The BDS test was conducted using embedding dimensions m=2 and m=3, with the noise threshold parameter ε set at multiples of the standard deviation (0.5σ, 1σ, 1.5σ, and 2σ). This is consistent with previous studies such as Kulbhar and Subramaniam 2023. For each coin, a total of eight test statistics were computed, and significance was assessed at the 10%, 5%, and 1% levels, denoted by *, **, and ***, respectively.