feat: block propagation protocol with validation and dedup

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -e .[dev]
+
+      - name: Lint
+        run: make lint
+
+      - name: Run tests
+        run: make test

.gitignore

@@ -258,6 +258,17 @@ pythontex-files-*/
 # easy-todo
 *.lod
 
+# MiniChain local planning docs (do not commit)
+issues.md
+architectureProposal.md
+
+# Python caches and virtualenvs
+__pycache__/
+*.py[cod]
+.pytest_cache/
+.ruff_cache/
+.venv/
+
 # xcolor
 *.xcp
 
@@ -324,3 +335,6 @@ TSWLatexianTemp*
 # option is specified. Footnotes are the stored in a file with suffix Notes.bib.
 # Uncomment the next line to have this generated file ignored.
 #*Notes.bib
+
+
+docs/

Makefile

@@ -0,0 +1,21 @@
+PYTHON ?= python3
+
+.PHONY: install dev-install test lint format start-node
+
+install:
+	$(PYTHON) -m pip install .
+
+dev-install:
+	$(PYTHON) -m pip install -e .[dev]
+
+test:
+	$(PYTHON) -m pytest
+
+lint:
+	$(PYTHON) -m ruff check src tests
+
+format:
+	$(PYTHON) -m ruff format src tests
+
+start-node:
+	PYTHONPATH=src $(PYTHON) -m minichain --host 127.0.0.1 --port 7000

README.md

@@ -1,236 +1,71 @@
-<!-- Don't delete it -->
-<div name="readme-top"></div>
+# MiniChain
 
-<!-- Organization Logo -->
-<div align="center" style="display: flex; align-items: center; justify-content: center; gap: 16px;">
-  <img alt="Stability Nexus" src="public/stability.svg" width="175">
-  <img src="public/todo-project-logo.svg" width="175" />
-</div>
+MiniChain is a minimal, research-oriented blockchain implementation in Python. This repository currently contains the project scaffolding and development environment for the v0 core chain roadmap.
 
-&nbsp;
+## Current Status
 
-<!-- Organization Name -->
-<div align="center">
+Issue #1 (project scaffolding) is implemented with:
 
-[![Static Badge](https://img.shields.io/badge/Stability_Nexus-/TODO-228B22?style=for-the-badge&labelColor=FFC517)](https://TODO.stability.nexus/)
+- Python package layout under `src/minichain`
+- Placeholder component modules for:
+  - `crypto`, `transaction`, `block`, `state`, `mempool`, `consensus`, `network`, `storage`, `node`
+- `pyproject.toml` project configuration
+- `Makefile` for common developer tasks
+- Basic CI workflow (`.github/workflows/ci.yml`)
+- Baseline tests under `tests/`
 
-<!-- Correct deployed url to be added -->
+## Requirements
 
-</div>
+- Python 3.11+
 
-<!-- Organization/Project Social Handles -->
-<p align="center">
-<!-- Telegram -->
-<a href="https://t.me/StabilityNexus">
-<img src="https://img.shields.io/badge/Telegram-black?style=flat&logo=telegram&logoColor=white&logoSize=auto&color=24A1DE" alt="Telegram Badge"/></a>
-&nbsp;&nbsp;
-<!-- X (formerly Twitter) -->
-<a href="https://x.com/StabilityNexus">
-<img src="https://img.shields.io/twitter/follow/StabilityNexus" alt="X (formerly Twitter) Badge"/></a>
-&nbsp;&nbsp;
-<!-- Discord -->
-<a href="https://discord.gg/YzDKeEfWtS">
-<img src="https://img.shields.io/discord/995968619034984528?style=flat&logo=discord&logoColor=white&logoSize=auto&label=Discord&labelColor=5865F2&color=57F287" alt="Discord Badge"/></a>
-&nbsp;&nbsp;
-<!-- Medium -->
-<a href="https://news.stability.nexus/">
-  <img src="https://img.shields.io/badge/Medium-black?style=flat&logo=medium&logoColor=black&logoSize=auto&color=white" alt="Medium Badge"></a>
-&nbsp;&nbsp;
-<!-- LinkedIn -->
-<a href="https://linkedin.com/company/stability-nexus">
-  <img src="https://img.shields.io/badge/LinkedIn-black?style=flat&logo=LinkedIn&logoColor=white&logoSize=auto&color=0A66C2" alt="LinkedIn Badge"></a>
-&nbsp;&nbsp;
-<!-- Youtube -->
-<a href="https://www.youtube.com/@StabilityNexus">
-  <img src="https://img.shields.io/youtube/channel/subscribers/UCZOG4YhFQdlGaLugr_e5BKw?style=flat&logo=youtube&logoColor=white&logoSize=auto&labelColor=FF0000&color=FF0000" alt="Youtube Badge"></a>
-</p>
-
----
-
-<div align="center">
-<h1>MiniChain</h1>
-</div>
-
-MiniChain is a minimal fully functional blockchain implemented in Python.
-
-### Background and Motivation
-
-* Most well-known blockchains are now several years old and have accumulated a lot of technical debt.
-  Simply forking their codebases is not an optimal option for starting a new chain.
-
-* MiniChain will be focused on research. Its primary purpose is not to be yet another blockchain
-  trying to be the one blockchain to kill them all, but rather to serve as a clean codebase that can be a benchmark for research of
-  variations of the technology. (We hope that MiniChain will be as valuable for blockchain research as, for instance,
-  MiniSat was valuable for satisfiability and automated reasoning research. MiniSat had less than 600 lines of C++ code.)
-
-* MiniChain will be focused on education. By having a clean and small codebase, devs will be able to understand
-  blockchains by looking at the codebase.
-
-* The blockchain space is again going through a phase where many new blockchains are being launched.
-  Back in 2017 and 2018, such an expansion period led to many general frameworks for blockchains,
-  such as Scorex and various Hyperledger frameworks. But most of these frameworks suffered from speculative generality and
-  were bloated. They focused on extensibility and configurability. MiniChain has a different philosophy:
-  focus on minimality and, therefore, ease of modification.
-
-* Recent advances in networking and crypto libraries for Python make it possible to develop MiniChain in Python.
-  Given that Python is one of the easiest languages to learn and results in usually boilerplate-minimized and easy to read code,
-  implementing MiniChain in Python aligns with MiniChain's educational goal.
-
-
-### Overview of Tasks
-
-* Develop a fully functional minimal blockchain in Python, with all the expected components:
-  peer-to-peer networking, consensus, mempool, ledger, ...
-
-* Bonus task: add smart contracts to the blockchain. 
-
-Candidates are expected to refine these tasks in their GSoC proposals. 
-It is encouraged that you develop an initial prototype during the application phase.
-
-### Requirements
-
-* Use [PyNaCl](https://pynacl.readthedocs.io/en/latest/) library for hashing, signing transactions and verifying signatures.
-* Use [Py-libp2p](https://github.com/libp2p/py-libp2p/tree/main) for p2p networking.
-* Implement Proof-of-Work as the consensus protocol.
-* Use accounts (instead of UTxO) as the accounting model for the ledger.
-* Use as few lines of code as possible without compromising readability and understandability.
-* For the bonus task, make Python itself be the language used for smart contracts, but watch out for security concerns related to executing arbitrary code from untrusted sources.
-
-### Resources
-
-* Read this book:  https://www.marabu.dev/blockchain-foundations.pdf 
-
-
----
-
-## Project Maturity
-
-TODO: In the checklist below, mark the items that have been completed and delete items that are not applicable to the current project:
-
-* [ ] The project has a logo.
-* [ ] The project has a favicon.
-* [ ] The protocol:
-   - [ ] has been described and formally specified in a paper.
-   - [ ] has had its main properties mathematically proven.
-   - [ ] has been formally verified.
-* [ ] The smart contracts:
-   - [ ] were thoroughly reviewed by at least two knights of The Stable Order.
-   - [ ] were deployed to:
-      - [ ] Ergo
-      - [ ] Cardano
-      - [ ] EVM Chains:
-        - [ ] Ethereum Classic
-        - [ ] Ethereum
-        - [ ] Polygon
-        - [ ] BSC
-        - [ ] Base
-* [ ] The mobile app:
-   - [ ] has an _About_ page containing the Stability Nexus's logo and pointing to the social media accounts of the Stability Nexus.
-   - [ ] is available for download as a release in this repo.
-   - [ ] is available in the relevant app stores.
-* [ ] The web frontend:
-   - [ ] has proper title and metadata.
-   - [ ] has proper open graph metadata, to ensure that it is shown well when shared in social media (Discord, Telegram, Twitter, LinkedIn).
-   - [ ] has a footer, containing the Stability Nexus's logo and pointing to the social media accounts of the Stability Nexus.
-   - [ ] is fully static and client-side.
-   - [ ] is deployed to Github Pages via a Github Workflow.
-   - [ ] is accessible through the https://TODO:PROJECT-NAME.stability.nexus domain.
-* [ ] the project is listed in [https://stability.nexus/protocols](https://stability.nexus/protocols).
-
----
-
-## Tech Stack
-
-TODO:
-
-### Frontend
-
-TODO:
-
-- Next.js 14+ (React)
-- TypeScript
-- TailwindCSS
-- shadcn/ui
-
-### Blockchain
-
-TODO:
-
-- Wagmi
-- Solidity Smart Contracts
-- Ethers.js
-
----
-
-## Getting Started
-
-### Prerequisites
-
-TODO
-
-- Node.js 18+
-- npm/yarn/pnpm
-- MetaMask or any other web3 wallet browser extension
-
-### Installation
-
-TODO
-
-#### 1. Clone the Repository
+## Setup
 
 ```bash
-git clone https://github.com/StabilityNexus/TODO.git
-cd TODO
+python3 -m venv .venv
+source .venv/bin/activate
+python -m pip install --upgrade pip
+make dev-install
 ```
 
-#### 2. Install Dependencies
-
-Using your preferred package manager:
+If you also want networking dependencies:
 
 ```bash
-npm install
-# or
-yarn install
-# or
-pnpm install
+python -m pip install -e .[network]
 ```
 
-#### 3. Run the Development Server
-
-Start the app locally:
+## Common Commands
 
 ```bash
-npm run dev
-# or
-yarn dev
-# or
-pnpm dev
+make test        # run unit tests
+make lint        # run ruff checks
+make format      # format with ruff
+make start-node  # run scaffold node entrypoint
 ```
 
-#### 4. Open your Browser
-
-Navigate to [http://localhost:3000](http://localhost:3000) to see the application.
-
----
-
-## Contributing
-
-We welcome contributions of all kinds! To contribute:
-
-1. Fork the repository and create your feature branch (`git checkout -b feature/AmazingFeature`).
-2. Commit your changes (`git commit -m 'Add some AmazingFeature'`).
-3. Run the development workflow commands to ensure code quality:
-   - `npm run format:write`
-   - `npm run lint:fix`
-   - `npm run typecheck`
-4. Push your branch (`git push origin feature/AmazingFeature`).
-5. Open a Pull Request for review.
+## Run the Node Entrypoint
 
-If you encounter bugs, need help, or have feature requests:
-
-- Please open an issue in this repository providing detailed information.
-- Describe the problem clearly and include any relevant logs or screenshots.
-
-We appreciate your feedback and contributions!
+```bash
+PYTHONPATH=src python -m minichain --host 127.0.0.1 --port 7000
+```
 
-© 2025 The Stable Order.
+## Repository Layout
+
+```text
+.github/workflows/ci.yml
+src/minichain/
+  __init__.py
+  __main__.py
+  crypto.py
+  transaction.py
+  block.py
+  state.py
+  mempool.py
+  consensus.py
+  network.py
+  storage.py
+  node.py
+tests/
+  test_scaffold.py
+issues.md
+architectureProposal.md
+```