After four years of operating as an independent sidechain, Ronin is set to become an Ethereum layer-2 network. The migration, scheduled for May 12, represents a major technical pivot for the gaming-focused blockchain that supports the popular play-to-earn game Axie Infinity. The hard fork will introduce a new architecture built on the OP Stack—the modular framework behind Optimism—and a novel consensus model called Proof of Distribution.
The transition has been planned for months and aims to address several long-standing weaknesses: security, tokenomics, and scalability. Ronin has been under intense scrutiny since March 2022, when hackers drained $625 million worth of crypto from the bridge linking Ronin to Ethereum. That exploit remains the largest decentralized finance (DeFi) bridge hack on record. The new layer-2 design is intended to eliminate the need for a bridge that holds large amounts of locked value, instead relying on Ethereum's native security for finality and data availability.
Why the Move Matters
Blockchain networks typically fall into two categories: sidechains and layer-2 solutions. Sidechains, like the original Ronin, have their own validators and consensus mechanism. They are independent, which gives them flexibility but also creates a security bottleneck at the bridge connecting them to Ethereum. Layer-2 networks, on the other hand, inherit their security from Ethereum by posting transaction data on the main chain. This greatly reduces the attack surface for bridge exploits, because funds are not typically held in a single smart contract vulnerable to theft. By migrating to a layer-2, Ronin effectively outsources its security to Ethereum's proven validator set.
The switch to the OP Stack means Ronin will be an optimistic rollup. Optimistic rollups assume transactions are valid by default and only run fraud proofs when challenged. This design is battle-tested by Optimism and has been adopted by several other projects, including Base, the layer-2 from Coinbase. For users, the change will eventually bring faster and cheaper transactions, though the initial hard fork will cause a brief interruption in service.
Network Downtime and Hard Fork Details
The hard fork is scheduled to begin on May 12 at 12:00 UTC. During the migration, all transactions on Ronin will be paused for approximately 10 hours. This includes gameplay actions in Axie Infinity, marketplace trades, and any token transfers or decentralized finance operations. Developers have warned players and liquidity providers to complete any urgent transactions before the cutoff. After the fork, the network will restart as a fully Ethereum-compatible layer-2. Users will not need to change their wallets or private keys, but they may need to update their wallet configurations to connect to the new network.
The migration also affects the RON token, which is used for gas fees, staking, and governance. Under the sidechain model, RON had a high inflation rate to reward validators who secured the network. The new Proof of Distribution model introduces a dramatically reduced inflation schedule. Proof of Distribution distributes newly minted tokens not to validators directly, but to active participants in the ecosystem—such as players, developers, and liquidity providers—based on verifiable contributions. This change is expected to lower the annual inflation rate from around 20% to under 5% in the first year, with further reductions over time.
Background: The Largest DeFi Hack
Ronin was launched in early 2021 by Sky Mavis, the studio behind Axie Infinity. At its peak, Axie Infinity had over 2 million daily active users, largely in developing countries where players earned income through the game. The sidechain was designed to handle high transaction volumes at low cost, but its bridge to Ethereum became a target. In March 2022, attackers used stolen private keys to forge withdrawals, draining 173,600 Ether and 25.5 million USDC. The value of the stolen assets has since fluctuated with crypto markets, but at the time it was the largest single hack in crypto history.
Sky Mavis reimbursed affected users by raising funds from investors including Binance and a16z. The exploit exposed the fundamental risks of sidechain bridges: they typically rely on a small set of validators or multi-signature schemes that can be compromised. After the hack, Ronin increased its validator set from five to twenty-one and implemented additional security measures, but the underlying architecture remained flawed. The decision to move to a layer-2 was seen as the only way to truly eliminate bridge risk.
The OP Stack and Proof of Distribution
The OP Stack is an open-source development framework maintained by the Optimism Collective. It allows anyone to launch a layer-2 network that is compatible with the Ethereum Virtual Machine (EVM). Ronin will leverage the stack's modular design, which separates execution, settlement, and data availability. This enables Ronin to customize its own fee market and token economics while still benefiting from Optimism's proven fraud proof system.
Proof of Distribution (PoD) is a novel consensus mechanism developed by the Ronin team. Unlike proof-of-stake, where validators stake tokens to secure the network and earn rewards, PoD distributes new tokens based on verifiable real-world activity. For example, a player who completes daily quests in Axie Infinity or provides liquidity on Katana (the Ronin DEX) accrues "distribution points." These points are used to allocate newly minted RON tokens. The system is designed to reward contribution over capital, theoretically reducing centralization and aligning incentives with long-term usage rather than passive staking.
PoD will replace the validator staking model entirely. Validators will still exist—they propose blocks and participate in fraud proofs—but they will be compensated through transaction fees rather than token inflation. The reduced inflation is expected to make RON more scarce and potentially increase its value, though cryptocurrency markets remain highly volatile.
Impact on the Gaming Ecosystem
Ronin has struggled to recapture its early growth since the hack and subsequent crypto bear market. Active users in Axie Infinity have dropped from millions to tens of thousands. However, Sky Mavis has diversified its offerings with new games like Axie Infinity: Origins, an adventure game, and collaborations with other studios. The layer-2 transition is a bet that better security and lower costs will attract a new wave of game developers. By adopting the OP Stack, Ronin becomes part of a larger ecosystem of Ethereum rollups that can share infrastructure and liquidity.
Other gaming blockchains, such as Immutable X and Polygon (which operates as a sidechain and a zk-rollup), have already moved to layer-2 solutions. Ronin's migration aligns with a broader industry trend away from independent sidechains and toward networks that inherit Ethereum's security. Analysts believe this will make gaming blockchains more attractive to institutional investors and traditional game studios that are wary of bridge exploits.
Challenges and Risks
Despite the improvements, the transition is not without risk. Hard forks can introduce bugs that cause temporary network outages or even loss of funds. The 10-hour downtime may frustrate users who cannot access their tokens or complete time-sensitive activities. Additionally, the Proof of Distribution model is untested at scale. While it reduces inflation, it also introduces complexity in measuring user contributions. If the distribution algorithm is gamed or exploited, it could undermine the token's value.
There is also the question of user adoption. Many existing Ronin users are familiar with MetaMask and the Ronin Wallet. The shift to a layer-2 may require them to bridge assets from Ethereum or add the new network manually. While the team has promised a seamless transition, any friction could drive users to competitors like opBNB or SKALE.
The broader crypto market is also in a downturn. Bitcoin and altcoins have lost significant value in May 2026, and many layer-2 tokens have underperformed. RON's price may face selling pressure after the migration as speculators buy the rumor and sell the news.
Historical Context of Sidechains to L2 Migration
Ronin is not the first sidechain to migrate to a layer-2. In 2023, the xDai chain rebranded to Gnosis Chain and began transitioning to a zk-rollup architecture. Polygon also moved its MATIC token to a zk-rollup with the launch of Polygon zkEVM. These migrations reflect a growing consensus in the Ethereum community that sidechains are inherently less secure than layer-2 solutions because they rely on their own validators. Ethereum founder Vitalik Buterin has repeatedly warned that "bridges are the weakest point in the ecosystem." The Ronin hack proved that point in dramatic fashion.
The migration also highlights the evolving role of gaming blockchains. Initially, many games launched on their own sidechains to avoid congestion and high fees on Ethereum mainnet. But as layer-2 technology matured, the trade-offs shifted. Now, developers can get the low fees and high throughput of a sidechain while inheriting Ethereum's security. The OP Stack, in particular, has become a popular choice for gaming rollups because it supports custom gas tokens and is easy to deploy.
Sky Mavis has committed to supporting the new network with a grant program for developers. The Ronin ecosystem currently hosts not only Axie Infinity but also several decentralized applications, including Katana (a decentralized exchange), Mavis Market (an NFT marketplace), and various gaming guilds. All of these will migrate to the new layer-2.
Technical Details of the Hard Fork
The hard fork will occur at block number 35,000,000 on the original Ronin sidechain. Nodes running the old client will stop producing blocks after reaching that height. The new Ronin layer-2 client, built on the OP Stack, will then take over. Validators must update their software to the new version before the fork. A testnet migration was conducted in April 2026 to ensure a smooth transition.
Ethereum users will be able to bridge assets to the new Ronin via the official Ronin Bridge, which will be updated to support layer-2 deposits. The bridge will use the canonical token bridge of the OP Stack, meaning deposits will be processed by Ethereum's consensus rather than a multi-signature contract. Withdrawals from the new Ronin to Ethereum will take approximately seven days, as is standard for optimistic rollups due to the fraud proof window.
The team has also announced that RON token holders will not need to take any action. The token contract will be migrated automatically. However, RON tokens that were staked on the sidechain will be unstaked during the downtime, and new staking will be available after the migration. The new staking mechanism will be integrated with Proof of Distribution.
Future Roadmap
Looking ahead, Sky Mavis plans to introduce zero-knowledge (ZK) proofs later in 2026 to further enhance privacy and scalability. The current version uses optimistic fraud proofs, which are slower than ZK-rollups. By adding ZK-rollup capabilities, Ronin could achieve near-instant finality. The team also hinted at a cross-chain interoperability layer that would allow Ronin to communicate with other OP Stack networks, such as Optimism, Base, and Zora.
For now, the immediate priority is a successful hard fork. The Ronin community has been informed through social media, blog posts, and in-game announcements. Validators have signaled readiness, and the testnet migration was completed without any major issues. If all goes according to plan, Ronin will become one of the largest gaming-focused layer-2 networks on Ethereum, with a unique tokenomics model that could serve as a blueprint for other projects.
Source: Coindesk News