What layer is RUNE?
Could you please elaborate on the question, 'What layer is RUNE?'? I'm interested in understanding the specific classification or positioning of RUNE within the cryptocurrency and blockchain ecosystem. Is it a layer-1 protocol? A layer-2 solution? Or perhaps it falls into a different category altogether? I'm looking for a concise yet informative description that helps me grasp its role and functionality within the broader crypto landscape.