Challenges May 2020

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How to participate

If you like to get a better overview of the challenges, join the kickoff livestream. You may also join later on.

Most projects listed their challenges as sprint issues on Github with the lable "hackathon". Simply comment on those that you are interested in and the project mentors should get back to you.

To participate please register on our Mattermost (OpenSource Slack) and check if there is already a chat room regarding the project you are interested. In the channel "Lightning HackSprint" should always be someone around to point you into the right direction if you have any further questions.

Projects with Challenges

This is the list of Lightning Network related projects that registered for the HackSprint so far:

RaspiBlitz

Github issues with label "hackathon": github.com/rootzoll/raspiblitz

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/raspiblitz

LightningATM

Github issues with label "hackathon": github.com/21isenough/LightningATM

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-lightningatm

LNbits

https://github.com/arcbtc/lnbits

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-lnbits

In a push to get lnbits new update out and extend its functionality, x3 0.03btc bounties are available for anyone developing extensions. If you're interested in making an extension, pop into the stream for a chat. If the community likes the idea, you can make it and on completion get one of the bounties!

RTL (Ride The Lightning)

https://github.com/Ride-The-Lightning/RTL

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-rtl-ride-the-lightning

Quickening - Room77 Point of Sale

Github issues starting with "Room77" https://github.com/arcbtc/M5StackSats/issues

Please work on the branch"payment_connector" use the version in the folder "TheQuickening"

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-pos-room77-quickening

Lightnite

Challenges: https://issues.lightnite.io

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-lightnite-game

Specter-Desktop

Quickinfo on Specter: https://twitter.com/CryptoAdvance/status/1233833767283941376?s=20

Challenge: https://github.com/rootzoll/raspiblitz/issues/1059#issuecomment-605526623

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-specter-desktop

TOR2IP-Tunnelservice

A service to give a Lightning node running behind TOR a port on a public IP address.

Subpage with Challenge: TOR2IP-Tunnelservice

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-tor2ip-tunnelservice

SendMany App

Project Info: https://github.com/fusion44/sendmany

Challenge: https://github.com/rootzoll/raspiblitz/issues/1000#issuecomment-605526180

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-keysendsendmany

Wiki Lightning Spam Protection

Turn this prototype https://github.com/thorie7912/LightningPayment to add a Lightning SpamProtection into a Media Wiki Extension thats easy to install and config on a standard Media Wiki.

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/media-wiki-spam-protection

The Eye of Satoshi (python-teos)

The Eye of Satoshi is a Lightning watchtower compliant with BOLT13, written in Python 3.

Github issues with label "hackathon": github.com/talaia-labs/python-teos

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-the-eye-of-satoshi

Exchange Union/OpenDEX

Integrate c-lightning as swap client (and more): https://github.com/ExchangeUnion/xud/issues?q=is%3Aopen+is%3Aissue+label%3Ahackathon

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-opendex

getroutevia: a c-lightning plugin for route search with restrictions

Find routes that satisfy additional criteria, for instance, must [not] go through certain nodes. More info and discussion here: https://github.com/s-tikhomirov/getroutevia/issues/1

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-getroutevia-c-lightning-plugin

Rust Lightning network node

Another LN node? Why we need it?

The problem with the existing Lightning node implementations is their very limited extensibility for such things as:

  • future LN upgrades (channel factories, pay-to-ec-point, taproot),
  • protocols on top of LN (layer 3), like DLCs on LN or proposed Lightspeed payments, which require modification on the structure of the commitment transaction.

We will try to build a node that is highly modular and is ready for the future LN extensions. More information here: https://github.com/LNP-BP/lnpd

During the hackathon we will try to:

  • compose core architecture with non-blocking multithreading
  • add lightning network wire protocol
  • implement BOLT-9 (using rust-lightning it should be simple)
  • implement BOLT-1: do connection to other LN nodes + send/receive `connect`, `ping` & `ping` messages
  • (optionally) implement gossip protocol

Contact User:Dr-Orlovsky for details

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-rust-ln-node

Weenode

This is the new name for the cheapnode project: Building the cheapest possible bitcoin fullnode (+lightning and other services) on old Android phones.

Help wanted on Github issues with label "hacksprint"

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-weenode

Backup plugin for c-lightning

Backups are a major issue in the Lightning Protocol, given that any sort of dataloss could potentially result in loss of funds. This means that restoring an old backup of the database could result in the node broadcasting an old state, which is a cheat attempt in the protocol, which is punished.

The backup c-lightning plugin (https://github.com/lightningd/plugins/pull/97) implements the basic mechanisms to create a synchronous backup of any change to the database, and ensures that the backup stays in sync with the database. It does so in a generic way allowing to write backups to a variety of backends, but initially only implements a file-system based backup backend that is located on the same machine, but on a separate disk. Doing so already provides protection against data corruption on the primary disk. Potential future improvements could include:

  • Backup to Google services. Examples include:
    • GDrive
    • Google Docs - Sheets
    • Google Cloud Storage
  • Backup to Dropbox
  • Send backup data to a peer using the custommsg hook
  • Backups to a dedicated backup server

In the case of a dedicated backup server the plugin could also manage a subscription that is used to pay for the backup service.

User:cdecker is available for additional information and mentorship. See his Wiki page for contact information.

Chatroom to get started: https://mm.fulmo.org/fulmo/channels/x-backup-plugin-c-lightning

Adding your Project

Feel free to add a challenge yourself! The wiki is open to any Bolter (you'll figure out how to edit). If you have a GitHub Repo best practice is to put the label "hackathon" (yellow) next to issues you like people to join/help for the weekend. If you added a challenge please also get in touch on Mattermost for more information and collaboration.

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