¿Cómo se puede comprobar la cotización en tiempo real de Bitcoin?

Could you please elaborate on how one can verify the real-time pricing of Bitcoin? Is there a specific platform or tool that you recommend for tracking its value accurately and efficiently? I'm particularly interested in understanding the methodology behind these updates and how they ensure that the data remains reliable and up-to-date. Additionally, are there any common pitfalls or mistakes that investors should avoid when monitoring Bitcoin's real-time pricing?