Transaction Signing
Short answer: Transaction signing creates a cryptographic proof that you hold the private key authorizing a transfer. See how long SynX signing actually takes.
Definition
Transaction signing is the process of creating a cryptographic signature that authorizes a blockchain transaction. The signature proves that the transaction creator possesses the private key for the sending address, preventing unauthorized fund transfers.
Technical Explanation
Signing takes the transaction data (inputs, outputs, amounts) and the private key as inputs, producing a signature that cryptographically binds the key to the transaction. The signing algorithm is deterministicโthe same inputs always produce the same signatureโyet the signature cannot be created without the private key.
Post-quantum transaction signing uses algorithms like SPHINCS+ that resist quantum attacks. The signing process is similar but produces larger signatures and may take slightly longer. Security comes from mathematical problems that remain hard for quantum computers.
SynX Relevance
SynX transactions are signed with SPHINCS+-SHAKE-128s, producing 7,856-byte post-quantum signatures at NIST Level 1. Your wallet constructs the transaction, signs it locally with your spending key, and broadcasts only the signed transaction. The private key never leaves your device, and the signature provides quantum-resistant proof of authorization.
Frequently Asked Questions
- How long does SynX transaction signing take?
- Longer than elliptic-curve signing, because hash-based signatures do more work; the wallet signs locally before broadcasting.
- Is my private key exposed during signing?
- Never. Signing happens locally on your device; only the signature is transmitted.
- Can a signed transaction be modified?
- No. Any change to the transaction invalidates the signature.
Quantum-secure authorization for every transfer. Sign 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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