TL;DR
- Optimism reported that 54 blockchains use OP Stack and that these networks processed 66.8% of Layer 2 and Layer 3 transactions in an average month of 2026.
- The ecosystem averaged 908 million monthly transactions and recorded $35 trillion in gross stablecoin transfers between January and September.
- Projects using its technology include World, Unichain, Ink, and Soneium, while OP Mainnet hosts applications such as Morpho, Velodrome, and ether.fi Cash.
Optimism published a report on the growth of its ecosystem and the leading applications and blockchains using OP Stack, its infrastructure for building Ethereum-compatible networks.
According to official statistics, 54 blockchains operate on mainnet using OP Stack. These networks processed an average of 66.8% of Layer 2 and Layer 3 transactions between January and September 2026.
During that period, the ecosystem averaged approximately 908 million transactions per month and recorded $35 trillion in gross stablecoin transfers.
By the end of September, the networks also held $8.2 billion in stablecoins, $7.5 billion in assets deployed in DeFi, and $22.2 billion in total value secured.
Optimism’s OP Stack Ecosystem Includes 54 Blockchains
Major networks built with this technology include World, Unichain, Ink, and Soneium, which use OP Stack to develop their own blockchain infrastructure.
Projects can operate their networks independently or use OP Enterprise services, through which Optimism provides technical support and infrastructure management.
Ink uses a fully managed model, while GIWA, developed by Dunamu, the company behind Upbit, follows a self-managed approach and remains in testnet.
Bitpanda is also developing Vision Chain, a blockchain that uses OP Enterprise’s managed services.
Meanwhile, OP Mainnet allows developers to deploy applications directly on a public network without creating a separate blockchain.
Projects on the network include Morpho, a decentralized lending protocol; Velodrome, a decentralized exchange; and ether.fi Cash, which reported more than 100,000 active cards and 300,000 accounts in August.
The network also hosts Zipangcoin, a series of tokens backed by gold, silver, and platinum, and mRe7ETH, an ETH-denominated product developed by Re7 Labs and offered through Midas.
OP Stack Applications Generated $227 Million in Revenue
Between January and September, teams behind applications deployed across the Optimism ecosystem generated $227 million in revenue, excluding blockchain fees.
Optimism also reported that the supply of stablecoins in circulation reached $8.2 billion by the end of September.
The ecosystem’s expansion also includes institutional projects still under development. In South Korea, Toss and KOMSCO completed digital asset transaction tests, while KB Securities signed an agreement with Securitize and the Optimism Foundation to explore tokenized funds. DB Securities also announced a two-year development project.
These initiatives remain in testing, planning, or preliminary agreement stages and do not yet represent operational commercial products.
