Demo Day Projects
Every Friday, participants showcase what they've built during the week. These are the real projects that emerged from our intensive collaboration and experimentation sessions.
HIGHLIGHTS
Blossom
A specification for HTTP endpoints that allow users to store blobs of data on publicly accessible servers
NIP-60
Nostr protocol extension for Cashu wallet functionality, enabling seamless eCash transactions within nostr applications.
NIP-61
Nutzaps: Receiving—and verifying— zaps, has always been a weak point in nostr. Nutzaps have enabled a new, more straightforward and verifiable way to participate in the zap-economy.
npub.cash
A nostr native Lightning Address service that provides Lightning addresses for everyone using Cashu eCash
Nsite
Host static websites on Nostr using blossom servers for storage and nostr relays for mapping
Tollgate
Freedom-enhancing internet infrastructure with four core modules: Merchant (e-cash payments), Valve (captive portal access control), Crows Nest (gateway discovery), and Janitor (updates via NIP-94). Successfully deployed at multiple events and now focusing on automated router-to-router payments and improved mobile clients. Demonstrates that free markets with small, frequent payments using bearer assets are the most efficient way to connect devices.
Hypernote
A hypermedia system built on nostr
DVMCP
Bridge implementation that connects Model Context Protocol (MCP) servers to Nostr's Data Vending Machine (DVM) ecosystem
“Any task in life is easier if we approach it with the one at a time attitude. ... To cite a whimsical saying; 'If you chase two rabbits, both of them will escape.' No one is adequate to do everything all at once. We have to select what is important, what is possible, and begin where we are, with what we have. And if we begin and if we keep going the weight, the worry, the doubt, the depression will begin to lift .... We can't do everything always, but we can do something now, and doing something will help to lift the weight and lessen the worry, 'The beginning,' said Plato, 'is the most important part.'”
— Richard L. Evans
SEC-00
Highlighter
A nostr client & NIP for sharing and discovering highlights from books, articles, and more.
Lightning Prisms
Programmable value splits for Lightning payments. See blog post for details.
NIP-90: Data Vending Machines
Nostr protocol extension for on-demand computation and data vending. See NIP and reference site.
“What one needs to do at every moment of one's life is to put an end to the old world and to begin a new world.”
— Nikolai Berdyaev, The Beginning and the End (1947)
SEC-01
Blossom
A specification for HTTP endpoints that allow users to store blobs of data on publicly accessible servers
npub.cash
A nostr native Lightning Address service that provides Lightning addresses for everyone using Cashu eCash
Nostr-idb
Collection of helper methods for storing nostr events in IndexedDB
Blossom Drive
A cloud drive built using blossom servers and nostr for decentralized file storage
Wikifreedia
Wikipedia on nostr enables a myriad of interesting and novel concepts that have captured the imagination of people outside the freedom tech ecosystem, including the founder of Wikipedia itself. Wikifreedia was born within SEC-01 with the radical idea of, instead of reducing bias in canonical wiki entries, a readily apparent pursuit, embrace bias and make it technologically impossible for a canonical entry to exist.
noStrudel on StartOS
noStrudel nostr client packaged for StartOS self-sovereign computing platform
nsecBunker on StartOS
nsecBunker remote signing service packaged for StartOS platform
featurestr-bountiestr
Feature request and bounty system built on nostr protocol
go-dvm
Go implementation of Data Vending Machine (DVM) for nostr
Malware DVMs
Data Vending Machines for malware analysis and security services
Wasm DVM
WebAssembly-based Data Vending Machine with plugin system
Note Duel
Competitive note-taking and content creation platform
GitPear
Git-based collaboration tool with nostr integration
Nostrocket
Decentralized organization and project management platform on nostr
Gonuts
Cashu mint implementation in Go for eCash functionality
keyNest
Secure key management solution for nostr and Bitcoin
LowEnt
Low entropy key generation and management tool
Zapstore
Zapstore is the first permissionless app store powered by open standards and your social graph
Alphaama
Just a nostr fucking client
NIP-66
Relay monitoring and discovery specification for nostr network health
Confidential computing research
Description to be added
“Just because we have taken one step down a wrong road is no reason why we have to take two.”
— Richard L. Evans
SEC-02
Nsite
Host static websites on Nostr using blossom servers for storage and nostr relays for mapping
NIP-60
Nostr protocol extension for Cashu wallet functionality, enabling seamless eCash transactions within nostr applications.
NIP-61
Nutzaps: Receiving—and verifying— zaps, has always been a weak point in nostr. Nutzaps have enabled a new, more straightforward and verifiable way to participate in the zap-economy.
Sov.Biz
Sovereign business platform for decentralized commerce
cypher.space
Privacy-focused communication and collaboration platform
PubPay
Public key-based payment system for seamless Bitcoin transactions
SatShoot
Freelancing on nostr
Tollgate
Freedom-enhancing internet infrastructure with four core modules: Merchant (e-cash payments), Valve (captive portal access control), Crows Nest (gateway discovery), and Janitor (updates via NIP-94). Successfully deployed at multiple events and now focusing on automated router-to-router payments and improved mobile clients. Demonstrates that free markets with small, frequent payments using bearer assets are the most efficient way to connect devices.
Kartapio
Restaurant menu and ordering system with Bitcoin payments
Sigit
SIGit is a secure, private and decentralised document signing tool built on Nostr and Blossom
Shopstr
Decentralized marketplace with NIP-60/61 Cashu integration
OpenBalance
Open-source accounting and financial management platform
Nostr Safebox
Nostr Safebox is the concept of a ‘safebox’ for Nostr. It’s a generalization of the wallet concept for storing secure, private personal information.The idea is that the safebox contains different item types, wallets, records, etc. You can give a client access by providing the nsec of the safebox. If you no longer trust the client, you can transfer the data to another safebox and delete the current one (no guarantees on deletion, of course)
SEC-03
Safebox
Secure storage solution for Bitcoin and nostr keys
Nutstash Design
User interface design for Cashu eCash wallet applications
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.
Bolt12 prisms
Lightning Network payment splitting and distribution system
nostr-epoxy
Reverse proxy for nostr relays with enhanced performance and caching
mimoty
A personal relay which is also a remote signing service for nostr
note mixer relay
A Nostr relay that mixes and anonymizes events using the Khatru framework.
Totem
Decentralized identity and reputation system
Nutstash v2 Re-Design
Redesign and rebuild Nutstash wallet from scratch. Implementining Nostr and Backup functionalities, together with Contacts and Chat (over nostr obviously) Now available at wallet.Nutstack.app as v2.1.0
Sigit Rebranding
A proposal to rebrand Sigitio including a full Landing page design to better market the product (never implemented)
SATS’N’FACTS Website
Crystallize all the organization and planning into a website (https://satsnfacts.btc.pub,) with full bitcoin ticketing system and merch store (powered by LNbits)
TollGate Branding and Landing page
Landing page plus all the branding assets currently in use 👇
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.
SEC-04
Plebeian Market
A content management system and marketplace that provides normies and communities infrastructure for circular economies and the move towards localisation
castr.me
Effortlessly turn any npub into a podcast feed.
soveng/nsite
Auto-deploy your GitHub page to nsite
rust-multiplatform
Rust framework for building cross-platform applications
DVMCP
Bridge implementation that connects Model Context Protocol (MCP) servers to Nostr's Data Vending Machine (DVM) ecosystem
next.nostr.watch
Next-generation nostr relay monitoring and analytics platform
spryte
Lightweight nostr client library and toolkit
Cassette
WASM-based Nostr relay implementation for the Cassette platform
Hypernote
A hypermedia system built on nostr
gitworkshop.dev
GitHub Actions integration and workflow automation platform
wavefunc.live
Internet radio registry on nostr with music recognition and other nostr native social features.
nsite manager
Management interface for nsite static website hosting
Olas
Photo-sharing client on nostr.
TENEX
Orchestrate the orchestrators. Autonomous, agentic learning through distributed cognition through nostr.
sec.membler.club
Community platform for Sovereign Engineering cohort members
nostr wallet app
Mobile wallet application with Cashu eCash integration
next block
Bitcoin block explorer and network analysis platform
nutmoji
Cashu eCash wallet with emoji-based token representation
NIP-37
Description to be added
The PROMO Protocol (NextBlock)
Open-source attention marketplace standard for Nostr. Decentralized protocol that turns attention into a tradeable asset on Nostr.
Billboard (NextBlock)
First implementation of the PROMO Protocol. Ethical advertising where people price their attention in Bitcoin and advertisers bid on it through marketplace mechanics, with complete control over preferences stored through Nostr. (Launching Summer 2025)
Telescope (NextBlock)
Open-source Bitcoin-based Temporal System. Open source library that powers the Observatory's calculations.
Observatory (NextBlock)
First Implementation of Telescope. Timing mechanism that Billboard uses for its PROMO Protocol implementation, creating a temporal framework aligned with Bitcoin's natural rhythm.
Nescrow
Open Escrow Protocol where and Escrow is a client, doesn’t need to run LN infrastructure with Escrow discovery, ratings & reviews.
SEC-05
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