What will happen when 21 mil blocks are mined?

[zodiac3011]

I think that you have not to think about this because the chances to be alive when are blocks are mined are low.

A picture[1] that i took from bitcoin wiki shows that even after 100 years there are still blocks to be mined.

[1] https://en.bitcoin.it/w/images/en/b/b7/Controlled_supply-timeline_estimation.png

Actually this bitcoin's ideal thing of 10 minute block was from the time when technology hadn't grown as fast as today so I think that we don't have a clear idea when the block of 21mil will be mined. Just look at the dream of Bitfury, they intend to unleash 1000 Ph although this could take a long time but if that comes true this will break the ideal thing of bitcoin for sure

[Amph]

It won't take more than 50 years from now untill all coins are mined, i think that there will come better and better technologys, so the mining will fo much much faster than it is now. At least i hope that will happen and then it is time to buy some miners

the mining activity will be exhausted in a much less time frame, we are talking about 2032 at most or 2036, so 20 years not 50

[ranochigo]

As long as there is someone mining, the blocks will continue beyond 21 million. You are more likely talking about 21 million Bitcoin but that isn't accurate. In reality, only 20999864.7679BTC can exist. After the block rewards become insignificant, the main income would turn to transaction fees. The prices would likely be higher, electrical prices and hardware efficiency would be better. The difficulty would adjust itself if people decides to bail out of the mining game. Keep in mind that the block size will increase which would give you more transaction fees as more transactions can be included.