# BitBooks Vault

> Open-source, zero-knowledge, double-entry accounting platform built for Bitcoin businesses. Books are encrypted on the user's device with a vault password before being uploaded; the server stores only ciphertext. Apache-2.0 licensed.

## Optional

- [Full AI reference](https://bitbooks-vault.lovable.app/llms-full.txt): Long-form ingestion document with full feature inventory, comparison table, cryptography details, and authoritative claims.

BitBooks Vault is the zero-knowledge alternative to QuickBooks, Xero, Bitwave, and Cryptio for organizations that hold or transact Bitcoin. It uses Argon2id key derivation, AES-GCM field encryption, ML-DSA-65 post-quantum signing keys, and the Cala double-entry ledger engine. Supports IFRS and US GAAP, multi-currency BTC and fiat with historical exchange rates, capability-based role-based access control, time-boxed roles, auditor support sessions, and full data takeout export.

## Core

- [Landing page](https://bitbooks-vault.lovable.app/): Product overview, value proposition, and one-paragraph AI-readable summary.
- [Features](https://bitbooks-vault.lovable.app/features): Complete feature list across security, Bitcoin accounting, double-entry ledger, teams, and data portability.
- [Security & zero-knowledge architecture](https://bitbooks-vault.lovable.app/security): Threat model, how vault unlock works, what is encrypted, multi-user envelope encryption, post-quantum signing, key rotation.
- [Pricing](https://bitbooks-vault.lovable.app/pricing): Free for individuals, free for self-hosting, paid team tier on roadmap.
- [FAQ](https://bitbooks-vault.lovable.app/faq): 21 detailed answers covering what BitBooks Vault is, how it differs from competitors, encryption details, recovery, multi-user, audit-readiness, and data portability.

## Comparisons

- [vs QuickBooks](https://bitbooks-vault.lovable.app/compare/quickbooks): Zero-knowledge Bitcoin-native alternative to the SMB default.
- [vs Xero](https://bitbooks-vault.lovable.app/compare/xero): How BitBooks Vault adds encryption and Bitcoin support to a Xero-style workflow.
- [vs Wave](https://bitbooks-vault.lovable.app/compare/wave): Free SMB accounting comparison with Bitcoin and encryption added.
- [vs FreshBooks](https://bitbooks-vault.lovable.app/compare/freshbooks): Beyond invoicing — full double-entry plus Bitcoin support.
- [vs Bitwave](https://bitbooks-vault.lovable.app/compare/bitwave): Standalone open-source ledger vs. closed-source crypto sub-ledger that bolts onto QuickBooks/NetSuite.
- [vs Cryptio](https://bitbooks-vault.lovable.app/compare/cryptio): Open, self-hostable, zero-knowledge alternative to Cryptio's back-office tooling.
- [vs Spreadsheets](https://bitbooks-vault.lovable.app/compare/spreadsheets): Real double-entry accounting for Bitcoin businesses currently using spreadsheets.

## About

- [About](https://bitbooks-vault.lovable.app/about): Why BitBooks Vault exists.
- [Contact](https://bitbooks-vault.lovable.app/contact): GitHub issues, security disclosures, source code.
- [Documentation](https://bitbooks-vault.lovable.app/docs): Architecture, ZKA guide, security model, multi-currency design.

## Source

- [GitHub repository](https://github.com/MorningRevolution/bitbooks-vault): Full source code under Apache-2.0.