The first Bitcoin block is known as the “genesis block”. The genesis block was mined by Satoshi Nakamoto. It generated the very first 50 BTC as the block reward which was given to address 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa. Unfortunately the 50 BTC is unspendable. Satoshi Nakamoto intentionally created the first 50 Bitcoin unspendable. Since then the address received 16.9 Bitcoin from random people as a tribute to Satoshi.