How It Works
Sui's key innovation is its object-centric model — instead of account-based state, every asset on Sui is an 'object' with a unique ID, type, and owner. Transactions that touch different objects can execute in parallel without coordination overhead, enabling massive horizontal scalability. Owned object transactions (simple transfers, most user actions) use a Byzantine Consistent Broadcast with sub-second finality, bypassing full consensus. Shared object transactions use Bullshark consensus (built on the Narwhal DAG mempool) for ordering. The Move language, originally developed for Diem, provides resource types that are impossible to copy or discard accidentally, eliminating a class of smart contract bugs common in Solidity.
Consensus Mechanism: Proof of Stake (Narwhal/Bullshark)
Proof of Stake consensus selects block proposers based on the amount of cryptocurrency staked as collateral. Validators risk losing their stake (slashing) if they act dishonestly, creating economic security without energy expenditure. Stake-weighted selection means larger stakers have proportionally greater influence on block production.
Key Architecture Facts
| Category | Layer 1 |
| Consensus | Proof of Stake (Narwhal/Bullshark) |
| Launched | 2023 |
| Founder | Evan Cheng |