Didn't take long for the puzzle to be solved!
Step 1: The private key in the post leads to the public key 1bitdoN4...
Step 2: The [left] and [right] hidden BBCode represented binary -> "first five"
Step 3: The first five letters of the pubkey are "bitdo". bit.do is a URL shortener.
Step 4: The color code is #01112d. bit.do/01112d redirects to a pastebin with a 'privkey'.
Step 5: The funds were sent from 1bitdo... to 1CaeSAr... A Caesar shift of 13 was used to encode the privkey.
Step 6: Only the letters were shifted. Once you shifted them back 13 places, you got the privkey.
Done.
More puzzles coming soon.
Awesome!
nice work there fella

And well played to the winner.
Viz