For 16 hours to be 0.01% of the total time, bitcoin will have to be 160000 hours old, which is about 6666 days, or 1913 days from today. So on April 5th, 2027

For 16 hours to be 0.01% of the total time, bitcoin will have to be 160000 hours old, which is about 6666 days, or 1913 days from today. So on April 5th, 2027 (assuming it has no more downtime before then), bitcoin will be able to claim four-9s of reliability.