BlockChain, architecture design, use cases, syllabus, futuristic, high-tech, 3D blueprint, complex network, nodes, blockchain layers, decentralized system, cryptocurrency, transaction flowchart, data encryption, digital ledger, cloud storage, virtual reality, cityscape, neon lights, skyscraper, modern interior, meeting room, projector screen, conference table, laptops, business professionals, suits, ties, formal attire, serious facial expressions, intense discussion, coffee cups, notes and pens.