TrevorFrench / messTest

Messari On-Chain Data Challenge

This program allows the user to do the following:

• Retrieve current balance of a given list of public Ethereum addresses
• Retrieve current ENS balance of a given list of public Ethereum addresses
• Retrieve transaction history of a given list of public ethereum addresses
• Check the availability of any given ENS domain name

📄 Instructions

1. Navigate to Replit: https://replit.com/@TrevorFrench/messTest
2. Press "run" so the functions are accessible from the console
3. Type "get_balances(addresses)" in the console to print a dataframe containing the public addresses along with the current ETH balance of each address listed in the "addresses.json" file.
4. Type "get_token_balance(addresses, ensAddress, minABI)" in the console to print a dataframe containing public addresses and ENS balance for each address in the JSON file.
5. Type "fetch_all_transactions(14218907, 14218908, addresses)" in the console to return all transactions in blocks 14218907 through 14218908 where an address in the list was on either side of the transaction.
6. Type "check_available('trevorfrench')" into the console to see if 'trevorfrench.eth' is an available ENS domain name.

✍️ Author

Trevor French https://trevorfrench.com

Functions:

get_balances, get_token_balance, fetch_all_transactions, check_available

get_balances(addressList)

• addressList: a list of public ethereum addresses

#SET ADDRESS FILE
with open('addresses.json') as addressFile:
  addresses = json.load(addressFile)

#GET DATAFRAME OF WALLETS WITH CURRENT ETH BALANCES
get_balances(addresses)

get_token_balance(addressList, contractAddress, minABI)

• addressList: a list of public ethereum addresses
• contractAddress: address of desired contract you wish to query
• minABI: the ABI file of the specified contract containing at least the 'balanceOf' method

#SET ABI FILE
with open('minABI.json') as abiFile:
  minABI = json.load(abiFile)

#SET ADDRESS FILE
with open('addresses.json') as addressFile:
  addresses = json.load(addressFile)

#SET CONTRACT ADDRESS (ENS IN THIS CASE)
ensAddress = '0xC18360217D8F7Ab5e7c516566761Ea12Ce7F9D72'

#GET DATAFRAME OF WALLETS WITH CURRENT ENS BALANCES
get_token_balance(addresses, ensAddress, minABI)

fetch_all_transactions(beg, end, addressList)

• beg: first block to begin searching
• end: last block to search
• addressList: a list of public ethereum addresses

#SET ADDRESS FILE
with open('addresses.json') as addressFile:
  addresses = json.load(addressFile)

#GET DATAFRAME OF ALL TRANSACTIONS BETWEEN BLOCK 14218907 &
#14218908 WHERE AN ADDRESS IN THE ADDRESS LIST IS ON EITHER 
#SIDE OF THE TRANSACTION
fetch_all_transactions(14218907, 14218908, addresses)

check_available(domain)

• domain: a string containing the domain name you wish to check the availability of

#SET ABI FILE
with open('ensABI.json') as ensAbiFile:
  contractABI = json.load(ensAbiFile)

#CHECK IF A GIVEN DOMAIN IS AVAILABLE
check_available('trevorfrench') #Returns 'False'