SEC-03

Ecash

Before Bitcoin, ecash was mostly slides and papers. Late 2024, SEC-03 shipped wallets and nostr apps that move bearer sats: Nutstash, Safebox, Athenut, fifteen Friday demos.

Built in this cohort.

Athenut

Privacy-preserving Web Search Powered by Kagi & Cashu

GitHub athenut-mint

Bolt12 prisms

Lightning Network payment splitting and distribution system

primal.net

mimoty

A personal relay which is also a remote signing service for nostr

github.com/gzuuus/mimoty

nostr MLS

Encrypted group messages on Nostr with Messaging Layer Security Protocol

Nostr-based Tollgate

Decentralized internet access using nostr for communication and discovery. Enables mesh network adoption by transferring infrastructure costs to users permissionlessly. Uses captive portals and MAC address tracking to allow anonymous internet access while still enabling proper accounting of purchased access.

github.com/OpenTollGate/tollgate

nostr-epoxy

Reverse proxy for nostr relays with enhanced performance and caching

github.com/Origami74/nostr-epoxy-reverse-proxy

note mixer relay

A Nostr relay that mixes and anonymizes events using the Khatru framework.

github.com/gzuuus/note-mixer-relay

Novia

Nostr Video Archive - a service to build a video archive using yt-dlp, indexes all videos, and publishes metadata as NIP-71 video events. It allows users to request archived videos from Novia instances (using a DVM) to watch videos from the decentralized archives.

github.com/teamnovia/novia

Nutstash Design

User interface design for Cashu eCash wallet applications

nutstash.app

Nutstash v2 Re-Design

Multi-mint Cashu wallet rebuilt from scratch. Send ecash to nostr keys, backup via nostr, contacts and chat built in. Multi-platform, self-custodial, privacy-first.

github.com/gandlafbtc/nutstash-wallet

Safebox

Secure storage solution for Bitcoin and nostr keys

github.com/trbouma/safebox

SATS’N’FACTS Website

Bitcoin technical unconference in Thailand. Hackathons, art exhibitions, and community events bringing together Bitcoin and Nostr builders in Asia. Bitcoin ticketing and merch store powered by LNbits.

stacker.news/items/868441

TollGate Branding and Landing page

Branding, design, and landing page for TollGate — the pay-as-you-go Bitcoin ecash WiFi network. No KYC, no subscriptions, no sign-ups. Share your internet with your community and earn sats.

tollgate.me

Totem

Decentralized identity and reputation system

github.com/totemize

voca

Privacy-preserving offline text-to-speech app for GrapheneOS