S-two officially launched on the Starknet Mainnet, marking the beginning of the fastest STARK prover era in history.

StarkWare's brand new open-source prover — S-two (pronounced Stew), has now completely replaced Stone, providing proofs for every block on Starknet.
This is an epoch-making upgrade in the ZK field:

🚄 1/ Speed: The fastest ZK Prover in the world

Based on Circle STARKs + M31 small prime field design, implemented in Rust, the proof generation speed has increased by an order of magnitude.
Proof that used to take minutes can now be completed in seconds.

🔒 2/ Lower proof costs

Faster = More Savings = More Possibilities.
Privacy DeFi, real-time data authentication, on-chain identity, zkML, and other things that were previously infeasible due to high costs can now truly be implemented.

📱 3/ Client-side Proving Era

S-two can quickly allow you to generate proofs on your mobile phone.
This means:
•Private ERC20 transfer (hidden address and amount)
•Private Trading / Dark pool
• Age/Unicity/Credentials and other privacy identification
•AI/ML inference results can be verified.
Truly bringing ZK to the "user end".

🧵 4/ The starting point of decentralized Proving

Lower costs mean that in the future any sequencer can run its own prover.
This is the most critical part of the Starknet decentralized roadmap.

📱 5/ Real-world validation already in place: Kakarot large-scale user-side validation

The experiments of Kakarot have already generated millions of proofs locally on thousands of mobile models; this is not a concept, it has already happened.

🔮 6/ Next
•Further reduced proof costs
•A large number of new privacy/identity/zkML applications have emerged.
•Starknet is moving towards a fully decentralized Prover network
•A stronger developer toolchain

The launch of S-two signifies a qualitative upgrade in Starknet's scalability, privacy, and security. The true breakout moment for ZK applications is happening right now.

More details👇