It could be useful to have a report about relationships with dates in the future, most commonly coming from typos.

I fixed a few after running on my local database dump:

WITH l AS (
SELECT l.id, l.begin_date_year AS begin, l.end_date_year AS end, lt.entity_type0, lt.entity_type1
FROM link AS l
JOIN link_type AS lt ON lt.id=l.link_type
WHERE l.begin_date_year > 2020
OR l.end_date_year > 2030
)
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/recording/' || e.gid
FROM l
JOIN l_recording_work AS lar ON lar.link=l.id
JOIN recording AS e ON e.id=lar.entity0
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/recording/' || e.gid
FROM l
JOIN l_area_recording AS lar ON lar.link=l.id
JOIN recording AS e ON e.id=lar.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/release/' || e.gid
FROM l
JOIN l_area_release AS lar ON lar.link=l.id
JOIN release AS e ON e.id=lar.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/recording/' || e.gid
FROM l
JOIN l_artist_recording AS lar ON lar.link=l.id
JOIN recording AS e ON e.id=lar.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/label/' || e.gid
FROM l
JOIN l_artist_label AS lal ON lal.link=l.id
JOIN label AS e ON e.id=lal.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/release-group/' || e.gid
FROM l
JOIN l_artist_release_group AS larr ON larr.link=l.id
JOIN release_group AS e ON e.id=larr.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/artist/' || e.gid
FROM l
JOIN l_artist_artist AS laa ON laa.link=l.id
JOIN artist AS e ON e.id=laa.entity0
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/recording/' || e.gid
FROM l
JOIN l_label_recording AS llr ON llr.link=l.id
JOIN recording AS e ON e.id=llr.entity1
UNION
SELECT l.begin, l.end, l.entity_type0, l.entity_type1, 'http://musicbrainz.org/recording/' || e.gid
FROM l
JOIN l_place_recording AS lpr ON lpr.link=l.id
JOIN recording AS e ON e.id=lpr.entity1
;

Some links might be valid though (e.g. a conductor-orchestra relation about an ongoing 10 years contract)