimalista que se adapta a cualquier entorno, elegante y funcional. - Eficiencia energética, respetuosa con el medio ambiente Con una potencia máxima de solo 140 W, proporciona calor con un bajo consumo de energía, ideal para un uso duradero en invierno. - Funcionamiento silencioso, descanso cómodo Con un nivel de ruido de solo 33-36 dB, trabaja extremadamente silenciosamente, no interfiere con el trabajo ni el ocio y crea un ambiente tranquilo. - Compacto y portátil, fácil de transportar Con un peso de solo 725 g y unas dimensiones de 247 x 157 x 88 mm, el dispositivo es ligero, portátil e ideal para uso personal y espacios pequeños. - Temperatura agradable, ideal para el invierno. La temperatura de salida de aire es de 40 °C ~ 60 °C y proporciona rápidamente un calor agradable para calentar las manos y los pies fríos en invierno.
- Ventaja: vida útil eficiente de 10.000 horas de lámparas LED. Seguro al tacto. No sobrecalienta - MODO - 8 modos de color cambiables, incluidos cian, azul, verde, rojo, blanco, amarillo y púrpura, así como un modo intermitente que muestra todos los colores. - ATENCIÓN - La lámpara juega trucos en los ojos, es una placa de vidrio guía de luz en realidad. Pero parece una verdadera luz 3D por la noche. - USADO IDEALMENTE - La luz acrílica 3D puede ser el uso en el dormitorio, en la habitación de los niños, en la sala de estar, en la barra, en los hoteles, en la tienda, en el café, en el restaurante, etc. como luz decorativa. También se puede utilizar como regalo de festival, cumpleaños, Navidad - Garantía de satisfacción 100% libre de riesgos: ofrecemos una garantía de satisfacción 100% libre de riesgos para que puedas comprar con confianza.