Re: assuming LoTW confirmations "count" for IOTA might not be a good idea
+ AA6YQ comments below
those requirements may be enough for IOTA to consider a QSL as a confirmation but I'm not sure just those attributes will be enough for an accepted IOTA confirmation. For example their requirements for paper cards are much stricter in that the IOTA reference must be printed on the original card, i.e. writing it on afterwards is not acceptable, the information must be provided by the DX station. See https://www.iota-world.org/islands-on-the-air/qsl-card-requirements.html . I would be surprised if LoTW matches would be acceptable without an IOTA reference from the DX station.
+ DXLab's realtime award tracking for IOTA requires each QSO to specify an IOTA tag. The question is whether IOTA will require your QSO partner to have specified an IOTA tag in the "Station Location" used to submit your QSO.