How many album unit sales will Billie Eilish’s “Happier Than Ever” generate in its first week?

This is a scalar market on the number of album unit “sales” that Billie Eilish’s album “Happier Than Ever” will have in the first week that it appears on Rollingstone’s weekly rankings of Top 200 Albums. The upper bound for this market is 600,000 album units, and the lower bound is 200,000 album units. The resolution source for this market will be Rolling Stone’s weekly ranking of popular albums, https://www.rollingstone.com/charts/albums/, which ranks albums each week, beginning on Friday and going through to the next Thursday. For example, if the album was released on a Monday, the Rollingstone week period used would be the period from the previous Friday to following Thursday. The resolution source will be checked on the Friday, the day after the Rollingstone week-long period, at 12:00 PM ET. If album unit data is not available by August 11, 2021, 12:00 PM ET, this market will resolve to 50-50 for Long and Short. In the event of ambiguity in terms of the market outcome, the market will be resolved at the sole discretion of the Markets Integrity Committee (MIC). You can use the calculator to the right (underneath the Buy modal) to calculate how each Long or Short Token price corresponds with residential sales. Long and Short shares will settle proportionally to the outcome value if the final value is between these bounds, but if the final value exceeds either the upper or lower bound, the price of each Outcome Token is capped at $1 and $0. In the event of ambiguity in terms of the market outcome, the market will be resolved in good faith at the sole discretion of the Markets Integrity Committee (MIC).

How trading works

Polymarket uses a central limit order book (CLOB) model — you can buy or sell shares of any outcome at the current market price, or place limit orders at your target price. All positions are settled in USDC when the market resolves.

Resolution

Markets resolve through UMA's Optimistic Oracle. After the market closes, a proposer submits a resolution, followed by a 2-hour dispute window. If no dispute is raised, the resolution is accepted. Disputed markets go to UMA token holder vote.