jm +¥©±yYß~Æ¥µKð& Oùÿ×Ôx|êLThat is what the dark web is for, makes no sense to blackmail someone on the block chain as it is publicly visible and it would already be out there forever.
https://whatsonchain.com/tx/6e0b74cec02f1082ef2907d661bfb362565ab346a2bf3955b2e8f4cc1a14c0bc