The remaining 5% of Bitcoin's total supply is projected to take more than 100 years to mine, according to a report shared by Cointelegraph. This extended timeline is attributed to Bitcoin's halving mechanism, which reduces the reward for mining new blocks by half approximately every four years. As a result, the rate at which new Bitcoins are introduced into circulation slows significantly, extending the time required to mine the final portion of the cryptocurrency's capped supply of 21 million coins.