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Welcome to Sovran

Sovran is a privacy-focused mobile Bitcoin wallet that brings the feel of physical cash to digital payments. Built on Cashu ecash protocol and powered by Nostr, Sovran enables instant Bitcoin transactions with near-zero fees while maintaining your privacy and sovereignty. Sovran Wallet

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What is Sovran?

Sovran combines cutting-edge Bitcoin technologies to create a seamless payment experience:
  • Cashu Ecash: Send and receive Bitcoin instantly with blind signatures that protect your privacy
  • Lightning Network: Lightning invoices and payments with BOLT11 support
  • Nostr Integration: Decentralized messaging, contacts, and social features via Nostr protocol
  • NFC Payments: Tap-to-pay functionality for contactless Bitcoin transactions
  • Multi-Mint Support: Distribute your balance across multiple Cashu mints for security

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Core Features

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Bitcoin That Feels Like Cash

Ecash bearer tokens live on your device like digital cash. Send and receive instantly with near-zero fees. Blind signatures mean mints can’t link your transactions.

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Powered by Nostr

Built on Nostr, a decentralized network that can’t be shut down or censored. Your identity is derived from your seed using NIP-06, giving you a portable social identity tied to your wallet.

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Privacy by Design

  • BIP-39 seed phrase generation and secure storage
  • NIP-06 deterministic key derivation for Nostr identity
  • Encrypted local storage via expo-secure-store
  • No data collection — fully open source

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Multi-Mint Architecture

Choose mints you trust and spread your balance across many for redundancy. Every mint shows its KYM (Know Your Mint) score with audit data from the Cashu Auditor.

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Get Started

Quick Start

Get up and running with Sovran in minutes

Installation

Download and install Sovran on iOS or Android

Key Features

Explore what makes Sovran unique

Security

Learn about Sovran’s security model

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Protocol Support

Sovran implements industry-standard Bitcoin and Nostr protocols: Cashu NUTs: NUT-00 through NUT-13, NUT-17 (payment requests), NUT-18, NUT-23 Lightning Network: BOLT11 invoices for sending and receiving Nostr NIPs: NIP-04, NIP-05, NIP-06, NIP-17 (gift-wrapped DMs), NIP-19, NIP-44, NIP-59 Bitcoin Standards: BIP-39 and BIP-32 for hierarchical deterministic wallets

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Technical Architecture

// Tech Stack
{
  "frontend": "React Native + Expo",
  "styling": "Tailwind CSS via Uniwind",
  "state": "Zustand (migrating from Redux)",
  "routing": "Expo Router (file-based)",
  "cashu": "coco-cashu-core/react/expo-sqlite",
  "nostr": "NDK for decentralized communication",
  "animations": "Reanimated with hero transitions"
}

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Why Sovran?

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Instant Payments

Send and receive Bitcoin instantly without waiting for Lightning channel management or blockchain confirmations. Ecash tokens settle immediately.

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Near-Zero Fees

Cashu ecash eliminates the routing fees and minimum payment amounts common with Lightning, making micropayments practical.

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Enhanced Privacy

Blind signatures ensure mints cannot link your sending and receiving transactions. Multi-mint distribution further protects your privacy.

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Open Source

Fully open source and transparent. No venture capital, no data collection, no tracking.

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Community & Support

Sovran is privacy-first, non-custodial software. You control your keys and your funds. Always backup your seed phrase securely.

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