Self-id and Germany
Since 1981 Germany has had the TSG - the Transsexuellen Gesetz (transsexual law)
This law allows transgender people to do two things:
-change their first name
-change the sex recorded on their birth certificate
This law has been amended umpteen times but as it stands, it's been changed to the disadvantage of transsexual people - to show that you really are transgender, a diagnosis of GID is no longer necessary and wanting to have surgery, take hormones or live as a woman doesn't really count either (terribly weird phrasing)
In order to do either of those two things, the person has to apply to the court where a hearing will be held. No lawyer is permitted to take their place, the transgender person is on their own. After the hearing the court investigates, ordering two separate and independently conducted assessments of the person to be made.
In case only the first name was changed, if that person goes on to father a child or give birth, the name change becomes invalid and they have to repeat the process. (The child's birth certificate will always identify the parents by their birth sex and first name.)
A self-id process is now in the works which will do away with the hearing in court and the court ordering two separate expert opinions on the transgender person to be made. That is, the upper chamber has voted yes to urging the government to bring this in, but when it will do so is unclear as of today.