0xchat

No Registration Required As a chat client based on the Nostr protocol, all you need to do is create a Nostr account to log in—no phone number, email, or any other registration method is required. You must safeguard your nsec key, as it grants you control over your data. Additionally, your Nostr account is compatible with other Nostr clients. Private Groups For private groups, we utilize NIP-17 chat rooms to support group member management. In this setup, group messages are processed via gift wrapping and sent to all group members, ensuring only they receive the messages. Relay Groups For open/closed groups, we implement NIP-29. In open groups, anyone can join, while closed groups require administrative approval. Group owners or admins can manage permissions, add or remove members, and send group notes. This setup supports large group chats. Open Channels We also offer open channel functionality, compatible with other Nostr clients. These channels are public, allowing anyone to join and speak, with message content visible to all. This feature is primarily designed to foster communities and enhance chat enjoyment. Audio & Video Calls We provide E2EE audio and video calling between contacts. Signaling is handled via NIP-100 over Nostr relays, while actual audio and video calls are facilitated through ICE servers. Push Notifications Lightning Payments?? For Lightning payments, we’ve integrated the Cashu wallet into the app, leveraging the Lightning Network for e-cash deposits and withdrawals. Users can send e-cash to friends and group members within the app. E-cash is stored locally, with ownership remaining anonymous, effectively protecting user privacy. Badge Collection Lastly, we offer a badge collection feature. By donating to us, you can earn badges of different levels. These badges can be set as your avatar and come with corresponding privileges.

0xchat is a secure messaging app based on the Nostr protocol, requiring no registration to log in. It offers private groups, open channels, audio/video calls, and anonymous payments, prioritizing user privacy and supporting diverse communication methods.