Just checked the numbers and Bitcoin's circulating supply just crossed 20 million. Pretty wild to think about when all bitcoins be mined at this point. According to the math, we're basically in the final stretch now.

The thing is, when will all bitcoins be mined really comes down to the halving schedule. The last million BTC? That's gonna take roughly another 114 years to mine out. So we're talking 2140 or so before the final coin gets minted. The mining rewards keep getting cut in half every four years, which means fewer and fewer BTC entering circulation as time goes on.

Makes you think about what the network looks like in a century. When will all bitcoins be mined is basically a locked-in timeline at this point - no surprises coming there. The supply cap of 21 million is hardcoded, so we know exactly how this story ends, just not in our lifetime.