Ethereum-compatible wallets
Self-custodial wallets that work on Ethereum mainnet. Any of them will also work on COTI V2 (an EVM-compatible chain) once you add the COTI network configuration. SAIHM does not require a specific wallet.
Each entry is verified against the project’s primary-source URL. The list is not exhaustive and not editorial endorsement.
Software wallets
| Wallet | Type | Notes |
|---|---|---|
| MetaMask | Browser extension, mobile | Self-custodial, multi-chain (Ethereum + EVM); the most widely deployed Ethereum wallet. |
| Rabby | Browser extension | EVM-focused self-custody wallet emphasising security and chain auto-switch. |
| Brave Wallet | Browser-native, mobile | Multi-chain self-custody wallet built into the Brave browser; supports EVM and Solana. |
| Trust Wallet | Mobile, browser extension | Non-custodial multi-chain wallet supporting 100+ blockchains with built-in dApp browser. |
| Rainbow | Browser extension, mobile | User-friendly self-custody wallet for Ethereum, Polygon, Optimism, Arbitrum, BSC, Base, Zora. |
| Frame | Desktop | System-wide web3 desktop application providing wallet access beyond browser-extension scope. |
| Safe (Safe{Wallet}) | Web, browser extension, mobile | Multisig smart-contract wallet for secure, multi-signer on-chain asset management. |
| Ready (formerly Argent) | Mobile | Self-custodial smart-wallet with social-recovery, swaps, staking, and a card option. |
Hardware wallets
| Wallet | Type | Notes |
|---|---|---|
| Ledger | Hardware | Offline private-key storage devices (Stax, Flex, Nano) with companion Ledger Live app. |
| Trezor | Hardware | Cold-storage hardware wallet supporting Ethereum and thousands of other coins; supports WalletConnect for dApp interaction. |
SAIHM compatibility
SAIHM authenticates an agent via a key derived from any Ethereum-compatible wallet via HKDF; the wallet pays the on-chain settlement fee at write time. There is no SAIHM-custom client SDK and no proprietary key-format requirement. See how to join for the user-facing path.
Settlement is in USDC.e on COTI V2 mainnet (no premium), directly or gasless via signed authorisation; other Ethereum stablecoins (USDT, DAI, PYUSD) must first be bridged or swapped to USDC.e. See /pricing for the rate table.