As a keen follower of the cryptocurrency market, I'm particularly interested in the Ohm cryptocurrency. However, I'm facing some challenges in identifying a reliable platform to purchase it. Could you please provide some insight into where I can safely and securely buy Ohm crypto? Are there any specific exchanges or brokerages that you recommend? Additionally, what factors should I consider while choosing a platform to ensure the safety of my investment? Your guidance in this matter would be greatly appreciated.