This is an ongoing list of questions for developer interviews (blockchain and crypto related)

If there is NO function on the receiving end of an ether send, what happens to the ether?

There’s usually a fallback function – and if that isn’t present, the ether is lost.

What does Interoperability mean in the crypto space?

  • Moving Information – e.g. – editing a word doc on your tablet and getting the latest version picked up on your laptop
  • Moving Users  – OAuth and OpenID type of interoperability
  • Moving Value  – e.g. Ethereum provides value to all tokens that live atop it.

What are sync proofs? 

How do you avoid double spend of an asset from a chain to another chain – e.g. how do you prevent BTC spend on LTC or Dash? The idea is to provide a sync proof (few KB of data) along with the asset

Re-Entrancy, Randomness

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

Initial Consultation

Anuj Varma – who has written posts on Anuj Varma, Hands-On Technology Architect, Clean Air Activist.

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