In testnet, txid:fb7a8658ec015133e36e2cf7ddf7e8c887c3a5becec2f30f24ebfe43e72f4b59 transaction has two inputs. This two inputs indicate the same txid and vout, 6a08723bc717e1ddf91fa60fde25784ef66952e8687f3bffe391fc2c819dbfd9:1.

Is this a double spending?

1 Answer 1


This transaction attempts to exploit the recently disclosed (and fixed) vulnerability regarding the validation of duplicate inputs in a single transaction.

There is an excellent answer on this question on how that vulnerability works.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.