Horizen migration check script

Command line script to verify correctness of Horizen migration data.

Prerequisites:

• Execute a full dump of ZEND and EON and produce the final json artifacts following these instructions
• RPC connection to a BASE node, and addresses of the official EON and ZEND Vault contracts
• NodeJS environment locally installed

Instructions:

• Download this project and install the dependencies with:

  npm install
  

• Rename .env.template file into .env and complete the nested properties.

• Execute with:

  node index.js
  

• The script will calculate locally a cumulative hash from the dumps, and compare it to the one stored onchain in the vault smart contracts.
  If everything goes well, you will obtain a log like this in the console:

  Checking EON balances
  Hash computed locally: 0xbae9810c922613c3eb3364fe76bd19736472a3afb490e2772adfc25605479981
  Hash from contract: 0xbae9810c922613c3eb3364fe76bd19736472a3afb490e2772adfc25605479981
  ✅ EON balances verified correctly
  Checking ZEND balances
  Hash computed locally: 0x24afbbf6c451bc5e719e198d45cb97e084d6fddf0a3f1d203badda5a1635ea13
  Hash from contract: 0x24afbbf6c451bc5e719e198d45cb97e084d6fddf0a3f1d203badda5a1635ea13
  ✅ ZEND balances verified correctly
  ✅ All balances are correct!