NFTLegends BlockHash-based lottery

About

The script picks pseudo-random Ethereum winner account from the list using native blockchain randomness source - the blockhash on the given block height.

It uses the “Mersenne Twister” deterministic 623-dimensionally equidistributed uniform pseudorandom number generator, one of the most extensively tested randomizers in existence.

Accounts collected through the form were checked to comply ethereum account format (42-digit hex string starting with '0x'). Duplicates were removed and items sorted alphabetically. See refine_eth_accounts.py script for details.

Rounds

Round 0

• Block: 12362727 on Ethereum Mainnet #1
• Estimated Target Date: Mon May 03 2021 17:58:29 GMT
• Refined accounts list: accounts.txt
• Participants total: 13208
• Round log round_000.log
• Winner: 0x58aaEf291ccE6D326D43952b3b7173aEadAab37e

Round 1

• Block: 12408686
• Estimated Target Date: Mon May 10 2021 19:55 GMT
• Refined accounts list: accounts.txt
• Participants total: 13560
• Round log round_001.log
• Winner: 0x68360a6306cA82B769898034c83c41c09ab0e689

How to verify

Just run the lottery.py after the target block got mined + 3 confirmations passed.

pip install -r requirements.txt
python3 lottery.py

The output:

Load accounts from accounts.txt... DONE
Sanity checks... DONE
Total accounts loaded: 13208
Connect to Web3 Ethereum provider... DONE
Target block: 12362727 
Confirmations: 3 

Target block 12362727 mined!
Hash of the block 12362727 is 0x7c34217a7b9bd20910375b9d36dcfb6fa082bab59a4fb8d7bcb6f469e3a7b4d9
See it on Etherscan https://etherscan.io/block/12362727
Target block 12362731 confirmed!

The winner is: 0x58aaEf291ccE6D326D43952b3b7173aEadAab37e