1. Briefly the describe the supply mechanism of Bitcoin by the following details: a) What is the average time interval between blocks? What is the underlying reason for not having a shorter time interval? c) What are the main incentives for miners? What will happen when block rewards end? 2. What are the main reasons for the increased total market cap for the cryptocurrencies during Pandemics? What do you expect for these markets when we wee see normalization in the economic conditions? 3. Briefly describe Ethereum and also Proof of Stake (POS) mechanism. 4. Describe the current status of DeFI with some statistics. How will decentralized protocols be affected by ETH 2.0