Blockchains Assignment/Computer Science

Question

Hello, I need help with a blockchains course. I would like to find a tutor who is available on a weekly basis until March. I will post my first task/code so that you get a feel for what kind of questions I will be asked. Thank you in advance.

Using the template provided at ipfs.py, create two functions

1. "pin_to_ipfs()" which takes a Python dictionary, and stores the dictionary (as JSON) on IPFS. The function should return the Content Identifier (CID) of the data stored.
2. "get_from_ipfs(cid)" which takes as input an IPFS CID and returns a Python dictionary containing the content. For this function, you may assume the content identified by the CID is valid JSON content. For example, you may assume that the CID does not refer to an image, video or other type of binary content that cannot be easily JSONified.

MY CODE:

import requests

import json

def pin_to_ipfs(data):

assert isinstance(data,dict), f"Error pin_to_ipfs expects a dictionary"

#YOUR CODE HERE

json_data = json.dumps(data)

url = "https://ipfs.infura.io:5001/api/v0/add"

headers = {

"Authorization": REMOVED API"

}

response = requests.post(url, headers=headers, files={"file": json_data})

response_data = response.json()

cid = response_data['Hash']

return cid

def get_from_ipfs(cid,content_type="json"):

assert isinstance(cid,str), f"get_from_ipfs accepts a cid in the form of a string"

#YOUR CODE HERE

url = f"https://ipfs.infura.io:5001/api/v0/cat?arg={cid}"

response = requests.get(url)

data = response.json()

assert isinstance(data,dict), f"get_from_ipfs should return a dict"

return data

Answer 1

If you're looking for a tutor for your blockchain course, I'd be happy to help with your assignments on a weekly basis until March.

This code shows you're working with IPFS, which is commonly used in blockchain applications for storing off-chain data in a decentralized way.

Your course will likely cover more blockchain concepts like consensus mechanisms, smart contracts, and cryptographic primitives as you progress. Please let me know.