# Cryptographic Signatures

Cryptographic signatures are at the core of EthSign, representing everything from data integrity to digital consent. We utilize your cryptographic signature to prove your identity and sign documents.

<figure><img src="https://3644903585-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fu6zM4I79q0utqYtAoKl8%2Fuploads%2FbZUw4W5KR9a92AOTq3NW%2FEthSign%20Next%20Sequence%20Diagrams%20(1).svg?alt=media&#x26;token=e645f47f-6dd9-4d8f-9b61-102285413742" alt=""><figcaption><p>Authenticating User Identity and Creating a Session</p></figcaption></figure>

## Supported Wallets

With the cross-chain nature of EthSign, we accept and support signatures made from the following list of blockchain wallets:

| ECDSA (secp256k1)                                            | EdDSA (ed25519)                 |
| ------------------------------------------------------------ | ------------------------------- |
| **EVM:** Coinbase, MetaMask, OKX, or any standard EVM wallet | **Aptos:** Petra                |
| **Bitcoin:** Hiro                                            | **Solana:** Phantom             |
|                                                              | **TON:** TON Connect, TON Space |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.ethsign.xyz/a-deeper-dive/technical-details/cryptographic-signatures.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.