I sent a transaction with far too low fee and it's stuck in mempool.
I'm trying to do a double-spend with a higher fee without any luck.
My wallet: 15Zz2KP5iA7oVarmtmBvb9ZHUmQaSFL9M8
Unconfirmed transaction: 0b0177688485922027b336c24e765fdea8dc03d2ad79f87019705f2ca9fb970a
I'm using coinb.in to create, sign and broadcast transaction but I get Error: 64: scriptsig-not-pushonly.
The transaction seems to be valid when I verify it.
Can anyone point my in the right direction for this?