I had 4 interviews with them and then they ghosted me.
Damn, where did you end up going?
Exactly same experience. 4 interviews then ghosted.
What type of role were you interviewing for that they ghosted on?
I recently interviewed with consensys: 1. First call with recruiter 2. Then an assignment 3. Then technical interview 4. Then team fit round with multiple people from team Offer and Negotiation
You should be familiar with Solidity, how EVM works, how smart contracts work, know different consensus algorithms, and know merkle tree/what goes into a block header.