Why did Caldwell stop minting casascius bitcoins?
Could you elaborate on the reasons behind Caldwell's decision to cease minting Casascius Bitcoins? Was it a market-driven decision, or were there other factors at play? Given the popularity and novelty of Casascius Bitcoins, what challenges did Caldwell face in maintaining production? Were there any legal considerations or regulations that influenced this move? Understanding the rationale behind this decision could provide valuable insights into the cryptocurrency industry and its evolving landscape.