[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Network](./puppeteer.protocol.network.md) > [SignedExchangeSignature](./puppeteer.protocol.network.signedexchangesignature.md) > [certSha256](./puppeteer.protocol.network.signedexchangesignature.certsha256.md) ## Protocol.Network.SignedExchangeSignature.certSha256 property The hex string of signed exchange signature cert sha256. Signature: ```typescript certSha256?: string; ```