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. Combined TVL across the three reached $4.7 billion in April 2026 per L2BEAT, with growth driven primarily by their unique value propositions rather than direct competition with Arbitrum or Base.
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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: 80% of sequencer fees flow back to applications and developers via a Sequencer Fee Share program. Protocols that drive transaction volume earn proportional payouts.
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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. $1.8B TVL as of April 2026, dominated by the WLD token's onchain treasury and Worldcoin staking contracts. Application ecosystem is small but growing — payment apps targeting verified users, games requiring sybil-resistance, identity-aware DeFi protocols.
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Performance. 48 TPS average, $0.02 median fee for non-verified users (free for verified). Block time 2 seconds. The free-gas model creates a stark UX divide: verified users see instant confirmations at no cost; non-verified users pay normal 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 pays 80% of net sequencer revenue back to applications proportional to the gas they generate. A protocol that drives 10% of Mode's transaction volume earns 10% of the 80% pool. The mechanism is implemented onchain via Mode's Sequencer Fee Share contracts, which protocols register with at deployment.
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Ecosystem and TVL. $420M TVL as of April 2026. The chain attracts protocols specifically targeting the fee-share model — DEX aggregators, perp DEXs, and apps with high transaction volume per dollar of TVL. Top protocols include Velodrome, Ironclad, Layer Bank, and Renzo.
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Performance. 18 TPS average, $0.04 median fee. Block time 2 seconds. Performance is similar to other mid-size OP Stack chains; the differentiator is purely economic.
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Best fit. Protocols with high transaction-volume-to-TVL ratios that can monetize sequencer rebates as a meaningful revenue stream. For a perp DEX doing $100M daily volume, the fee-share rebate can be tens of thousands of dollars per month — a real number for early-stage protocols.
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Native yield. ETH bridged to Blast auto-stakes via Lido and earns ~3% APY. USDC bridged to Blast becomes USDB, which auto-lends via MakerDAO and earns a yield reflecting the Dai Savings Rate. The yield accrues directly to user balances on Blast — no separate staking or lending step required.
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Ecosystem and TVL. $2.5B TVL as of April 2026, the largest of the three. Blast launched with an aggressive points-and-airdrop campaign that drove $1.5B in deposits before mainnet went live. Top protocols: Thruster (DEX), Pac Finance (lending), Juice Finance (leveraged yield), Ring Protocol.
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Performance. 38 TPS average, $0.03 median fee. Block time 2 seconds. Blast's user-facing experience is similar to other OP Stack chains; the yield accrual happens transparently in the background.
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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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For applications deploying on these chains, the Stage 0 security model is comparable to Base or OP Mainnet. Sequencer-pause and multisig-override risks apply equally. 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. Arbitrum has 5x the TVL of Blast and 30x the TVL of Mode, plus more mature DeFi protocols (GMX, Pendle, Aave v3 with 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. Specifics:

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 has the largest verified-user base — over 9 million World ID holders globally as of early 2026 per Worldcoin's transparency reports. Daily active addresses on World Chain run higher than the other two. Blast has more TVL but fewer unique active users due to the airdrop-farming concentration. Mode has the smallest active user base but the highest per-user transaction count.
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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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Yes, for high-volume protocols. A protocol generating $100K in monthly gas fees on Mode earns roughly $80K back via the Sequencer Fee Share program (80% of 80%). For early-stage protocols, this can equal or exceed token-emission revenue. The model breaks down at very low transaction volumes where the rebate is rounding error.
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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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