Prepare for the Blockchain Developer Certification. Master blockchain concepts with flashcards and multiple choice questions. Explanation-based learning for your success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


Why is it recommended for smart contracts to start with a commented license?

  1. To comply with Ethereum blockchain guidelines

  2. To keep the source code secure

  3. To inform users about the usage rights of the contract

  4. To ensure better performance of the contracts

The correct answer is: To inform users about the usage rights of the contract

Starting smart contracts with a commented license is recommended primarily to inform users about the usage rights of the contract. By including a license comment at the top of the source code, developers communicate how the contract can be used, modified, or distributed. This is crucial in open-source environments, where clarity around rights and limitations can foster collaboration and innovation, while also protecting the original work of the developer. Having an explicit license helps prevent misunderstandings and misuse of the contract, as users will know their rights and obligations. This is particularly important in the blockchain ecosystem, where code can be easily copied and utilized without consent. While there may be implications for compliance with certain guidelines or concerns about performance, those are not the primary reasons for starting with a commented license. The key focus is on clarity in rights and how the contract can be able to be utilized by others.