​
Connecting

To establish a connection to a user’s account, call the connect method on the provider. 
try {
  await window.coinbaseSolana.connect();
} catch (err) {
  // { method: 'connect', message: 'Connection error' }
}
If the user accepts the request and the connection is successful, the publicKey field is set to the PublicKey of the connected account, and the isConnected field is set to true. 
window.coinbaseSolana.publicKey.toString();
// J7VKAb39Vgxar55cFtzLu8QJ2dwS9MrV7NyQJoUK1yDa
window.coinbaseSolana.isConnected;
// true
If the user rejects the request to connect, an error is thrown.

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Disconnecting

To disconnect a user’s account from your application, call the disconnect method on the provider. 
await window.coinbaseSolana.disconnect();
If the user’s account is disconnected, the publicKey field is set to null, and the isConnected field is set to false.