Our greatest asset as bitcoiners is the blossoming open source community that makes this movement possible.
Open source software empowers individuals around the world while remaining independent of governments and large corporations who continuously attempt to track, censor, and control us. Many of these projects are not run for profit and do not have large budgets supporting them. Instead, they rely on an ever increasing network of individuals worldwide who contribute time and energy to build them out, often without compensation.
With Bitcoin Amsterdam we aim to facilitate the best and largest bitcoin focused event every year which is both accessible and welcoming to newcomers while remaining true to the bitcoin and open source ethos. With this mission in mind, it is clear we must support open source contributors and projects however we can.
Contributors of the projects below with a commit prior to October 1st, 2024 can verify their commits and apply for a free three day pass below.
Note that previously purchased passes are non-refundable, but may be transferred.
Order is alphabetical and unranked.
10101 combines the power of a self-custodial on-chain and off-chain wallet with the vast world of trading.
A browser extension to bring the Bitcoin Lightning Network to the browser.
AQUA is a free, open-source wallet for iOS and Android.
The biggest design update for Bitcoin Core in the works.
Bitkit offers on-chain and lightning transactions, as well as user-controlled social profiles and contacts; easy payments to contacts; key-based log-ins; and data streaming from private and public feeds into widgets.
An accessible, reliable and secure custodial Lightning wallet built for everyday payments and new user onboarding. Features built-in Bitcoin education, Stablesats for volatility management and a robust set of merchant features.
Bitcoin Lightning Wallet with focus on usability and user experience
A powerful mobile wallet available on both android and iphone that is both easy to use and has power user features including multisig.
Offer Bitcoiners a way to quickly, easily, and reliably generate, memorise and recall Bitcoin wallet seed words using user-generated patterns or cell co-ordinates combined with randomly shuffled 'grids' of Bitcoin seed words.
An easy to use lightning wallet available on android and iphone that includes podcasting 2.0 and point of sale capability.
Preserving #bitcoin privacy
A powerful desktop wallet that can be used in a variety of different ways including with hardware wallets, multisig, and lightning.
A Cashu wallet for Android and iOS
Simple open-source non-custodial bitcoin/lightning wallet with a strong bias towards usability, accessibility and good UX
Self sovereign, secure, powerful, easy to use wallet that utilizes your own Bitcoin Core node as a backend. Providing an easy to use interface to interact with your nodes non wallet capabilities.
Krux is open-source firmware that enables anyone to build their own Bitcoin signing device via off-the-shelf parts.
A privacy focused wallet that uses a concept called statechains to enable users to swap bitcoin off chain with minimal fees.
E-cash wallet with a focus on performance and usability. Cash is issued by mints and backed by Bitcoin via the Cashu protocol and Lightning Network.
Self-custodial lightning wallet that runs everywhere.
An extremely easy to use mobile wallet on both android and iphone that works with both traditional bitcoin payments and lightning.
A privacy focused android wallet that makes it easy to use collaborative transactions to improve privacy on chain. Samourai also makes it easy to use your own node with a QR code pairing process and Tor.
A bitcoin first mobile application concept.
A full featured desktop wallet that is compatible with electrum servers. Works with all major hardware wallets, including multisig configurations, and has built in paynym, payjoin, and whirlpool coinjoin support.
A desktop wallet that makes it easy to use any hardware wallet with your own node, including multisig configurations.
Open-source, non-custodial, privacy focused Bitcoin wallet for Windows, Linux, and Mac. Built-in Tor, CoinJoin, and coin control features.
The easiest way to interact with your own lightning full node on android and iphone.
Phoenix is a Bitcoin wallet developed by ACINQ, that allows you to send and receive bitcoins securely over the Lightning Network. It is self-custodial, which means that you hold the keys of the wallet.
Scalable, Trust-Minimized, Distributed Timestamping with Bitcoin.
Amethyst brings the best social network to your Android phone. Just insert your Nostr private key and start posting.
Find bitcoin friendly businesses near you.
Accept bitcoin for goods and services easily and reliably.
A decentralized network that allows users to communicate bitcoin trades peer-2-peer.
Fully open source hardware Bitcoin ASIC miner. Ultra is the 3rd major revision of the bitaxe that now includes the BM1366 ASIC from the S19XP
The reference client and backbone of the bitcoin network - both a node and a wallet.
Blockchain Commons works with developer communities to design, build, and maintain secure & compassionate decentralized architectures & tools for responsible key management of digital assets & digital identity.
Blossom is a spec for a set of HTTP endpoints that allow users to store blobs of data on publicly accessible servers.
Decentralized mining pool for bitcoin. It is a short-lived Directed Acyclic Graph (DAG)-based layer-1 blockchain solely for the purpose of producing bitcoin blocks.
A mobile phone operating system built with "Privacy by Design". A project of The Calyx Institute https://calyxinstitute.org
Cashu is a Chaumian Ecash wallet and mint for Bitcoin Lightning.
A twitter-like nostr client for iPhone, iPad and MacOS.
An easy and performant way to use your own bitcoin node with a variety of wallets and tools. Electra is built into most dedicated full node implementations.
An open source protocol to custody and transact bitcoin in a community context, built on a strong foundation of privacy.
Flexible Round-Optimised Schnorr Threshold signatures
Bitcoin-native banking infrastructure that reduces the development burden for organizations seeking to use Bitcoin and Lightning at enterprise scale. Bitcoin Beach Wallet is built on the Galoy platform.
A minimal, privacy-focused, opinionated LN protocol implementation aimed to specifically power lite LN nodes which are mostly to be found on mobile phones or desktop computers and only run private channels.
Jam is a web interface for JoinMarket focusing on user-friendliness and ease-of-use. It aims to provide sensible defaults and be easy to use for beginners while still having the features advanced users expect.
A platform that makes it easy to integrate lightning in a wide variety of situations.
Telegram bot that allows people to trade using lightning network with other people on telegram, this is an open source project and anyone can create issues, submit a PR, fork it, modify it or create their own bot with the code.
A direct view on the current state of the bitcoin network that can be easily used with your own node.
NO-KYC P2P Lightning exchange on top of nostr
A way for applications like Nostr clients to access a remote Lightning wallet through a standardized protocol.
An open source nostr client on android.
Scale Bitcoin, save fees, and preserve privacy all at once
A bitcoin full node implementation that makes it easy to use lightning and joinmarket.
RoboSats is a simple and private way to exchange bitcoin for national currencies. Robosats simplifies the peer-to-peer user experience and uses lightning hold invoices to minimize custody and trust requirements.
A bitcoin full node implementation that supports electrum and easy samourai wallet integration via QR code and Tor.
Snort is a nostr UI built with React aiming for speed and efficiency.
End to end encrypted chat with no central server using the bitcoin lightning network.
Open source Linux distribution optimized for running a personal server.
We’re building the next generation of the decentralized web – returning data back to users.
Lightning Node Manager
A mobile app giving our users a simple, inclusive, secure and private way to buy and sell BTC as it was intended: peer-to-peer.
A rust implementation of a variant of atomic-swap protocol, using HTLCs on Bitcoin.
A powerful yet easy to run 24/7 bitcoin node.
A hardware wallet with a screen and camera that you can build yourself for ~$50. If you want a larger screen and smart card support you can build a Specter-DIY for ~$250.
A second-layer protocol for making cheap, anonymous, off-chain Bitcoin payments.
A Zero-Trust Solution Offensive Cybersecurity that Transcends Encoded Logic Defenses.
Smarter Bitcoin Contracts
A free, open-source community resource for designers, developers and others working on non-custodial bitcoin products.
A library that allows you to seamlessly build cross-platform Bitcoin wallets without worrying about bitcoin internals.
One of the major lightning implementations that leverages plugins to give you additional features and control.
A decentralized coinjoin implementation that provides users additional privacy through the construction of collaborative transactions without a centralized server.
A library that allows you to build a lightning node without worrying about implementing low-level lightning logic correctly. LDK is based on Rust-Lightning, a full-featured but also incredibly flexible lightning implementation, allowing you to decide how to use it.
The most popular lightning network implementation currently available.
A collection of Nix packages and NixOS modules for easily installing full-featured Bitcoin nodes with an emphasis on security
A nostr development kit that makes the experience of building Nostr-related applications, whether they are relays, clients, or anything in between.
Slashtags gives developers tools to build secure and scalable peer-to-peer applications that put users in control of their profiles, contacts, accounts, and data
Stratum V2 is the next generation protocol for pooled mining. It increases security, makes data transfers more efficient, and reduces mining infrastructure requirements.
VLS separates your Lightning private keys and security rule validation from your Lightning node, into a discrete signing device.
lightning-kmp is a Kotlin Multiplatform implementation of the Lightning Network optimised for mobile wallets. It can run on many platforms, including mobile devices.
A decentralized network based on cryptographic keypairs and that is not peer-to-peer, it is super simple and scalable and therefore has a chance of working.
The private and secure mobile operating system with Android app compatibility. Developed as a non-profit open source project.
A network focused on preventing surveillance and censorship that is often used by bitcoin projects.
1. Fill out the Typeform application below
2. Submit an issue to this repo and explain why you are excited to attend
3. Over the next 30 days, we will be reviewing submissions and sending out e-tickets
