Ключевые слова: abstract, background, brown, chain, chain lock, chains, clain, closeup, connection, crypto currency, detail, giant, heavy, industrial, industry, interconnected, interwoven, iron, large, link, material, metal, metallic, old, pattern, red, ring, rough, rust, rusted, rusty, rusty old metal, steel, strength, strong, texture, togetherness, whole,