[anti-abuse-wg] RIPE Autonomous System Numbers

A few questions, if you don't mind...

Given some arbitrary record which is stored within the RIPE WHOIS
data base, such as an organization (ORG-*) record or a record for
a number resource, such as an AS, how can I determine the date on
which that record was created?  Do I just look for the earliest
date found in any of the associated changed: fields?

Give an AS number, issued within the RIPE region, how can I find
the identity of the associated LIR?  Is the identity of the
associated LIR provided by the sponsoring-org: field of the
WHOIS record for the AS?

What sorts of credentials or bona fides must or should applicants
who are requesting AS number allocations provide to the RIPE LIR
which processes the request(s)?

Has any AS number allocation, issued within the RIPE region, ever
been revoked without the consent of the registrant of that allocation?
If so, which ones?  And in those cases, what policies and/or procedures
were used or followed during the revocation process?  Are these
policies and/or procedures written down someplace, or are they entirely
ad hoc?