The most secure consensus in the blockchain industry. Immediate finality, zero forks, aviation-grade fraud resistance.
A consensus designed from scratch — not an iteration on PBFT or Tendermint
Validators chosen via cryptographic randomness. By the time a node is selected, the window for corruption has closed.
Crypto-biometric authentication with Proof of Identity for unique person identification. No whale can spin up thousands of validators. True decentralization at the identity layer.
Combined with Transaction Chains — each chain validated independently. Massive throughput without sacrificing security.
The "51% attack" narrative is from the PoW era. Modern PoS chains are far more fragile.
At 33%: Finality stops — the chain cannot confirm new blocks.
At 34%: Active censorship — attacker prevents finality and censors transactions.
At 51%: Full control — reorgs, double-spend, total censorship.
You cannot buy 90% of validators when each is authenticated via decentralized identity with crypto-biometric verification. Economic attacks (buying stake, renting hash power) are structurally impossible against Proof of Identity. This is an architectural property of the protocol — not a parameter that can be tuned.
90% vs 33% — nearly three times more malicious nodes tolerated before any security degradation.
No waiting for confirmations. Compare: Bitcoin ~60 min, Ethereum ~13 min, ATSHI <1 second.
Impossible by design. Only one valid chain state exists at any point in time.
Decentralized Identity — crypto-biometric authentication with Proof of Identity. Self-sovereign, no third-party dependency.
3.6 billion times less energy than Bitcoin. Maximum security, minimum footprint.
Fraud risk <10⁻⁹ — the same standard as commercial aviation safety systems.
| Feature | PoW (Bitcoin) | PoS (Ethereum) | PBFT (Fabric) | Tendermint | ARCH (ATSHI) |
|---|---|---|---|---|---|
| Byzantine tolerance | 51% | 33% | 33% | 33% | 90%+ |
| Finality | ~60 min | ~13 min | Immediate | Immediate | Immediate |
| Fork possible | Yes | Yes | No | No | No |
| Sybil defense | Hash power | 32 ETH stake | Certificates | Staking | Proof of Identity |
| Energy / tx | ~700 kWh | ~0.03 kWh | Low | Low | 0.42 W |
| Fraud risk | 10⁻⁶ | 10⁻⁶ | 10⁻⁶ | 10⁻⁶ | <10⁻⁹ |
90%+ byzantine tolerance, immediate finality, zero forks, decentralized identity with Proof of Identity. No other blockchain comes close.