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 - Decentralized wallet address ownership verification: Use Waku to enable communication between dApp and wallet such as signature or zeroknowledge proof exchange to prove identity.
 - Notifications centre: use an SDK (probably go-waku?) to build general Notification protocol over Waku and a mobile app allowing you to replace centralized Push Notifications provided by Apple/Google
 - API generator: build a tool to generate a Waku protocol (and code) from a provided OpenAPI specification 
+- Secure DeFi: When a user wants to perform a transaction, ensure the transaction is made to the correct counter-party address within the correct chain.
+- News over Waku: Platform where people can publish news which can be voted and commented.
+- Budget approval app: Allow a community to approve and decide the best way to handle the common funds, and make the transactions transparent to the community.
+- Property resitry app: Real-state (buildings, flats, lands) registry where buy/sell operations are tracked.
 - Leader Election Protocol: Leader election can viewed as a soft consensus mechanism. Implement something like [RAFT](https://raft.github.io/) as a library on top of Waku (using any SDK), so that users can easily plug it in their applications
 - Reputation systems:
 - Censorship resistant reviews plugin: