This troll is harmless. A duplicate spend proof should also be signed by the same user (Alice, in your example) to be considered a double spend.
2016-08-09 3:18 GMT+03:00 James MacWhyte <[email protected]>: > One more thought about why verification by miners may be needed. > > Let's say Alice sends Bob a transaction, generating output C. > > A troll, named Timothy, broadcasts a transaction with a random hash, > referencing C's output as its spend proof. The miners can't tell if it's > valid or not, and so they include the transaction in a block. Now Bob's > money is useless, because everyone can see the spend proof referenced and > thinks it has already been spent, even though the transaction that claims it > isn't valid. > > Did I miss something that protects against this? > _______________________________________________ bitcoin-dev mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
