The NOTE protocol  is a solution that uses Bitcoin for transaction recording and ownership confirmation, while token and NFT data are recorded through an off-chain indexer. It employs Satoshi Nakamoto's original Bitcoin script for contract validation. Several dApps have already been developed using this protocol, which also integrates Actions technology. One example of a Bitcoin DEX is https://utxo.exchange/, where sell orders created on the platform can be shared across social media channels like X and Telegram. The PSBT transaction signature technology is used in the backend. When it comes to Bitcoin's emphasis on privacy, the key point is ensuring its practical usage. The NOTE protocol and the various technologies implemented with it bring Bitcoin one step closer to being widely adopted by people around the world.

https://noteprotocol.org/