Here's a better link for that database:
http://www.cvgm.net/demovibes/artist/227/
Anything else besides some internet radio profile saying it's so? That is literally the only site I can find giving that date. Not even his Wikipedia article which he may have himself edited gives it.
I suspect that database automatically fills in January 1 for unknown dates when only the year is known. More January 1 birthdays it's the only place that lists:
Horace Wimp (
1973),
Volker StrĂ¼bing (
1971),
Tim Follin (
1970? I'm not sure what the initial source of this is actually),
Firefox (
1971), etc.