> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getpara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Verify Signatures with Solana Libraries

> Verify message and transaction signatures using Solana Web3.js or Anchor

Verify Ed25519 signatures to confirm that a message was signed by a specific Solana address. Essential for authentication and ensuring data integrity.

<Card title="Sign Messages First" description="Learn how to sign messages before verifying them" href="/v3/react/guides/web3-operations/solana/sign-messages" horizontal />

## Verify Signatures

<Tabs>
  <Tab title="@solana/kit">
    ```typescript theme={null}
    import { useParaSolanaSigner } from '@getpara/react-sdk';
    import { createSolanaRpc } from '@solana/kit';
    import { getUtf8Encoder } from '@solana/codecs-strings';
    import nacl from 'tweetnacl';
    import bs58 from 'bs58';

    const rpc = createSolanaRpc("https://api.mainnet-beta.solana.com");

    function VerifySignature() {
      const { solanaSigner, isLoading } = useParaSolanaSigner({ rpc });

      const verifyMessage = async () => {
        if (!solanaSigner) return false;

        const message = "Hello, Solana!";
        const messageBytes = new Uint8Array(getUtf8Encoder().encode(message));

        const signatureResult = await solanaSigner.signMessages([
          { content: messageBytes, signatures: {} }
        ]);
        const signatureBytes = signatureResult[0][solanaSigner.address];

        const publicKeyBuffer = solanaSigner.sender;

        const isValid = nacl.sign.detached.verify(
          messageBytes,
          signatureBytes,
          publicKeyBuffer
        );

        return isValid;
      };

      return <button onClick={verifyMessage}>Sign & Verify Message</button>;
    }
    ```
  </Tab>

  <Tab title="@solana/web3.js">
    ```typescript theme={null}
    import { useParaSolana } from './hooks/useParaSolana';
    import { PublicKey } from '@solana/web3.js';
    import nacl from 'tweetnacl';
    import bs58 from 'bs58';

    function VerifySignature() {
      const { signer } = useParaSolana();

      const verifyMessage = async () => {
        if (!signer) {
          console.error("No signer available. Connect wallet first.");
          return;
        }

        const message = "Hello, Solana!";
        const messageBytes = new TextEncoder().encode(message);

        // Sign the message first
        const signature = await signer.signBytes(Buffer.from(messageBytes));
        const signatureBase58 = bs58.encode(signature);

        // Verify the signature
        try {
          const publicKeyBytes = new PublicKey(signer.address).toBytes();

          const isValid = nacl.sign.detached.verify(
            messageBytes,
            signature,
            publicKeyBytes
          );

          console.log("Message:", message);
          console.log("Signature:", signatureBase58);
          console.log("Signature valid:", isValid);
          console.log("Signer:", signer.address);

          return isValid;
        } catch (error) {
          console.error("Verification failed:", error);
          return false;
        }
      };

      return <button onClick={verifyMessage}>Sign & Verify Message</button>;
    }
    ```
  </Tab>

  <Tab title="Anchor">
    Verify signatures using the same approach as @solana/kit — the signer address is the public key:

    ```typescript theme={null}
    import { useParaSolanaSigner } from "@getpara/react-sdk";
    import { createSolanaRpc } from "@solana/kit";
    import { getUtf8Encoder } from "@solana/codecs";
    import nacl from "tweetnacl";
    import bs58 from "bs58";

    const rpc = createSolanaRpc("https://api.devnet.solana.com");

    function SignAndVerify() {
      const { solanaSigner, isLoading } = useParaSolanaSigner({ rpc });

      const handleSignAndVerify = async () => {
        if (!solanaSigner) return;

        const message = getUtf8Encoder().encode("Verify me!");
        const [signatures] = await solanaSigner.signMessages([
          { content: message, signatures: {} },
        ]);
        const signatureBytes = signatures[solanaSigner.address];
        const publicKeyBytes = bs58.decode(solanaSigner.address);

        const isValid = nacl.sign.detached.verify(message, signatureBytes, publicKeyBytes);
        console.log("Signature valid:", isValid);
      };

      if (isLoading) return <p>Loading...</p>;
      return <button onClick={handleSignAndVerify}>Sign & Verify</button>;
    }
    ```
  </Tab>
</Tabs>

## Next Steps

<CardGroup cols={3}>
  <Card title="Sign Messages" description="Create signatures to verify" href="/v3/react/guides/web3-operations/solana/sign-messages" icon="signature" />

  <Card title="Execute Transactions" description="Send and verify transactions" href="/v3/react/guides/web3-operations/solana/execute-transactions" icon="paper-plane" />

  <Card title="Configure RPC" description="Set up custom RPC endpoints" href="/v3/react/guides/web3-operations/solana/configure-rpc" icon="server" />
</CardGroup>