BQ Ledger
Built natively with Post-Quantum Cryptography. Not a fork. Not a wrapper. Quantum-resistant from consensus to key generation.
Legacy blockchains can't be retrofitted.
Bolting PQC onto existing chains introduces fragile migration paths, backward-compatibility debt, and signature ambiguity. We started from zero.
Ethereum
Legacy chainEIP-8141 delayed March 2026. PQC migration deemed "extremely complex". 2.1-6.7M BTC on vulnerable addresses. Retrofitting quantum resistance means breaking backward compatibility or accepting years of transition risk.
BQ Ledger
PQC-nativeNatively PQC. Every key, signature, and inter-node communication is quantum-resistant from day one. No migration. No transition period. No backward-compatibility compromises.
Cryptographic stack
Every layer uses NIST-standardized post-quantum algorithms. No classical fallbacks in the critical path.
The gap everyone ignores.
The industry is racing to adopt PQC encryption (ML-KEM) for key exchange and data protection. That solves half the problem.
What most chains ignore is PQC signatures (ML-DSA). Every transaction, every block validation, every node attestation depends on digital signatures. If signatures are quantum-vulnerable, the entire chain is compromised -- regardless of encryption.
BQ Ledger uses ML-DSA natively for all signatures and ML-KEM for all key encapsulation. Both layers are quantum-resistant. This is the differentiator.
Both layers. Native. No compromise.
Built for the post-quantum era
Every feature designed from scratch for quantum resistance. No legacy baggage.
Lightweight PoW
CPU-only proof of work. No GPU farms, no energy waste. Accessible mining for any hardware.
PQC-native key generation
ML-DSA keypairs generated at wallet creation. No classical keys ever touch the chain.
Digital Notary built-in
Native notarization layer for timestamping and certifying any digital asset on-chain.
Multi-node PQC sync
Inter-node communication encrypted with ML-KEM. No plaintext gossip protocol.
QRNG-compatible key gen
Key generation pipeline supports Quantum Random Number Generators for maximum entropy.
API-first architecture
RESTful API for wallet creation, transaction signing, and block queries. Build anything.
Try it now.
The BQ Ledger testnet is live. Create wallets, sign transactions, and query blocks using the REST API. Full PQC stack running in production.
- Create PQC wallets via API
- Sign transactions with ML-DSA
- Query blocks and transaction history
- Full API documentation available
# Create a new PQC wallet
$ curl -X POST \
https://bequantumapi.quantum-shield.online/create_wallet \
-H "Content-Type: application/json" \
-d '{ "username": "satoshi" }'
# Response
{
"address": "bq1qxy2kgdygjr...",
"public_key": "ML-DSA-65:0x7f3a...",
"algorithm": "ML-DSA-65"
}
Build on quantum-resistant infrastructure.
The window to build natively secure systems is now. Don't retrofit -- start right.