# PART 4: StackChain™ Sovereign Git Engine & 3-Layer Stacked Receipts

## 4.1 Transforming Code into Sovereign Property
StackChain decouples software development from centralized cloud platforms. In StackChain:
- Git repositories are hosted natively on bare-metal storage pools.
- Every commit hash and tree is indexed permanently into Layer 1 consensus.
- In-memory raw object streaming (`/api/raw`) delivers sub-15ms file inspection and tree navigation.

## 4.2 The 3-Layer Stacked Receipt System (in DIPs)
Every Developer Invention Proposal (DIP) and 24-hour development sprint culminates in 3 verifiable cryptographic receipts:

1. **Layer 1: Finished Engineering Receipts**:
   - Cryptographic commit diffs, automated test run outputs, compiler logs, and SHA-256 code hashes proving working software was delivered.
2. **Layer 2: Title & Provenance Receipts**:
   - On-chain proof of ownership and payment settlement hashes (USDC via dripWallets) immutably linking the code to the contributing authors.
3. **Layer 3: Cumulative Revenue Receipts**:
   - Real-world usage toll receipts and non-dilutive dividend distributions generated when other developers or applications call the library.

## 4.3 rDAO Governance & Shared Libraries
Protocol libraries are shared, versioned, and ratified directly by the rDAO (reputation Decentralized Autonomous Organization), ensuring transparent peer-review and democratic protocol upgrades.