What does pack-opening transparency require?

In practice: odds disclosed before purchase, odds that cannot change afterwards, contents verifiable against a manifest, and a record of what was actually delivered. Self-reported figures satisfy none of these to a sceptical buyer or an outside reviewer.

Categories that have faced this question before — loot boxes, gaming, sweepstakes — converged on the same components: disclosure before the transaction, immutability of the disclosed odds, and verifiable delivery. Live breaking currently has the first in patchy form and neither of the others.