UBMS is the world's first live-operating Layer 1 blockchain to achieve 100% Full-Stack Post-Quantum Cryptography (PQC). Operating on an independent C++20 engine without cloning Bitcoin or Ethereum, UBMS completed an all-layer cryptographic hard fork at Block 50,000 between March and August 2026, eliminating 100% of classical public-key cryptography (RSA, ECDSA, EdDSA - 0 items remaining).
Key cryptographic specifications include: 1. Digital Signatures: NIST FIPS 204 ML-DSA-87 (Category 5, highest security margin, CRYSTALS-Dilithium family, NSA CNSA 2.0 standard). 2. Key Encapsulation (KEM): NIST FIPS 203 ML-KEM-1024 (Category 5, CRYSTALS-Kyber family). 3. P2P Transport: ML-KEM-1024 encapsulation + AES-256-GCM (Custom Frame VER=3, fully replacing RSA-OAEP). 4. Address Derivation: Rooted in ML-DSA-87 public key via SHA-256 and RIPEMD-160 with network prefix 0x20. 5. Cryptographic Primitives: Zero in-house math; standard OpenSSL 3.5 FIPS provider calls via EVP API. 6. Verification: ubmsinspect engine with 66 validation functions and 19-stage block verification. 7. Full Technical Report: https://forum.ubms.co.kr/pqc_report.html

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