Resolution criteria:

This market will resolve to "Yes" if the coin lands on heads after a single flip, and to "No" if it lands on tails. The flip must be conducted using a standard, fair coin, and the result must be clearly observable.

Background:

While a fair coin is theoretically expected to land on heads or tails with equal probability (50% each), studies have shown slight biases in real-world coin flips. Research indicates that a coin is slightly more likely to land on the same side it started from, with a probability of approximately 50.8%. (arxiv.org) However, for practical purposes, this deviation is minimal, and the coin flip is generally considered a fair random event.