jeezman / flash

fork of galoy bitcoin banking infrastructure

Galoy

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TLDR

Galoy is an opinionated bitcoin banking platform.

This repo represents the main api that brings all functionality together. Take a look at the Quickstart if you want to take it for a spin.

Responsible disclosure

Found critical bugs/vulnerabilities? Please email them [email protected] Thanks!

Get Started

Want to try it out and contribute? Checkout the dev documentation to deploy locally with a docker compose script.

If you have questions, you can join our Workspace

For an overview of all relevant repository checkout awesome-galoy.

Galoy-Backend features

• GraphqlAPI:
  • Public API following industry best practices
  • For end clients. Documentation
  • For admin activities
• Authentication:
  • Code is sent via twillio to end users phone number which can be exchanged for jwt auth token
  • OAuth integration (in progress)
  • Account scoped API keys (in progress)
• Internal ledger:
  • Records all account activity via double entry accounting
  • Support for integrating fiat currencies (in progress)
  • CSV based export of all accounting data
• Contact list for frequent transaction partners
• Price
  • Sub-second price data polled from largest exchanges to record USD value at settlement
  • Historical price data can be queried for display for different time frames
• Send / Receive BTC payments
  • External settlement via OnChain or lightning
  • Automatic internal settlement when payer & payee are on the same galoy instance
  • Fees can be applied for sending / receiving for all settlement methods
  • Support for tipping via dedicated web-frontend
  • Include memo to payment
• Lightning Network
  • Support for clearnet and TOR
  • Support for invoices with and without specified amount
  • Route probing to pre-display an accurate fee and mitigate attacks based on expensive routing
  • Channel data backup to dropbox and google cloud storage
• Custodial storage of all user assets
  • Limited funds stored in hot-wallet (keys kept on servers)
  • Threshold based rebalancing to cold-storage (keys stored on offline hardware devices)
• Security:
  • Velocity check based on user verification level
  • Spam protection for sharing memos
  • Configurable 2fa for payments (in progress)
  • DDos prevention
    • via rate limiting infront of critical APIs
    • via geetest CAPTCHA
• Resilience
  • Databases (mongodb and redis) are run by default in high availability/resilience mode. If one pod/node goes down, there is an automatic failover on another pod/node.
• Production ready
  • Supports horizontal scaling and highly available deployments via k8s
  • Client side load balancing across multiple LND nodes
  • Out-of-the-box dashboards for KPIs deployed to grafana showing metrics exported via prometheus
  • Quick response times thanks to pagination of large data sets
  • Returning error codes for full translation capability of the frontend
  • Instrumentation enabled for real-time insights into production runtime (opentelemetry / honeycomb)
• User on-boarding (optional)
  • Gamification via user quiz that pays out sats
  • Map of in-network merchants
• Notifications
  • Mobile clients can receive notifications of balance changes in real-time
  • Daily notification of balance for active end users

Tech Stack

• GCP, Kubernetes, Terraform, Helm, Concourse, Docker
• Opentelemetry, Prometheus
• Bitcoind, LND, Specter, RideTheLightning, Loop, Lndmon, Pool
• PostgreSQL, MongoDB, Redis
• NodeJS
• Typescript
• GraphQL
• React + React Native