Solana has plenty of works in the space of ZK and the compression. Some of it's work has been done by the light protocol. And that work has built the Helius in such a way that it has helped the Solana ecosystem a lot. And now that company is being acquired by the Helius. Same company that does the onchain API service. 

Now that company is joining the Helius and they made the announcement of the closing doors on the X. 

As you can see a lot of work has been done on the Zk proof and also on the ZK compression. You would find that some of its work is as good as the work done on the Ethereum and it has getting better. Solana is making the most of the developer work. And it is building them money. 

You can read official note here. 

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