QuickNode Earn Launches on OP Mainnet

A major US exchange captured **$75 million in sequencer revenue** during H2 2025 by operating its own OP Stack chain instead of renting infrastructure. **Key Economics:** - Owning infrastructure = 100% revenue retention - Renting space = revenue goes to the provider - Full control over fee structures and block space allocation **OP Enterprise Benefits:** - Managed deployment and operations - Pre-integrated ecosystem (RPCs, oracles, bridges, indexers, wallets) - Compliance and custody solutions included - Teams focus on product development, not infrastructure management H2 2025 performance across CEX OP Stack chains showed $495M in app revenue, 6B transactions, and $5.5B in smart contracts—demonstrating the financial case for ownership over rental models.

**DB Securities is developing STO and real-world asset infrastructure for Jeju using the OP Stack.** The company chose this approach to maintain ownership and control over their infrastructure. This follows Optimism's recent partnership with Toss, South Korea's leading payment platform serving two-thirds of the country's population. Together, they're testing the OP Stack as a foundation for compliant blockchain-based digital finance infrastructure. The moves signal growing institutional adoption of Ethereum scaling solutions in South Korea's financial sector.

**Ink's approach to scaling onchain finance** focuses on integrating blockchain technology into applications users already trust, keeping the underlying chain invisible to end users. **The key to this strategy** is maintaining a reliable settlement layer that can handle high transaction volumes. Ink achieves this by running on OP Enterprise Fully Managed infrastructure. - Enables seamless user experience without exposing blockchain complexity - Provides programmable financial infrastructure for large-scale growth - Ensures dependable performance as transaction volume increases This partnership demonstrates how enterprise-grade blockchain infrastructure can support mainstream financial applications.

**Privacy Boost is now deployed on OP Mainnet and Soneium**, marking a significant step in bringing confidential transactions to the OP Stack. The deployment sets the stage for **Toss to run a won-linked stablecoin trial** reaching approximately 30 million users in South Korea. Toss, which handles financial transactions for two-thirds of South Korea, partnered with Optimism to explore blockchain-based digital finance infrastructure. **Key features of Privacy Boost:** - Encrypts transfers and contract logic while maintaining transaction auditability for compliance - Supports pre-confirmations, enabling private transfers within one second - Provides institutions with privacy while allowing regulators to maintain oversight The three-month proof of concept will test whether the Won can settle onchain while meeting Korea's strict compliance, privacy, and control requirements. This represents a practical test case for **tokenized finance with built-in confidentiality** from the start. More details: [Cointelegraph coverage](https://cointelegraph.com/news/south-korea-toss-partners-optimism-won-stablecoins) | [Optimism blog](https://optimism.io/blog/two-thirds-of-south-korea-runs-its-money-through-toss-now-toss-is-exploring-putting-the-won)