public void CorruptedTransactions()
{
Keys user1keys = Keys.Create();
Keys user2Keys = Keys.Create();
ISignedDocument signedDocument = SignedDocument.Create(user1keys, DocumentConverter.STRING.Get("It's a test with a basic document."));
ISignedTransaction signedTransaction1 = signedDocument
.ToSignedTransactionRoot()
.Add(user1keys, DocumentConverter.STRING.Get("Updated."));
ISignedTransaction signedTransaction2 = signedTransaction1
.Add(user2Keys, DocumentConverter.STRING.Get("Add a signature to the document."));
ISignedTransaction corruptedTransaction = new SignedTransaction(signedTransaction1.PreviousSignedTransaction, DocumentConverter.STRING.Get("Replace with a corrupted document"), signedTransaction1.PublicKey, signedTransaction1.Signature);
signedTransaction2 = new SignedTransaction(corruptedTransaction, signedTransaction2.Document, signedTransaction2.PublicKey, signedTransaction2.Signature);
Assert.IsFalse(signedTransaction2.Verify());
}