Among all Layer 2 solutions, ZK-Rollup is highly recommended for its data availability and same-level security as Layer 1. — Among all Layer 2 solutions, ZK-Rollup is highly recommended for its data availability and same-level security as Layer 1. ZK-Rollup treats one block as a processing unit, using zero-knowledge proof to verify the validity of the world state changes caused by the block, hence reducing the per-transaction cost of going…