Decades ago there was an article that I read on waxing the chain and since I was tired of the mess from oil based lubricants I gave it a try. It worked well, however, removing the chain with a rivet tool was a bit of an inconvenience. Now we have quick links or master links
I use the Oz Cycling wax technique. I like the fact that the, what the Aussie's call paraffin oil, makes the wax more soft. My challenge was what is "paraffin oil". In the US we would call it lamp oil. The next problem is finding it without citronella. If you like the smell or you want to repel bugs then this is for you. I ended up ordering it online without the citronella.
I use a rice cooker to heat the wax and keep a thermometer in the wax.
He has some good video's. I don't know what his background is, however, it does a good job of qualifying chain wear. He also has a good video on waterproofing clothing.