World Chain, Mode, and Blast are three of the most distinct newer L2s launched between late 2023 and early 2025. For the dominant chains by TVL, see the Ethereum L2 comparison guide. None breaks into the top five by TVL, but each ships a feature design that the dominant L2s do not, World ID-verified blockspace on World Chain, sequencer-revenue-sharing on Mode, and native yield on Blast. They are small. L2BEAT, read September 16, 2026, puts World Chain at $351M of total value secured, Blast at $82M and Mode Network at $8M, roughly $442M across all three. Arbitrum One alone is at $10.8B on the same measure. These chains are bets on a feature, not challengers for liquidity.
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This guide compares the three on their distinguishing features, ecosystem composition, throughput, fees, and the use cases each is best suited for. The short version: World Chain wins on verified-human applications, Mode on protocol-side economics, Blast on yield-bearing native ETH and USDB.
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World Chain launched in October 2024, operated by Tools for Humanity (TFH), the team behind Worldcoin and World ID. The chain is built on the OP Stack and is part of the Optimism Superchain. Its distinguishing feature: World ID-verified humans get free gas and prioritized blockspace, funded by sequencer revenue.
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Mode launched in January 2024, also OP Stack and Superchain. Operated by Mode Labs. Distinguishing feature: a share of sequencer fees flows back to the developers whose contracts generate them. Mode's Sequencer Fee Sharing documentation describes the mechanism, a registry contract that mints an NFT as the claim on a contract's accrued fees, but publishes no percentage, so treat any specific split you see quoted as unsourced.
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Blast launched in February 2024 by the Blur team. Built on the OP Stack but not part of the Superchain, Blast operates independently. Distinguishing feature: native yield on bridged ETH (auto-staking via Lido) and bridged USDC (auto-lending via MakerDAO).
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All three settle to Ethereum L1 via optimistic rollup mechanics with the standard 7-day fraud-proof window. Solidity contracts deploy unchanged on each.
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Verified-human prioritization. The unique feature is a sybil-resistance mechanism baked into blockspace allocation. Users with World ID (proven via the Orb biometric attestation) get a daily quota of free transactions. The chain reserves a portion of each block specifically for these verified users, with the cost subsidized from sequencer revenue.
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Ecosystem and TVL. $351M of total value secured per L2BEAT on September 16, 2026, the largest of the three, and heavily concentrated in assets associated with the chain's own token rather than in third-party DeFi. Stablecoins are $20.6M of that. The application ecosystem is small but growing: payment apps targeting verified users, games requiring sybil-resistance, identity-aware DeFi protocols.
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Performance. Throughput and fees on a chain this size move with whatever campaign is running, so read them live on L2BEAT's activity page rather than from a frozen figure. The structural point is the free-gas model and the UX divide it creates: verified users transact at no cost, non-verified users pay normal OP Stack fees.
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Best fit. Applications where one-person-one-account matters: airdrops to real humans, voting and governance, gated payment apps, fair-distribution NFT mints. The chain is overrepresented in countries where Worldcoin's Orb verification is widespread (Argentina, Spain, Portugal, parts of Asia).
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Sequencer Fee Share. Mode shares part of its sequencer revenue with the developers whose contracts generate it. Mode's Sequencer Fee Sharing documentation describes the mechanism: a registry contract that a developer registers a deployed contract with, which then mints an NFT representing the claim on that contract's accrued fees. Those docs set out no percentage and were last updated two years ago, so the split is not something this guide can state.
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Ecosystem and TVL. $8.1M of total value secured per L2BEAT on September 16, 2026, the smallest of the three by a wide margin, with under $1M of that in stablecoins. The chain attracts protocols targeting the fee-share model, which tend to be apps with high transaction volume per dollar of TVL rather than deep-liquidity venues.
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Performance. Mode performs like other OP Stack chains of its size; current throughput and fees are on L2BEAT's activity page. The differentiator is purely economic, not technical.
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Best fit. Protocols with high transaction-volume-to-TVL ratios that can monetize sequencer rebates as a revenue stream. Because Mode's Sequencer Fee Sharing documentation publishes no rate, the only way to size the rebate is to register a contract and measure what it accrues. On a chain carrying $8M of total value secured per L2BEAT, set expectations accordingly.
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Native yield. ETH bridged to Blast is auto-staked and USDC bridged to Blast becomes USDB, which is auto-lent. Both accrue to user balances on Blast with no separate staking or lending step. The rates are not fixed by Blast: they pass through whatever the underlying staking and savings rates pay at the time, so any APY quoted in a guide is a snapshot rather than a property of the chain.
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Ecosystem and TVL. $82M of total value secured per L2BEAT on September 16, 2026, second of the three and far below where the chain peaked. Blast launched with an aggressive points-and-airdrop campaign that pulled in deposits before mainnet went live, and the retreat from that peak is the single most important fact about its current ecosystem. Several protocols from that era, Thruster among them, no longer serve a live site.
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Performance. Blast behaves like other OP Stack chains from a user's point of view, with the yield accrual happening in the background; current throughput and fees are on L2BEAT's activity page.
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Trade-offs. The native yield comes from staking and lending integrations on L1, which means users on Blast have indirect exposure to Lido and MakerDAO smart-contract risk on top of standard rollup risk. The chain's airdrop-driven launch also concentrated TVL in addresses farming points, leading to larger-than-typical unstaking events when the airdrop unlocked in late 2024.
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Best fit. Applications where idle balances are common, wallets, treasury apps, savings products. Native yield turns idle ETH and USDC into productive assets without requiring users to opt into a separate staking flow.
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All three chains run centralized sequencers operated by the chain's foundation or core team, the L2 sequencers guide covers decentralization roadmaps in depth. None has shipped permissionless sequencing or fraud proofs at the L2BEAT Stage 1 level, they remain at Stage 0, meaning a security council multisig retains upgrade authority.
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World Chain inherits decentralization timelines from the Optimism Superchain, which plans shared sequencing via Espresso Systems for 2026. Mode is similarly bound to the Superchain roadmap. Blast operates independently, with no published decentralization timeline beyond the standard OP Stack fault-proof upgrade path.
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That matters more than it used to, because the large chains have moved on: L2BEAT lists Arbitrum One and OP Mainnet at Stage 1 while all three chains here remain Stage 0. Sequencer-pause and multisig-override risks apply to these three in a way they no longer apply equally to the leaders. None of the three have experienced major outages or governance disputes since their respective launches.
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The bridging options for newer L2s are typically narrower than for the dominant chains.
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World Chain. Native bridge via the Superchain bridge. Third-party support from Across, Hyperlane, and Stargate. CCTP supports native USDC. Bridge volume runs $20–40M weekly per DefiLlama.
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Mode. Superchain bridge plus Across and Hyperlane. CCTP not yet supported. USDC must be bridged from a CCTP chain (e.g., Ethereum or Base) using Across or Hop, which adds slippage versus native CCTP.
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Blast. Independent bridge contracts. Across, Stargate, and the Blast Bridge handle most flow. CCTP not supported. Blast's USDB is unique to the chain, converting USDB back to USDC requires either bridging via the canonical path (with its 7-day delay) or routing through a third-party that handles the conversion.
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For applications expecting users to move large amounts on or off these chains, route quality is a real consideration. Users coming from Base or Arbitrum will have a smoother time entering World Chain (CCTP-supported) than Mode or Blast.
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Compared to Arbitrum and Base, the dominant L2s (deep comparison), , these three trade ecosystem maturity for specific feature differentiation. The gap is not a multiple you can wave at: L2BEAT on September 16, 2026 puts Arbitrum One at $10.8B of total value secured against Blast's $82M and Mode's $8.1M, and Arbitrum carries mature DeFi protocols with far deeper pools. Base has wider consumer-app distribution.
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The three newer chains succeed in narrow lanes. World Chain serves verified-human use cases that no major L2 addresses. Mode's fee-share economics are genuinely unique. Blast's native yield removes a friction step that other L2s leave to user-side opt-in.
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For most general-purpose applications, the older L2s remain better starting points due to liquidity depth and protocol coverage. The newer chains are deployment targets when the specific feature differentiates the application.
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Stablecoin liquidity is shallow on all three chains compared to Arbitrum or Base. Per L2BEAT on September 16, 2026:

Those are not rounding errors against Arbitrum, they are a different order of magnitude: the same source puts Arbitrum One's stablecoin component at roughly $4.6B. Any application planning to settle user balances on these chains needs to plan the exit route before the entry route.
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For applications that need to move stablecoins onto these chains for users, the path typically routes through Arbitrum or Base then bridges in. The deeper stablecoin liquidity on the dominant L2s makes them the natural staging ground for cross-chain flows.
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Eco is a stablecoin execution network that supports multiple newer L2s, including World Chain, alongside the dominant chains. Eco Routes (CLI + API) routes stablecoin transfers between any of these networks and the rest of the 15 supported chains. For applications deploying on World Chain, Mode, or Blast, integrating Routes lets users move stablecoins onto and off the chain without managing per-chain bridge flows. The network selects the cheapest path: CCTP for native USDC where supported, third-party rails (Across, Hyperlane) for chains without native stablecoin issuance, and OTC liquidity for larger-size transfers.
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World Chain, on both the value it secures and its activity. L2BEAT on September 16, 2026 puts it at $351M of total value secured against Blast's $82M and Mode's $8.1M, and L2BEAT's activity page carries the current transaction and active-address counts for all three. World Chain's user base is also the only one of the three tied to an identity credential rather than to an incentive campaign, which makes it the most durable of the three counts.
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Blast's yield comes from auto-staking ETH via Lido and auto-lending USDC via MakerDAO on Ethereum L1. Users have exposure to Lido smart-contract risk, MakerDAO governance risk, and Blast's own bridge contract risk on top of standard rollup risk. None of these have suffered major incidents to date, but the layered risk profile is worth understanding before depositing significant amounts.
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Only in proportion to the fees they generate, and on a chain this size that is a small pool to draw from. Mode's Sequencer Fee Sharing documentation describes the registry and the NFT claim but publishes no split, so the honest answer is that you have to register a contract and measure the accrual. With Mode Network at $8.1M of total value secured per L2BEAT on September 16, 2026, do not model it as a primary revenue line.
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World Chain opted into the Optimism Superchain governance contract at launch, accepting the Law of Chains revenue-sharing agreement (2.5% of net sequencer revenue to the Optimism Collective). Blast chose to operate independently, keeping all sequencer revenue. The trade-off: Superchain members get shared security upgrade authority and future native interop; independent chains have full sovereignty over their economics.
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If your app's value proposition aligns with one of the chain's distinguishing features (verified humans → World Chain, fee-share economics → Mode, native yield UX → Blast), consider deploying there. If you need deep stablecoin liquidity, broad protocol coverage, or large user bases for general DeFi, Arbitrum or Base remain the default. Many apps deploy to both, a "main" chain for liquidity and a "specialized" chain for the differentiated feature.
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Each has different growth dynamics. World Chain growth correlates with Worldcoin's verification rollout, more Orbs deployed means more eligible users. Mode growth depends on protocols continuing to find the fee-share model worthwhile relative to other deployment options. Blast growth depends on whether native yield remains a differentiator as other L2s add similar features. None has a near-certain trajectory; each is a deliberate bet on its specific value proposition.
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Beyond these three: Unichain (Uniswap Labs, Superchain, focused on swap UX), Zora (creator economy, Superchain), Lisk, Soneium (Sony's chain, OP Stack), Lyra (options-focused), and Redstone (data-availability focused). The L2 launch pace has slowed in 2026 versus 2024, with each new chain needing a clearer differentiation thesis to attract liquidity.
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None has published an explicit policy comparable to Coinbase's Base sequencer disclosures. World Chain's verified-human prioritization is a technical mechanism rather than a censorship policy. Mode and Blast operate similarly to other OP Stack chains, with single-operator sequencers and no published filtering. As with all L2s, force-inclusion via L1 remains available as a fallback after a delay.
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