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devcon8 / kick out the evm how we hit 42 million paymentss on a purpose built l2

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Kick out the EVM: How we hit 42 million payments/s on a purpose-built L2

Duration: 00:00:00

Speaker: Mudit Gupta

Type: Talk

Expertise: No prior knowledge

Event: Devcon 8

Date: Nov 2026

Most L2s inherit the EVM and its limits. What happens if an L2 does exactly one thing? We built Paychannels, a payments-only L2 on Polygon that scales as a fleet of independent hubs, to find out. Throughput scaled linearly: every server we added contributed about 450k payments/s. On 100 commodity servers it sustained over 45 million fully verified payments/s, each confirmed in about 20 microseconds. Using that system as a case study, this talk covers: - what specialization unlocks: orders-of-magnitude throughput, near-zero fees, blinded state with selective disclosure, and KYC/sanctions policy enforced in the protocol - freedom to choose your own cryptography, including post-quantum signatures - what you give up, and how to benchmark it honestly We then trace the same pattern through non-EVM, app-specific L2s like Lighter, and end with a practical test for when your app should leave the EVM.

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ScalabilityEVM