Four ways in
Nothing here needs permission, an account or a payment. Each of these has a first step small enough to do today.
You hold a professional licence
Sign a claim stating your trade, jurisdiction, licence reference and legal name, with a window of six months or less. Add the DNS record on the domain your clients already know. Renew it twice a year.
That puts you at level 1 with no dependency on anybody, and it is the layer that defeats a lookalike domain.
First step: RVW-1, then RVW-2
You work at an issuing authority
Export the licence list you already hold to a CSV, put it at an address that does not change, and say how often it updates. That is level 3 tier A and it needs no project.
If you can also sign it, which is one key and one DNS record, the file becomes impossible to forge and your jurisdiction becomes the first one in the index at grade A.
First step: RVW-5, or the contact page
You build something that takes payments
Read claims at the point where money moves, work through the checks in order, and render the level and the age of the evidence. Never render a badge, and warn about absence rather than decorating presence.
Then report what broke. A specification with one implementer is a specification that has not been tested.
First step: the verify page, then RVW-1
You work on this kind of problem
Seven open problems are written up with what has been tried and what would move them. OP-4 and OP-5 are the two where an outside idea would help most, and OP-1 is the one that decides whether the rest matters.
Disagreement with the eight rules is also welcome, provided it comes with what should replace them.
First step: open problems
Questions go to a person
Implementation questions, a correction to the register index, or a conversation about the one-file ask.