PLC Bundle

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⚠️ Preview Version - Do Not Use in Production!

plcbundle archives AT Protocol's DID PLC Directory operations into immutable, cryptographically-chained bundles of 10,000 operations. Each bundle is hashed (SHA-256), compressed (zstd), and linked to the previous bundle, creating a verifiable chain of DID operations.

• 📄 Technical Specification
• 📚 Library Documentation
• 💻 CLI Guide
• 📰 Announcement Article

What is plcbundle?

plcbundle is a format specification for archiving PLC directory operations:

• Bundling: Groups 10,000 operations into compressed, immutable files
• Chaining: Each bundle is cryptographically linked to the previous one
• Verifiable: SHA-256 hashes ensure data integrity throughout the chain
• Efficient: Zstandard compression with ~5x compression ratios

Implementations

• Go (this repository) - Full-featured CLI tool, library, and HTTP server
• TypeScript, Python, Ruby - Reference implementations

---

This Implementation (Go)

This Go implementation provides:

• 📚 Library - Embed bundle operations in your Go applications
• 💻 CLI Tool - Command-line interface for all operations
• 🌐 HTTP Server - Host and serve bundles over HTTP
• 🔄 Auto-sync - Automatically fetch and bundle new operations
• 🔌 WebSocket - Stream operations in real-time
• 🔍 Spam Detection - Built-in and custom JavaScript detectors
• ⚡ Performance - Parallel processing, efficient compression
• 🐳 Docker - Ready-to-deploy containers

Installation

Go Install

# CLI tool
go install tangled.org/atscan.net/plcbundle/cmd/plcbundle@latest

# Library
go get tangled.org/atscan.net/plcbundle

Docker

# Pull pre-built image
docker pull atscan/plcbundle:latest

# Run CLI
docker run --rm -v $(pwd)/data:/data atscan/plcbundle info

# Run as server
docker run -d -p 8080:8080 -v $(pwd)/data:/data atscan/plcbundle serve --host 0.0.0.0

# Or use docker compose
curl -O https://tangled.org/@atscan.net/plcbundle/raw/main/docker-compose.yaml
docker compose up -d

From Source

git clone https://tangled.org/@atscan.net/plcbundle
cd plcbundle
make build
sudo make install

Quick Start

As a Library

import plcbundle "tangled.org/atscan.net/plcbundle"

mgr, _ := plcbundle.New("./plc_data", "https://plc.directory")
defer mgr.Close()

bundle, _ := mgr.FetchNext(context.Background())
// Process bundle.Operations

See full library documentation →

As a CLI Tool

# Fetch bundles from plc.directory
plcbundle sync

# Clone from remote
plcbundle clone https://plc.example.com

# Verify integrity
plcbundle verify

See full CLI reference →

With Docker

# CLI usage
docker run --rm -v $(pwd)/data:/data plcbundle info

# Server mode
docker-compose up -d
curl http://localhost:8080/

Use Cases

• Archiving: Create verifiable backups of PLC operations
• Mirroring: Host your own PLC directory mirror
• Research: Analyze historical DID operations
• Compliance: Maintain tamper-evident audit trails

Security Model

Bundles are cryptographically chained but require external verification:

• ✅ Verify against original PLC directory
• ✅ Compare with multiple independent mirrors
• ✅ Check published root and head hashes
• ✅ Anyone can reproduce bundles from PLC directory

Documentation

• Library Guide - Comprehensive API documentation
• CLI Guide - Command-line tool usage
• Specification - Technical format specification

License

MIT

Contributing

Contributions welcome! Please open an issue or PR.