> 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 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="/files/XIlPyTGAy64PbKh4xd8w" 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 |