Chaincode Version 1 was deprecated and removed in favor of more optimal data structures found in Version 2 and Version 3.
Chaincode Version 3 replaces Chaincode Version 2 and offers the following improvements:
- Normalized Query return structure
- Redesigned interface for purchasing and refunding energy
- Ability to inject transactions directly in order to easily produce data for the website
Chaincode Version 3 Documentation
Chaincode Version 2 Documentation