I had a full implementation of NIP-66 completed in NDK, but the PR being open for 5 months and maintaining a fork holding me back so I had to abandon it and have been working to create a toolkit agnostic full implementation. All my existing implementations right now are hardcoded.  You can check that PR in NDK for implementation hints.

As a side note: I'm not aware of anyone who has done the ad-hoc implementation that leverages web-of-trust  (`some.relay.xyz` was seen by `dan` 2 days ago)  As for me ad-hoc reports will be the very last thing I implement. Would make sense that a social client would implement such a thing...