Start with the stored baseline
The July 2, 2026 Adopt Me baseline records Shadow Dragon at 2,450 Trade Index points and Bat Dragon at 2,100. These are stored reference scores. They are not Robux prices, a sample average of completed trades, or offers that another player has agreed to accept.
The baseline starts the record. Its date describes when that state was recorded, not when every statement about the item was independently checked.