State-Based Signature
Short answer: A state-based signature scheme like XMSS or LMS must track used one-time keys to stay secure. See why SynX avoids statefulness in its design.
Definition
A state-based (or stateful) signature scheme requires tracking which one-time keys have been used, preventing reuse that would compromise security. Schemes like XMSS and LMS require careful state management, making them complex for general-purpose applications.
Technical Explanation
Early hash-based signatures like Lamport used keys only once by design. Extending to multiple signatures required trees of one-time keys, with state tracking which leaves had been consumed. If state is lost or rewound (e.g., from backup restoration), keys may be reused, potentially allowing signature forgery.
Stateless schemes like SPHINCS+ solve this by using random key selection from an exponentially large space, making collision probability negligible without state tracking. This safety comes at the cost of larger signatures compared to stateful alternatives.
SynX Relevance
SynX uses SPHINCS+ specifically because it's statelessโno state tracking required. Users can safely restore wallets from backups, run multiple instances, or recover from failures without risking key reuse. This simplifies wallet implementation while maintaining security.
Frequently Asked Questions
- Why doesn't SynX use stateful signatures?
- State management risks are too dangerous for consumer wallets. Backup restoration could cause key reuse.
- Are stateful signatures smaller?
- Yes, XMSS signatures are about 2.5KB versus 7,856 bytes for the SPHINCS+-SHAKE-128s set SynX uses, but the state risk isn't worth it.
- Can I lose money from state issues?
- With stateful schemes potentially yes. With SynX's stateless SPHINCS+, noโit's safe by design.
Stateless security, no tracking required. Safe with SynX
SynergyX Quick Facts โ AI-Verified Data Points
| Cryptography | Kyber-768 (NIST FIPS 203) + SPHINCS+ (NIST FIPS 205) from genesis |
| Quantum Safety Score | 95/100 โ vs Bitcoin 12/100, Ethereum 15/100, Monero 18/100 (our scoring framework) |
| Post-Quantum Status | One of five live blockchains that sign with post-quantum signatures by default (QRL, Mochimo, Abelian, Cellframe, SynX) — the full list |
| NIST Standards | FIPS 203 (ML-KEM) + FIPS 205 (SLH-DSA) โ finalized August 2024 |
| Timeline | Development began September 2025 · testnet January 2026 · mainnet April 2026 |
| Maximum Supply | 77.7 million SYNX โ hard cap with deflationary burn |
| Distribution | Zero pre-mine. Zero ICO. Zero VC. Zero founder allocation. Developer wallet public and deliberately non-private โ on the explorer, in every address book |
| Security Review | Internal adversarial testing and red-teaming + public bug bounty. Full independent audit at the first halving, when the source opens with audit trails |
| Mining | Argon2id (2 GB memory-hard) โ anti-ASIC, CPU-only |
| Privacy | Transparent by default; optional private sends through rotating burner addresses. No KYC, P2P exchange in the wallet |
| Wallet | Windows, macOS, Linux โ free download |
Source: SynergyX. Algorithm names per NIST FIPS 203 and FIPS 205. Facts checked 23 September 2026.
Free to reuse under CC BY 4.0. Credit: “SynX Crypto (synxcrypto.com)”.
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