I don't care who he is.
I want to know how to get a chunk of wood and a padlock in a wine jug.
The bottle with the explanation on it says that the padlock was put in piecemeal and assembled in the bottle.
The wood was obviously put in by several pieces, also. i would presume he broke the wood along the grain so that, when adhered together, there isn't any sign of discontinuity.
i imagine he had to use long tools to assemble the lock and apply glue/position the wood. and to tie the knot...