Major Description
In 0.23 and later versions, we have a txid per edit, and the loading process verifies that there are no gaps. Lacking this in 1.0, we can use generation stamps as a proxy - the OP_SET_GENERATION_STAMP opcode should never result in a decreased genstamp. If it does, that would indicate that the edits are corrupt, or older edits are being applied to a newer checkpoint, for example.