What are the properties of Hash function?

1-Scalable, reliable, secure, maintainable

2-Modern, ideally suitable to digital transformation, social enabled

3-Efficient, dynamic, cognitive and reliable

4-Deterministic, Non-invertible, Uniform and Collision resistance

Which of the following activities is NOT conducted by the miners in Bitcoin network?

1-verifying the private keys

2-Proof-of-work

3-validate transactions

4-receiving transaction fees