Before we list the sources, let’s address the core of your search: the word "verified".
When you type thetower2012koreanmoviewatchonlineengsub verified, you are looking for three specific guarantees: thetower2012koreanmoviewatchonlineengsub verified
Thus, a "verified" source means a legitimate, paid, or ad-supported legal streaming service or a trusted digital retailer. Before we list the sources, let’s address the
No unauthorized streaming site can be genuinely “verified” for: Thus, a "verified" source means a legitimate, paid,
Legitimate verification only comes from licensed distributors (e.g., CJ Entertainment, Well Go USA).
If you love the film, buy the Blu-ray. The Korean Region A Blu-ray and the US release by 5Points Pictures (now out of print but available on eBay) come with verified, high-quality English subtitles. This is the only 100% future-proof method.