What are instant bitcoin transactions & how do they work?
In today's rapidly evolving world of digital currencies, understanding the intricacies of instant Bitcoin transactions has become paramount. Could you elaborate on what instant bitcoin transactions are and how they function in practical applications? I'm particularly interested in how the blockchain technology facilitates these speedy transfers, what the underlying mechanisms are, and if there are any limitations or considerations one should be aware of when utilizing this feature. Additionally, I'd like to know if these transactions are truly instantaneous or if there's a slight delay, and if there are any associated costs involved. Your insights would be invaluable in my quest to comprehend the nuances of this fascinating aspect of cryptocurrency.