what's Quantumroot?

Quantumroot is an ultra-efficient post-quantum vault system built directly into Bitcoin Cash's scripting language using CashVM. It delivers full 256-bit classical security and NIST Category 5 quantum security (128-bit post-quantum) via the standardized LM-OTS signature scheme (RFC 8554), which relies solely on SHA256 hash function for maximal cryptographic conservatism. Optimized for business and long-term savings, it supports seamless migration from legacy addresses without on-chain sweeps for upgrades. Key features include cross-input signature aggregation for smaller sweep transactions (up to 10.9% more efficient than P2PKH per input), privacy nonces to prevent address linking even under quantum attack, multi-signature (30+ signers), threshold conditions, time-delayed withdrawals, inheritance policies, and sweep-free policy updates using CashTokens. Post-quantum spends average ~1.5KB, with high aggregation enabling 800+ inputs per 100KB block space on BCH's parallel UTXO model.