> For the complete documentation index, see [llms.txt](https://docs.ethsign.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ethsign.xyz/a-deeper-dive/technical-details/cryptographic-signatures.md).

# Cryptographic Signatures

Cryptographic signatures are used to prove identity and sign documents.

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&amp;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 |