I would know some things about the creation of a blockchain for cryptocurrency (I let assume for simplicity Bitcoins). I red online that miners verify the blockchain, and when they verify a block, they earn Bitcoins. Here are my questions:
1) At the dawn of Bitcoins, so when the blockchain didn't have block, how people/miners could earn Bitcoins? If there weren't block, who released Bitcoins?
2) What problem miners solve to earn Bitcoins?
3) If two (or more) miners solve the same problem, will all be paid?
thanks for the answers