A Bitcoin superannuation fund currently doesn’t exist in the same format as a traditional retail super fund in that you can’t make your superannuation guarantee contributions direct from an employer to a Bitcoin super fund as would normally occur with fiat contributions. Bitcoin funds exist internationally, with a hugely popular investment fund based in America call Grayscale with a highly successful drop gold campaign. Although not a specific retirement fund, it allows individuals to purchase shares of the fund to enable some exposure to the emerging asset class.