Unless things have changed, you also need a criminal records check to be an amateur coach. Spent 24 years as a Level 3 Certified Amateur coach.
I am obviously only familiar with USA Hockey, but in talking to Canadian coaches at tournaments, it seems the systems are pretty similar.
Down here:
All Over 18 personnel (be it players, coaches, managers, officials etc)
Background Screening: done every 2 years (this can be waived if you are a LEO or have an active clearance at TS or higher, honestly it is easier to pay the $10 to get the screening than try to link up the BackGround Check entity with your CLEO or FSO)
SafeSport: basically rules and regulations to protect youth athletes - annual recertification (it used to be every 2 years).
Coaches Specific: Current Coaching Certification (for the L1-L3 Coaches this is annual (either retaking the current level, or taking the next clinic - Clinics run from 8-16hrs depending on Level and how they are done - in person, or video
For L4 you need to be have been an active L3, and take the 12 hr L4 Course - for subsequent years you need 20 Continuing Education Credits every 4 years to remain current - or take the L5
For L5 you need to have been an active L4 Coach the previous season and take a 3 day On and Off Ice Seminar (run 1 time a year at one location, this years was in Cleveland OH). L5 Coaches need to take 25 CE credits within 5 years to remain current - depending on what you are doing L5 CE can be teaching some Clinics or CE seminars.
Official Specific: L1 was a 2 Day Off and On Ice (now it is apparently a 8hr Zoom Lesson), L2 requires a year of L1 and a 4 hr Zoom Instruction and an Online Test. L3 requires to be a previous L2, and then the Advanced Officiating "class" of a 3 hr Zoom Course, a 3hr Online Distance Learning Course with various Modules, and a 3 Hour Open Book test. L4 requires at least a year at L3, and the same "Advanced Officiating" class as the L3 - once you are a L4 for 4 years you can apply to be an tenured official (which basically means you can skip through 2 hrs of videos in the modules and just take the tests). There is zero requirement to move beyond any Level unless you want to officiate higher level games you need to be a L3/4 Official to skate 3 and 4 Official games as a Referee, depending on League you will need to be a L2-L4 Official to be a Linesman in a 3 or 4 Official game.
All in all I probably spend 80hrs a year re-certifying, I'm a L4 Coach and L3 Ref (I have zero interest in Ref'ing Junior or Higher games so I doubt I will ever go for L4 (USAHockey charges double to certify as a L4 annually than a L3, and if you aren't trying to Ref Youth AA or AAA Nationals or Junior and College Hockey it isn't worth it to me).
Volunteering isn't very easy -- but when you see the various sports lists of blacklisted personnel, you can see why the hoops do get jumped through, as no one wants Youth Sports to be an easy target for predators.