Enshrined Functionality Framework for a Custom Layer 1 Protocol

1. Vision and Goals

The objective of this custom enshrined functionality framework is to embed native Layer 2 (L2) support into a Layer 1 (L1) blockchain protocol, enabling scalability, security, and interoperability. By designing the framework with modularity and flexibility, we aim to standardize rollup operations, optimize performance, and reduce costs for developers and users.

Real-World Applications

1. Decentralized Finance (DeFi): Enable high-throughput, low-cost transactions for platforms like decentralized exchanges, lending protocols, and automated market makers.
2. Gaming and NFTs: Support seamless, low-latency interactions in blockchain-based gaming, including in-game assets and non-fungible token (NFT) marketplaces.
3. Cross-Border Payments: Facilitate scalable, trustless, and affordable international payment systems with fast settlement times.
4. Supply Chain Management: Provide transparency and efficiency for tracking goods, ensuring real-time updates and cost-efficient operations across global supply chains.
5. Identity and Credential Verification: Create interoperable, secure systems for managing digital identities and credentials without exposing private information.

Key Goals

1. Native Scalability: Optimize data availability, transaction processing, and proof verification.
2. Enhanced Security: Ensure rollups inherit robust security guarantees from the L1.
3. Interoperability: Facilitate seamless communication between L1 and L2, and across multiple L2s.
4. Cost Efficiency: Minimize operational expenses, especially for data storage and execution.
5. Developer Accessibility: Provide standardized APIs, tooling, and resources for simplified development.

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2. High-Level Architecture

graph TD
    L1[Layer 1 Protocol] -->|Data Storage| DAL[Data Availability Layer]
    L1 -->|Proof Verification| PVS[Proof Verification System]
    L1 -->|Transaction Ordering| DSF[Decentralized Sequencer Framework]
    L1 -->|Cross-Rollup Communication| CRC[Cross-Rollup Composability]
    L1 -->|Governance| GOV[Governance Module]

    subgraph "Layer 2 Rollups"
        R1[Rollup A]
        R2[Rollup B]
        R3[Rollup C]
    end

    R1 -->|Submit Transactions| DAL
    R2 -->|Submit Proofs| PVS
    R3 -->|Request State| CRC
    CRC -->|State Updates| R1 & R2 & R3
    GOV -->|Upgrade Proposals| L1

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A. Core Components

1. Data Availability Layer: Provides scalable storage and ensures data availability using sampling-based mechanisms.
2. Proof Verification System: Verifies zk-SNARK, zk-STARK, and fraud proofs for rollup state transitions.
3. Decentralized Sequencer Framework: Enables fair and decentralized transaction ordering.
4. Cross-Rollup Composability: Facilitates trustless interactions between rollups and L1.
5. Governance Module: Supports decentralized decision-making for protocol upgrades.

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6. Project Structure

root/
├── cmd/                     # Entry points for applications (e.g., CLI, server)
│   ├── server/
│   │   └── main.go          # Main entry point for the Layer 1 node
│   ├── sequencer/
│   │   └── main.go          # Entry point for the shared sequencer module
│   └── verifier/
│       └── main.go          # Entry point for proof verification components
├── internal/                # Core internal libraries and modules
│   ├── data_availability/   # Implements data blob storage and sampling logic
│   │   ├── availability.go
│   │   └── sampling.go
│   ├── proofs/              # Proof verification logic (e.g., zk-SNARKs, zk-STARKs)
│   │   ├── snark.go
│   │   └── stark.go
│   ├── governance/          # Governance and upgrade mechanisms
│   │   ├── voting.go
│   │   └── proposal.go
│   ├── rollup_registry/     # Manages rollup state trees and interactions
│   │   ├── registry.go
│   │   └── state_tree.go
│   ├── messaging/           # Synchronous messaging and cross-rollup communication
│   │   ├── message_router.go
│   │   └── sync.go
│   └── utils/               # Utility functions and shared logic
│       ├── logger.go
│       ├── metrics.go
│       └── crypto.go
├── pkg/                     # Public reusable packages
│   ├── api/                 # API definitions and handlers
│   │   ├── data_api.go
│   │   ├── proof_api.go
│   │   └── sequencer_api.go
│   ├── client/              # SDKs or client libraries for interacting with the protocol
│   │   ├── data_client.go
│   │   └── proof_client.go
│   └── contracts/           # Smart contract ABIs and deployment scripts
│       ├── sequencer_registry.sol
│       ├── state_tree.sol
│       └── governance.sol
├── scripts/                 # Deployment, testing, and automation scripts
│   ├── deploy.sh
│   ├── test.sh
│   └── migrate.sh
├── test/                    # Integration and end-to-end tests
│   ├── data_availability_test.go
│   ├── proofs_test.go
│   └── messaging_test.go
├── config/                  # Configuration files
│   ├── config.yaml
│   └── secrets.yaml
├── docs/                    # Documentation for developers and users
│   ├── api_reference.md
│   ├── architecture.md
│   └── setup_guide.md
├── Dockerfile               # Docker configuration for containerized deployment
├── docker-compose.yml       # Docker Compose setup for local development
├── Makefile                 # Build and management commands
└── README.md                # Overview of the project

This document outlines the comprehensive design for a scalable rollup framework integrated into a Layer 1 blockchain protocol.