Layer-2 Blockchain Developer StarkWare Plans ‘Cairo’ to Verify Layer-3s

The Cairo Verifier, which the StarkWare and the Herodotus developer team worked on together, is a key piece of technology that verifies proofs and posts them back to the layer-2 blockchain, instead of Ethereum’s mainnet.

AccessTimeIconFeb 8, 2024 at 6:03 p.m. UTC
Updated Mar 8, 2024 at 9:16 p.m. UTC
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StarkWare, the developer behind the Starknet blockchain, announced on Thursday the launch of a new “Cairo Verifier” in the next few weeks, opening the door to layer-3 application-based chains on Starknet.

Cairo, which the StarkWare and another developer, Herodotus, worked on together, is a key piece of technology that verifies proofs and posts them back to the layer-2 blockchain, instead of Ethereum’s mainnet.

In a Telegram message to CoinDesk, a StarkWare representative said the tool is “designed to bridge the crucial gap to layer-3 scalability in the blockchain ecosystem.”

The new component will enable the verification of proofs from layer-3 chains on layer-2s, which according to StarkWare was previously not possible. StarkWare said the Cairo verifier will reduce costs with verifying these proofs and speed up the time for transactions to be confirmed (known as latency).

Cairo will be at the core of verifying storage proofs on layer-2s and layer-3s, according to StarkWare.

Storage proofs are a type of cryptographic feature that allows users to “prove” that certain transactions or assets exist on other chains, without having to rely on a third party. StarkWare and Herodotus developers have worked together previously to develop storage proofs on Starknet.

“The Cairo Verifier represents an evolution from previous verification technologies, offering improved capabilities tailored to the current demands of the blockchain ecosystem,” StarkWare said.

Edited by Bradley Keoun.


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Margaux Nijkerk

Margaux Nijkerk reports on the Ethereum protocol and L2s. A graduate of Johns Hopkins and Emory universities, she has a masters in International Affairs & Economics. She holds a small amount of ETH and other altcoins.

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