Quantachain Testnet Alpha V2.0.1

[XD637]

QuantaChain Testnet — V2 Release (v2.0.1)

Post-quantum secure blockchain using Falcon-512 signatures and Asynchronous Byzantine Fault Tolerance (AlephBFT).

v2.0.1 — TESTNET UPDATE (2026-07-02)
Minor update and performance improvements on top of the V2 Hard Fork.
Genesis hash remains: ae37fe2f40a7e7dbe6d2d1337f260d57185ef5fb169008e2600f245809fd1fbf

This is a pre-release testnet build. Do not use real funds. APIs and chain parameters may change between alpha releases.

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What Changed in v2.0.1

• Hard Fork (Network Magic Bump) — Network magic bytes bumped to Q2T6 to isolate v2.0.1 nodes due to breaking block size and consensus changes.
• Smart Contracts V3 — Full AI contract layer with 5 native templates (Escrow, AgentJob, AgentBid, Stream, AgentRegistry).
• Staking & Slashing — Full validator staking, slashing, and unbonding logic. Open validator registration.
• Performance Fixes — Block size increased to 4MB, TPS ceiling ~400. Round-robin proposer timeout removed to guarantee 6s blocks.
• Validator Setup — Added setup-validator.sh script for secure, verifiable deployment.
• HD Wallet Key Derivation — Deterministic Falcon-512 keypair derivation from account seed.
• Block timing fixed (v2.0.0) — Blocks were slowing from 6s to 1–2h due to timestamp drift.
• Genesis Reset (v2.0.0) — Replaced lost validator wallet, rotated faucet wallets, new genesis hash.

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🚨 V2 Hard Fork Details 🚨

• Consensus Engine: Migrated from SHA3-256 Proof of Work to AlephBFT (Asynchronous Byzantine Fault Tolerance).
• Network Isolation: Updated network magic bytes to Q2T4 to prevent old nodes from connecting to the new consensus network.
• Block Time: Exact 6-second deterministic slots (previously ~30s random).
• Mining Removed: All start_mining commands and the quanta-miner binary have been removed.
• AI Agent Support: Added headless QUANTA_WALLET_PASSWORD environment variable support for automated AI escrow workflows.
• HD Wallets: The CLI wallet has been completely rewritten to support deterministic hierarchical generation natively.
• Persistent Crash Recovery: AlephBFT DAG state is now persisted to disk (alephbft_backup.dat), allowing seamless recovery and network rejoin after node restarts.

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Genesis Block

Parameter	Value
Network	Testnet (QUA7)
Timestamp	1780704001 (2026-06-06 00:00:01 UTC)
Testnet Genesis Hash	ae37fe2f40a7e7dbe6d2d1337f260d57185ef5fb169008e2600f245809fd1fbf
Faucet 0 (API sender)	0xec4f49553e31f22b27a83036a044aff7d697f524
Block Time	Exactly 6 seconds
TPS Limit	~250 - 300 TPS (assuming 2MB block limit)

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🔄 Clean Start Guide (Wipe Data & Resync from Genesis)

You MUST perform a clean start to join the V2 Testnet!
The V2 BFT consensus engine uses a different block structure and state machine. It will crash if it reads old V1 PoW blocks.

Bare Metal / VPS (no Docker)

pkill -f "quanta start"    # stop the old node
rm -rf ./quanta_testnet_data  # WIPE THE OLD POW CHAIN DATA!
cargo build --release      # compile the new V2 binary
./target/release/quanta start -c quanta.toml

Docker Validators (Safe Wipe)

If you are an existing validator using Docker, you must wipe the old chain data but KEEP your validator wallet file. Since you may have named your wallet file something other than validator.qua, you must be extremely careful.

Caution

If you run the rm -rf command below without successfully moving your wallet out first, you will delete your validator wallet forever!

Step 1: Stop your node and move your wallet out of the data folder. (Replace validator.qua with your actual wallet filename if it is different!)

docker stop quanta-validator
mv ~/quanta_data_v2/validator.qua ~/validator.qua.backup

Step 2: Verify your wallet is safe in your home directory, then wipe the old data.

ls ~/validator.qua.backup     # Verify it exists!
sudo rm -rf ~/quanta_data_v2/*

Step 3: Move your wallet back in (again, replacing validator.qua with your actual filename if different), and restart the node.

mv ~/validator.qua.backup ~/quanta_data_v2/validator.qua
docker start quanta-validator

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Validator Setup (Docker)

⚠️ ATTENTION: This is currently a strictly permissioned testnet designed only for testing. Only the validators explicitly hardcoded in the Genesis set can run a node and produce blocks.
Once the network matures, we will implement full DPoS, allowing anyone to stake and participate in consensus. Until then, if you would like early access to participate, please email: contact@quantachain.org

If you have been selected as a validator, follow these exact instructions to spin up your validator node and connect to the core network using Docker:

1. Create a Wallet and Get Your Key
You must generate a raw wallet and provide the public key to the core team to be whitelisted in the Genesis block.

docker run --rm -it xd637/quanta-node:latest quanta-wallet new-raw --file /tmp/validator.qua

2. Directory Setup
Create the directory where your blockchain data will live. We recommend adding _v2 to avoid mixing it with any old testnet data:

mkdir -p ~/quanta_data_v2

3. Place Your Wallet File
Move your validator wallet file (e.g., validator.qua or whatever you named it) directly into the ~/quanta_data_v2 directory you just created.

Your folder should look exactly like this:

~/quanta_data_v2/
└── validator.qua

(Note: You do NOT need the genesis.json or quanta.toml files! The latest network configuration is securely baked directly into the V2 Docker image.)

4. Pull the Latest Image & Start the Node
Run the following Docker commands to pull the latest V2 build, launch your node, connect to the Bootstrap node, and begin proposing blocks.

Important

Before running the second command below, you MUST change two things:

1. Change "YOUR_PASSWORD_HERE" to your actual wallet password.
2. Change validator.qua at the very end of the command to match the exact name of your wallet file.

docker pull xd637/quanta-node:latest

docker run -d \
  --name quanta-validator \
  --restart always \
  --network host \
  -v ~/quanta_data_v2:/home/quanta/quanta_data \
  -e QUANTA_WALLET_PASSWORD="YOUR_PASSWORD_HERE" \
  xd637/quanta-node:latest \
  quanta start --validator-wallet /home/quanta/quanta_data/validator.qua --bootstrap 79.137.78.1:8333

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Wallet Management

# New HD Wallet (Recommended)
quanta-wallet new --file my_wallet.json

# New Raw Wallet
quanta-wallet new-raw --file my_raw.qua

# AI Headless Mode (Set env var to skip password prompts)
export QUANTA_WALLET_PASSWORD="your_password"
quanta-wallet info --file my_wallet.json

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Ports

Port	Service
3000	REST API
8333	P2P Network
7782	RPC
9090	Prometheus Metrics

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License

QUANTACHAIN operates under an Open-Core Dual License model:

Component	License
Core Protocol	GNU AGPLv3
Native Templates & APIs	QuantaLabs Commercial License

For commercial licensing: contact@quantachain.org

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This discussion was created from the release Quantachain Testnet Alpha V2.0.1.