Key features
Stable is a delegated Proof-of-Stake Layer 1 with single-slot finality, full EVM compatibility, and USDT0 as the native gas token. The features below are the ones that shape day-to-day integration. Each links to the page that covers it in depth.
Protocol-level features
| Feature | What it means |
|---|---|
| Single-slot finality | A transaction is final once it's in a block. No multi-block confirmation wait. |
| Full EVM compatibility | Solidity, Vyper, Foundry, Hardhat, ethers, viem, and eth_* RPC methods work unchanged. |
| USDT0 as gas | One asset serves as both native balance and ERC-20. No separate gas token to hold. |
| Cross-chain bridging | USDT0 moves onto Stable from Ethereum, Arbitrum, HyperEVM, Tron, and other chains via LayerZero OFT. |
USDT-specific features
- USDT as gas — USDT0 serves as both the native gas token and an ERC-20 token on the same balance.
- Gas waiver — Governance-authorized waivers submit wrapper transactions that execute at zero gas price on the user's behalf.
- Guaranteed blockspace — Enterprise partners secure reserved capacity in every block for payment flows.
- USDT transfer aggregator — High-volume USDT0 transfers batch into parallelized, fault-tolerant settlement bundles.
- Confidential transfer — Zero-knowledge cryptography shields transfer amounts while keeping parties auditable.
For which upgrades are live today and which are on the roadmap, see Roadmap.
Next recommended
- Ethereum comparison — Identify what stays the same and what changes when you port from Ethereum to Stable.
- Flow of funds — Trace USDT from on-ramp through on-chain transfer to off-ramp settlement.
- Architecture overview — Walk through the consensus, execution, database, and RPC layers that deliver these features.