ShieldBit (SBT) — Quantum-Safe Cryptocurrency

Why ShieldBit

Built for the Post-Quantum Era

Ordinary payments, explicit ownership rules, and post-quantum spending signatures. Public testnet and independent security review are still ahead.

🔐

ML-DSA-65 Signatures

NIST FIPS 204 spending signatures designed to resist known classical and quantum attacks. Security still depends on implementation, review, and protecting wallet keys.

⛏️

Proof-of-Work Mining

Standalone double-SHA256 proof of work, capped issuance, and scheduled reward halvings. Bitcoin auxiliary merge mining is not implemented.

⚡

Ordinary Payments

Send SBT directly to another wallet through signed on-chain transfers. Ownership, amounts, fees, and mining-reward maturity are checked before funds move.

🔄

Fork Recovery

Validated accumulated-work selection and atomic UTXO rollback keep ordinary payments consistent through chain reorganizations. Equal-work forks retain the active tip.

👁️

Wallet Protection

Encrypted wallet keys, checked recovery against the original address, and owner-only local node submission. Payments are transparent, not anonymous.

🛡️

Validation Safeguards

Bounded decoding, amount checks, coinbase-height commitments, median-time-past rules, and 64-bit timestamps. Tests and review provide evidence, not immunity from bugs.

Under the Hood

Pure Python Reference Implementation

A clean, auditable codebase with zero obfuscation. Every cryptographic decision is documented and justified.

🔑
ML-DSA-65 (NIST FIPS 204) Post-quantum digital signatures via the cryptography library (≥50.0.2)
#️⃣
SHA3-256 + double-SHA256 SHA3 for all internal hashing, double-SHA256 for standalone proof of work
📦
Bech32m Addresses (sb1…) BIP-350 encoding with custom HRP, implemented from scratch
🗝️
Shamir Secret Sharing k-of-n recovery over GF(2^8) — built-in key backup without third parties
🌐
asyncio P2P Node Full compact block relay, GCS filters, and peer discovery
🔒
AES-256-GCM Keystore PBKDF2-encrypted wallet keys, never stored in plaintext

        # Install and create a wallet

        pip install -e .

        # Generate a new quantum-safe wallet

        shieldbit wallet create

        # → Address: sb1q7f3k2m...

        # Start ordinary CPU mining

        shieldbit mine --threads 4

        # Send SBT to any sb1 address

        shieldbit send sb1q... 1.5

        # Inspect network parameters

        shieldbit info

Roadmap

Where We Are

Honest, transparent progress tracking — no vaporware.

✅

Core Protocol DONE

Ordinary UTXO transfers, real ML-DSA-65 signing, fork recovery, encrypted wallets, compact filters, and a P2P node. Pre-release software; no mainnet or real-funds use.

✅

Automated Test Suite DONE

270 tests pass locally for the ordinary-payment scope, including repeated three-process private-testnet checks. GitHub Actions runs Python and dependency matrices.

✅

Domain & Infrastructure DONE

shieldbit.org registered on Cloudflare. Email routing active. CDN configured.

✅

Website & Whitepaper DONE

Website live on Cloudflare Pages. Whitepaper version 1.1 with the protocol design, implementation status, and path to launch.

⬜

Genesis Block & Seed Servers SOON

Mine the genesis block (no pre-mine). Deploy 3 seed servers on Hetzner VPS. Hardcode block hash in protocol.

⬜

Testnet Launch SOON

Public testnet with faucet. Community testing, security audit of crypto layer.

⬜

Mainnet Launch

Only after independent review, extended public testing, and approval of mainnet parameters and genesis. No launch date or exchange support is promised.

ShieldBit Post-Quantum Payments