The Optimism Foundation has agreed to provide Kraken with a grant of 25 million OP tokens. Worth around $100 million when the deal was struck earlier this year, it is now worth around $42.5 million. The deal, which was completed around January or February of this year, paves the way for Kraken to use Optimism’s OP Stack. Previously, Kraken announced that it would build a layer 2 network on Optimism’s OP Stack blockchain framework. OP Stack is a customizable toolkit that allows users to create their own layer 2 rollups based on Optimism’s technology. (CoinDesk)