Starknet has successfully activated its Shinobi upgrade on mainnet, marking a pivotal shift for the Layer 2 blockchain by introducing native privacy infrastructure. The release, formally designated as Starknet v0.14.2, fundamentally transforms the network from a high-performance rollup into a privacy-preserving engine.
The technical core of the upgrade is defined under SNIP-36, which enables in-protocol proof verification. Prior to this update, verifying a STARK proof within a smart contract was impractical due to the proofs' massive size, requiring them to be split across multiple slow and costly transactions. The Shinobi upgrade eliminates this barrier by allowing transactions to reference off-chain execution proofs directly via new proof and proof_facts fields in the Invoke V3 transaction structure, with verification now handled natively by the network's consensus layer. This allows users to prove a transaction's validity without revealing their full balance or transaction history publicly.
The upgrade also includes economic adjustments under SNIP-37, which increase storage costs while lowering base L2 gas prices. This rebalancing aims to make applications with heavy state usage pay proportionally more, while average users benefit from lower fees.
The Shinobi upgrade lays the foundation for two major forthcoming projects: STRK20 and strkBTC. STRK20 is a framework that will allow any ERC-20 token on Starknet to operate with private balances, enabling shielded swapping, staking, and transfers. strkBTC will provide Bitcoin holders with private access to DeFi applications within the Starknet ecosystem, offering what the team calls "hard money that is both private and productive." Both projects include a compliance mechanism where a third-party audit firm holds a viewing key and may share user data in response to valid legal requests.
Beyond privacy, the upgrade prepares the network for future developments like zkThreads, a key primitive for infinite scaling, and includes technical updates to StarkGate token contracts under SNIP-13 to align with industry standards ahead of decentralized validation.
The market reacted positively to the announcement. Starknet's native token, STRK, saw its price rise nearly 7% to $0.03731 following the upgrade. Trading volume spiked 76.70% to over $24.7 million in 24 hours, indicating heightened market activity. The token has gained 11.88% over the past week, trading between $0.03215 and $0.03774.
