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README.md

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 - [CoinShuffle++](https://github.com/decred/cspp) - CoinShuffle++ (CSPP) is a mixing protocol used to create Decred CoinJoin transactions.
 
 ## Layer 2
-- [Polygon Nightfall](https://polygon.technology/solutions/polygon-nightfall) - A Privacy-Focused Rollup for Enterprises ([GitHub](https://github.com/maticnetwork/nightfall-sdk/ )) 
+- [Polygon Nightfall](https://polygon.technology/solutions/polygon-nightfall) - A Privacy-Focused Rollup for Enterprises ✨️**ZK** ([GitHub](https://github.com/maticnetwork/nightfall-sdk/ )) 
 - [Zecrey](https://www.zecrey.com) - zkRollup basedLayer 2 protocol featuring privacy and scalability ([GitHub](https://github.com/Zecrey-Labs)) 
 - [Obscuro](https://obscu.ro) - Obscuro is a layer 2 solution for Ethereum that brings privacy and scale. It ensures the inputs, contract state and execution are always encrypted. No changes to dApps, just migrate and gain privacy ([Docs](https://docs.obscu.ro)) 
 - [ZKCHAOS](https://www.zkchaos.com) - ZKCHAOS is a layer2-based anonymous transaction protocol, and a fair game platform, which is built to enhance privacy for all kinds of cryptocurrency.
-- [StarkEX](https://starkware.co/starkex/) - A Layer-2 scalability engine, live on Ethereum Mainnet ([GitHub](https://github.com/starkware-libs/starkex-resources)) 
+- [StarkEX](https://starkware.co/starkex/) - A Layer-2 scalability engine, live on Ethereum Mainnet ✨️**ZK** ([GitHub](https://github.com/starkware-libs/starkex-resources)) 
 
 ## Hardware
 - [Deeper Network](https://www.deeper.network) - Web 3.0 infrastructure of the users, by the users, for the users.