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Bill Buchanan
2022-03-31 18:32:57 +01:00
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@@ -36,9 +36,8 @@ Determine the following [here](https://www.blockchain.com/charts):
### L1.3
Download and create the Python file defined on this page:
Download and create the Python file defined on this page [here](https://asecuritysite.com/encryption/bit):
https://asecuritysite.com/encryption/bit
```Python
import httplib2
@@ -86,33 +85,26 @@ print("Received for 1Gb...4to (BTC): ",int(content)/100000000)
Now run the Python file, and compare the results in L.1.2.
Total bitcoins in circulation:
Most recent hash block (last four hex digits):
Block reward per block:
Difficulty:
Average time between blocks:
Market capitalisation (USD):
24 hr price (USD):
24hr transactions (USD):
Hash rate:
Balance for 1GbVUSW5WJmRCpaCJ4hanUny77oDaWW4to:
* Total bitcoins in circulation:
* Most recent hash block (last four hex digits):
* Block reward per block:
* Difficulty:
* Average time between blocks:
* Market capitalisation (USD):
* 24 hr price (USD):
* 24hr transactions (USD):
* Hash rate:
* Balance for 1GbVUSW5WJmRCpaCJ4hanUny77oDaWW4to:
## Setting up your Ethereum wallet on Ropsten
The Ropsten network allows a user to test an Ethereum application, and using free Ether. Initially setup your MetaMask wallet.
The Ropsten network allows a user to test an Ethereum application, and using free Ether. Initially setup your MetaMask wallet. A document to outline how you set this up is [here](https://github.com/billbuchanan/appliedcrypto/blob/main/unit08_blockchain/lab/Metamask.pdf). Once you have set it up, answer the following:
* What is your public ID?
* Find out someone else's public ID, and send them 0.001 Ether.
* Can you see the transaction on the Ethereum network?
* What is your public ID (just define the first four hex values)?
* Find out someone else's public ID, and send them 0.001 Ether. If you are doing the lab on your own, send it to Bill (ID: 0xbB15B38e4ef6aF154b89A2E57E03Cd5cbD752233).
* Can you see the transaction on the Ethereum network? An example of a wallet is [here](https://ropsten.etherscan.io/address/0xbb15b38e4ef6af154b89a2e57e03cd5cbd752233).
* Can you see your transaction on the Ethereum network for the person you send it to?
* What was the transaction fee for the transfer? If you were using the main Ethereum network, how much would the transaction cost in Dollars?
* Ask someone to send you 0.001 Ether. Did you receive it? If you are doing the lab on your own, ask your lab tutor to send you 0.001 Ether.
## Creating a Smart Contract in Ethereum
So, let’s write a bit of code that does some simple maths. In the following we will implement sqrt(), sqr(), mul(), sub(), and add():