Block Inc, led by Jack Dorsey, is promoting the application of Bitcoin in payments, self-custody, and corporate finance through its subsidiaries Cash App, Square, and Bitkey. Block currently holds 8,584 Bitcoins, with an average purchase price of $30,405. Square has enabled merchants in the U.S. to accept Bitcoin payments, Cash App has integrated the Lightning Network and aims to achieve $10 billion in Bitcoin revenue by 2024, while Bitkey offers hardware self-custody solutions for everyday users. (Bitcoin Magazine)