dave$ sq-git log
b007000000000000000000000000000000000000..b008000000000000000000000000000000000000:
  Signer: carol [CA501F894EBD6193655CB77C476D56394D4E67DC]
  Use an O(log(n)) algorithm instead of one that takes O(n).
b005000000000000000000000000000000000000..b007000000000000000000000000000000000000:
  Error: Key `F712919FDC76B971A5ABAFC10DDD0BDCFD7D7C4F` missing
  Authorize Carol to be a committer.
Error: Could not verify commits b003000000000000000000000000000000000000..b008000000000000000000000000000000000000

Caused by:
    0: While verifying commit b007000000000000000000000000000000000000
    1: Key `F712919FDC76B971A5ABAFC10DDD0BDCFD7D7C4F` missing
