Ключевые слова: altcoin, art, background, bitcoin, block, blockchain, coin, collectibles, concept, contour, crypto, cryptocurrency, currency, decentralized, design, digital, ethereum, exchange, finance, fungible, future, icon, illustration, innovation, investment, isolated, line, linear, lineart, mobile, modern, money, network, non, online, outline, pay, payment, phone, smartphone, technology, token, trade, transaction, unique, web,