How Linea Became the Go-To Layer-2 for SWIFT — and the Choice for MetaMask’s $30M Rewards Program
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Key Takeaways
Linea is a zkEVM layer-2 on Ethereum, designed for speed, security, and full EVM compatibility.
SWIFT is prototyping its new settlement ledger on Linea, connecting the network to global banking experiments.
MetaMask launched a $30M rewards program in LINEA tokens, driving retail adoption of the chain.
Compared to Optimism and Arbitrum, Linea stands out with zero-knowledge security and direct Consensys ecosystem integration.
The Ethereum ecosystem is no stranger to innovation. In recent years, dozens of layer-2 networks (L2s) have launched to solve Ethereum’s scalability issues. Yet in late 2025, one project has suddenly taken center stage: Linea, Consensys’ zkEVM-powered network.
In just one week, Linea made headlines twice:
SWIFT, the global banking cooperative that connects over 11,000 financial institutions, confirmed it is prototyping a new settlement ledger with Consensys. Consensys CEO Joseph Lubin revealed that this ledger will be built on Linea.
MetaMask, the world’s most widely used crypto wallet, announced a $30 million rewards program for its users, to be distributed in LINEA tokens.
These twin announcements highlight Linea’s growing role as both the infrastructure choice for traditional finance and the consumer-facing layer-2 of choice for millions of Web3 users.
This article explains what Linea is, why SWIFT and MetaMask are betting on it, and how it compares with established competitors like Optimism and Arbitrum.
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To understand Linea, you first need to know why layer-2 networks exist.
Ethereum is the most secure and widely used smart contract platform, but it can only handle around 15–30 transactions per second. When demand surges, users face high gas fees and slower processing.
That’s where L2s come in. These are networks built on top of Ethereum that process transactions more efficiently and then post results back to Ethereum for security.
Linea’s unique approach:
zkEVM technology: Linea uses zero-knowledge rollups (zk-rollups). These bundle thousands of transactions into one cryptographic proof and submit it to Ethereum. The proof ensures everything is valid without needing to replay all transactions.
EVM equivalence: Linea is designed to be fully compatible with Ethereum’s Virtual Machine (EVM). Developers can deploy their existing Ethereum apps on Linea with almost no modification.
Backed by Consensys: Linea is not just another L2, it’s developed by Consensys, the company behind MetaMask and Infura. This gives Linea direct integration into the tools that most Web3 developers and users already rely on.
In simple terms, Linea is Ethereum’s fast lane: cheaper, quicker, but still anchored to Ethereum’s security.
$LINEA, The Native Asset of Linea Network
The Linea chain has its own native token, $LINEA, which was officially launched through a token generation event (TGE) in September 2025. While the network still relies on ETH for gas fees, the LINEA token plays a separate role within the ecosystem. At launch, over 9.3 billion tokens were distributed via an airdrop to eligible users, out of a total capped supply of 72 billion LINEA.
Unlike some blockchain tokens, LINEA does not provide on-chain governance rights. Instead, it incorporates a buyback-and-burn mechanism, where surplus fees are used to reduce circulating supply over time, supporting long-term sustainability and value within the Linea ecosystem.
Why SWIFT Is Exploring Linea
On September 29, 2025, SWIFT announced it is adding a blockchain-based shared ledger to modernize international payments. The prototype is being developed with Consensys and more than 30 global banks, including JPMorgan, Citi, HSBC, and Santander.
In case you missed it, @ethereumJoseph confirmed SWIFT x Linea (there was a lot of FUD that it was only with Consensys, not Linea)
Enterprise credibility: Because Linea is a Consensys project, it comes with established enterprise partnerships. Consensys has previously worked with central banks on CBDC pilots.
Ethereum alignment: Many tokenization pilots, from bond issuance to deposit tokens, already use Ethereum standards. Linea offers scalability while staying fully compatible.
zk security: Banks demand settlement finality and risk management. Linea’s zk-rollup architecture offers faster finality compared to “optimistic” rollups, where fraud challenges can take days.
This makes Linea one of the first L2s positioned not just for crypto-native DeFi, but for global financial infrastructure.
MetaMask Rewards: $30M in LINEA Tokens
At almost the same time, MetaMask, the gateway wallet for over 30 million users, announced its new Rewards Program.
MetaMask announced $30M in LINEA token rewards. | Source: @MetaMask on X
In Season 1, MetaMask will distribute more than $30 million in LINEA tokens to active users. Participants can expect referral benefits, mUSD incentives, exclusive partner rewards, and access to tokens.
The initiative is not just about new users, but long-time community members will also be recognized. Dedicated supporters and early adopters will receive special benefits, ensuring their contributions are valued as the ecosystem grows.
MetaMask stressed that more information will be released soon, with the full program scheduled to launch in the coming weeks.
The decision to use LINEA tokens is significant because:
It ensures that MetaMask’s rewards directly boost adoption of Linea.
It creates real demand and circulation for LINEA tokens beyond speculation.
It aligns MetaMask users with the broader Consensys product stack.
For everyday users, it means earning rewards simply by doing what they already do, but on Linea.
Linea vs. Optimism vs. Arbitrum: Key Differences Explained
Ethereum L2s are not new. Optimism and Arbitrum already dominate the market, securing billions in total value locked (TVL). So why is Linea different?
Features
Linea
Optimism
Arbitrum
Technology
zkEVM (zero-knowledge proofs)
Optimistic rollup
Optimistic rollup
Ethereum compatibility
Full EVM equivalence
High, but not perfect
High, but not perfect
Settlement speed
Near-instant finality with zk proofs
7-day challenge period
7-day challenge period
Backing
Consensys (MetaMask, Infura)
Optimism Foundation + partners
Offchain Labs
Adoption
Rapidly growing ($2.3B secured, Oct 2025)
Strong, esp. via Coinbase’s Base
Largest L2 by TVL ($18B)
Enterprise focus
Highlight: SWIFT collaboration
Focused on ecosystem growth
Strong in DeFi protocols
Here’s the quick summary of the differences between these L2s:
Optimism and Arbitrum use “optimistic rollups.” Transactions are assumed valid unless challenged. This means final settlement can take up to a week.
Linea uses zero-knowledge rollups, which generate mathematical proofs for each batch of transactions. This means faster confirmation and stronger cryptographic guarantees.
While Optimism and Arbitrum thrive in DeFi, Linea’s strongest pull is its integration with MetaMask and enterprise ties via Consensys.
Why Linea Could Become the “Default Layer-2”
Linea’s rise is not just about technology, it’s about strategic positioning.
In traditional finance: If SWIFT’s blockchain ledger moves from prototype to production, Linea would become part of the plumbing for cross-border payments. That’s a level of adoption few crypto projects have ever achieved.
In consumer crypto: By choosing Linea for its rewards program, MetaMask ensures that millions of users will experience Linea firsthand. This creates a built-in network effect.
In developer adoption: With full EVM equivalence and lower costs, Linea offers developers a simple migration path for their Ethereum apps.
Put simply, Linea is not trying to replace Ethereum, it’s trying to make Ethereum usable at global scale, for both banks and consumers.
Risks and Challenges Ahead
Despite the excitement, there are still open questions:
SWIFT’s prototype is not production yet. Banks are cautious, and it may take years before live settlement runs on Linea.
Competition is fierce. Arbitrum, Optimism, Starknet, and others all have head starts in adoption and liquidity.
Decentralization maturity. Linea is still considered early-stage (Stage 0 in L2BEAT’s framework), meaning key infrastructure is controlled by Consensys for now.
These factors mean Linea’s dominance is not guaranteed, but its positioning is uniquely strong.
In the span of a few days, Linea became the subject of two of 2025’s biggest blockchain stories:
The world’s largest banking network (SWIFT) is prototyping its blockchain ledger on Linea.
The world’s most used crypto wallet (MetaMask) is distributing $30 million in LINEA tokens through a new rewards program.
For a relatively new Layer 2, this is remarkable traction.
If SWIFT follows through with its adoption, and if MetaMask Rewards gain traction with users, Linea could soon be more than “just another L2.” It could be the default scaling lane for Ethereum, trusted by both Wall Street and Web3.
Linea is a Layer 2 blockchain built on Ethereum by Consensys. It uses zk-rollup technology to make transactions faster and cheaper, while staying fully compatible with Ethereum apps.
Why did SWIFT choose Linea?
SWIFT is working with Consensys to prototype a blockchain-based settlement ledger. Consensys CEO Joseph Lubin confirmed this will use Linea, thanks to its enterprise backing, Ethereum compatibility, and zero-knowledge security.
How can I earn MetaMask rewards in LINEA tokens?
MetaMask users can earn rewards by referring friends, using partner dApps, and engaging with new wallet features. Season 1 is distributing over $30 million in LINEA tokens.
How does Linea compare to Optimism and Arbitrum?
While Optimism and Arbitrum use optimistic rollups, Linea uses zero-knowledge proofs for faster and more secure settlement. Its key advantage is deep integration with MetaMask and enterprise adoption via Consensys.
Disclaimer:
The information provided in this article is for informational purposes only. It is not intended to be, nor should it be construed as, financial advice. We do not make any warranties regarding the completeness, reliability, or accuracy of this information. All investments involve risk, and past performance does not guarantee future results. We recommend consulting a financial advisor before making any investment decisions.
Onkar Singh has three years of experience as a digital finance content creator. Throughout his career, he has collaborated with various DeFi projects and crypto media outlets. In his leisure time, he enjoys fitness activities at the gym and watching movies across different genres. Balancing his professional and personal interests, Onkar continues to contribute to the digital finance landscape while pursuing his hobbies.
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