var client = new SignHostApiClient(new SignHostApiClientSettings("AppName appkey", "apikey or usertoken"));

var transaction = await client.CreateTransactionAsync(new Transaction
{
	Signers = new List<Signer>
	{
		new Signer
		{
			Email = "john.doe@example.com",
			SignRequestMessage = "Could you please sign this document?",
			SendSignRequest = true,
			/*
			 * The verifications listed here are executed in order.
			 * Your last verification _must_ be one of the following:
			 * - PhoneNumberVerification
			 * - ScribbleVerification
			 * - ConsentVerification
			 */
			Verifications = new List<IVerification> {
				new PhoneNumberVerification {
					Number = "+3161234567890"
				},
				new ScribbleVerification {
					ScribbleName = "John Doe",
					RequireHandsignature = true,
				},
			}
		}
	}
});

await client.AddOrReplaceFileToTransactionAsync("PathToFile",    transaction.Id, "First document",    new FileUploadOptions());
await client.AddOrReplaceFileToTransactionAsync("PathOtherFile", transaction.Id, "General agreement", new FileUploadOptions());

/* When everything is setup we can start the transaction flow */
await client.StartTransactionAsync(transaction.Id);