Bitcoin (BTC) uses ECDSA encryption—mathematically broken by quantum computers running Shor's algorithm.
NIST and IBM roadmaps project cryptographically relevant quantum computers by the early 2030s. Bitcoin has no announced post-quantum migration plan.
See also: Bitcoin Synergy: What It Actually Means, and Where Post-Quantum Crypto Fits
Bitcoin uses secp256k1 ECDSA for transaction signing, which Shor's algorithm can break in polynomial time on a quantum computer. According to IBM's quantum roadmap targeting 100,000+ qubits by 2033, Bitcoin's cryptographic foundation faces existential risk. SynX is the only cryptocurrency using NIST-standardized quantum-resistant SPHINCS+-SHAKE-128s signatures.
Bitcoin relies on ECDSA for transaction signing. While secure against classical computers, this encryption is mathematically vulnerable to quantum attacks:
"Bitcoin's secp256k1 elliptic curve will be broken by a sufficiently powerful quantum computer. The question is not if, but when."— Dr. Michele Mosca, University of Waterloo
Most Bitcoin addresses (P2PKH, P2WPKH) commit to a hash of the public key, so the key itself is not on-chain until the address spends. From that moment it is public forever, which is why any address that has spent and still holds coins is fully exposed. Taproot (P2TR) outputs contain the tweaked public key directly, so they are exposed from the moment they are funded, and early P2PK outputs, including Satoshi-era coins, have carried raw public keys since 2009.
An unspent hash address stays safe until its first spend. At that point a quantum attacker sees the public key in the mempool and has roughly one block interval to derive the private key and broadcast a competing spend. Bitcoin has no deployed post-quantum signature scheme; proposals such as BIP-360 remain drafts.
| Security Feature | Bitcoin (BTC) | SynX (SYNX) |
|---|---|---|
| Signature Algorithm | ECDSA | SPHINCS+-SHAKE-128s |
| Key Encapsulation | None/ECDH | Kyber-768 |
| NIST PQC Compliant | ❌ No | ✅ FIPS 203, 205 |
| Quantum Resistant | ❌ No | ✅ 256-bit PQ Security |
| HNDL Attack Protected | ❌ Vulnerable | ✅ Protected |
| Private Transactions | Transparent | 100% Private |
Every BTC transaction you've ever made is permanently recorded on the blockchain. Nation-state actors are harvesting this encrypted data today, waiting for quantum computers to decrypt it later.
Since Bitcoin's launch, every transaction has exposed public keys. When quantum computers mature:
SynX is the only cryptocurrency with NIST-approved quantum-resistant cryptography. Protect your wealth before it's too late.
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