95% of all Bitcoin is now mined — and it’s raising a new question about security

Bitcoin’s circulating supply surpassed 20 million coins on March 9, a milestone that places 95% of all BTC that will ever exist into the hands of holders and leaves fewer than 1 million coins still to be mined before the network reaches its hard cap of 21 million. The milestone was reached at block height 940,000, with the block mined by Foundry USA, according to Mempool data. It took roughly 17 years for miners to p…