Utilize your existing MetaMask, Trust Wallet, or other Ethereum based Network wallet. You will not actually connect your wallet until ready to do a transaction. Certicos only references your registration to this wallet address as part of your profile. You may change your wallet address at any time in your profile settings.
Certicos uses the Arbitrum One Network token which is a Layer 2 of the Ethereum Network. You will need Arbitrum bridged Ethereum to complete transactions along with the CERT Token.
More information is available on our homepage or inside your wallet setting after you register.