There are only two international sanctioning bodies, FIM for motorcycles and FIA for automobiles. If a record is set under their rules, with conditions verified by their representatives, then it is an international (or world) record. Records set under the sanction of any other organizations are not "world" records, even though the speeds recorded may be higher than the official "world" record speeds. Incidentally, the FIA classification system is different from the SCTA-BNI system. Don't know about FIM.
The BUB meet is apparently run under FIM sanction, so all you bikers can set "world" records, if your machines are up to it.
Any person or group (share the cost) can obtain a permit from the BLM for a private meet on the salt. That meet can be organized to meet all the requirements for FIA sanction and any records set would be "world" records. It's a little pricey, but there you are.
Regards, Frank
(I know how fast you were going)