explain please

5. The following website provides simple functions for public-private keys and signature. (https://andersbrownworth.com/blockchain/public-private-keys/signatures) There is also a demo video. Complete the following tasks using the functions on the website. a. Use the following private key to generate the corresponding public key. Include the public key (or screenshot containing it) in your answer. l047929969417693268719040l84863439525258366585009183 l2151612289630648019967584 b. 6. Input the message \"Chuck sent David 0.356 bitcoins.\" and use the above private key to sign the message. Include the signature in your answer. Verify the signature using the verify function. Include the screenshot of the result. Now change the rst digit in the signature and verify again. Include the screenshot of the result. Do you observe the color of the block changes in c. and d? Why? What does this imply? 6. The following website provides simple demo functions for blockchains and mining. (https://andersbrownworth.com/blockchain/blockchain) There is also a demo video. Complete the following tasks using the functions on the website. Open the website, there should be 5 blocks that you can modify. a. Enter \"A sent B 1 bitcoin.\" in the data for the rst block. Press mine for the rst block and nd the nonce that generates a hash with 4 leading zeros. Include a screenshot of the rst block. Enter \"B sent C 0.5 bitcoins.\" in the second block. Mine and include a screenshot of the second block. Enter \"C sent D 0.25 bitcoins.\2. Construct a simple \"blockchain\" as follows. Please include the return/enter character at the end of each line in the blocks, except for the last line in a block (i.e., no enter at the end of the last line). Do not include blank lines or extra spaces in any of the blocks. Use SHA256 as your hash function. a. The rst block contains just one line of text: \"Alice sent Bob 2 bitcoins." b. The second block contains two lines: The rst line is the hash of the rst block (as a 64-digit hexadecimal number) The second line is the string \"Bob sent Clara 1.5 bitcoin.\" c. The third block contains two lines: The rst line is the hash of the second block (as a 64-digit hexadecimal number) The second line is the string \"Bob sent David 2 bitcoin and Clara sent Evan 0.5 bitcoin." d. The head pointer contains the hash of the third block. Include the contents of the three blocks and the head pointer in your answer. 3. Explore the Bitcoin blockchain and report the following information for the 100,000'h, the 300,000th, and 600,000' blocks on the main chain, respectively. (You can use https://blockchain.com to search for blocks/transactions) (a) Timestamp (b) Number of Transactions (c) Block size ((1) Transaction Volume (Output Total) (e) Transaction Fees (Fee Reward) (f) Hash of the block (g) Merlde root of the block Comparing the number of transactions, transactions fees, and transaction volume for the three blocks, what kind of pattern do you observe over time? 4. On the Bitcoin blockchain, nd the two transactions with the following hash/transaction ids: c5 84a4d9c847c67b17134be6f218f4a57d462734801c35455b6476a0e2a3db52 a8l78a72233724l4acO60b4bba4b33b8b4847a756fa76a715af7fd1lbfd143d5 Report the following information of the transaction: (a) Size of the Transaction (b) Received Time (c) Included in which block ((1) Number of inputs (e) Number of outputs (f) Total Inputs (g) Total Outputs (Transaction Volume) (h) Transaction Fees Do you observe sometimes an input address is the same as an output address? What does that mean