Nymchat Nymchat (NYM — Nostr Ynstant Messenger) is a feature-rich, ephemeral chat client built on the Nostr protocol, bridged with Bitchat for pseudonymous, temporary messaging. No registration required — pick a nym and start chatting instantly, or log in with an existing Nostr account. Identity Ephemeral sessions: generate a temporary keypair and pseudonym per session Log in with a persistent Nostr identity (NIP-07, NIP-46, or nsec) Optional identity encryption with password, PIN, passkey, or biometrics Panic wipe: press-and-hold to instantly destroy all local data Messaging End-to-end encrypted 1:1 DMs via NIP-17 gift wraps (NIP-59) End-to-end encrypted group chats with rotating ephemeral keys and post-compromise recovery — relays cannot correlate group membership Forward secrecy and configurable disappearing messages Read receipts and typing indicators (per-scope: everyone, friends, or off) Rich text (Markdown), emoji reactions (NIP-25), polls, and custom emoji Peer-to-peer file sharing over WebRTC data channels Channels Location-based geohash channels (kind 20000) Named topic channels (kind 23333) Geohash Explorer: browse location channels on an interactive globe Voice & Video 1:1 and group audio/video calls — signaling over NIP-17 gift wraps, media peer-to-peer over WebRTC Lightning Send and receive Lightning zaps on messages and profiles (NIP-57) In-app flair shop: buy cosmetic styles and badges with Bitcoin Privacy & Moderation No Google Play Services, Firebase, or trackers User and keyword blocking, flood protection, image blur Group roles: owner, moderator, kick, ban, transfer ownership Customization Themes: Bitchat, Matrix Green, Amber Terminal, Cyberpunk, Hacker Blue, Ghost IRC-style or bubble layout, adjustable text size, wallpapers