OP Stack layer 2 (Ink)

Ink is an Ethereum layer 2 built by Kraken on Optimism's OP Stack, as part of Optimism's Superchain. Kraken announced on 18 December 2024 that its mainnet was live, ahead of a planned date in the first quarter of 2025, with ETH as its gas token. L2BEAT lists it as an optimistic rollup that posts its data to Ethereum as blobs, and records it reaching Stage 1 of its decentralization scale on 22 January 2025.