Coinbase placed Concrete’s CT-USD pair into auction mode, allowing at least 10 minutes of limit-order price discovery before continuous trading begins. The exchange accepts only limit orders with the "Allow Taker" designation during the auction, excluding market and post-only orders. OKX listed CT/USDT on the same day, using a call auction from 09:00 to 10:00 UTC before spot trading starts and restricting market orders for five additional minutes. The trading launches follow Coinbase’s earlier addition of CT to its asset listing roadmap, when issuer-locked transfers had prevented deposits, trading and withdrawals. CT is the governance token for Concrete, an Ethereum-based on-chain asset-management platform.