So the transaction to your address 13Y46QiUbbqEZhHWgHdHUJpt8PrEfz8qTk will soon disappear or be marked as "double-spend".
It's not even a double spend, it was never spend to TS.
If it's a double spend, blockchain.info shows a big warning. Now it shows this:
https://s18.postimg.org/daus8sk21/gif.gifNote the
negative Final Balance.
Blockchain's algorithm of detecting double spend is not perfect, they can't detect every double spend.
I assume in this case is because of more than 24 hours between the 1st and 2nd transaction.
The sender clearly made a transaction with the same unspent transaction output as input in a new transaction.
If not double spend, what do you call this?
