Google and Apple removed the app from their digital stores to comply with a federal ban.
The song marked Kesha's first Hot 100 No. 1 hit.
"Although this isn’t goodbye …," the musician teased.
The unanimous ruling, citing national security concerns about China's control over the popular app, means a key part of the modern music ecosystem might soon go dark.
The outgoing administration tees up Trump to fulfill his pledge to "save TikTok," despite previously pushing for a ban over national security concerns.
Fans of Bob Dylan have been quick to single out the notable timing of his debut on the app.
RedNote and Lemon8 are now the most popular free downloads in the App Store. Both are also owned by Chinese companies.
The festival business has increasingly relied on TikTok for marketing. Now, as the Supreme Court deliberates a law that could wipe it out in the U.S., many are looking at alternatives.
The nation's highest court will hear arguments Friday (Jan. 10) over a law aimed at forcing the platform's sale by its Chinese parent company ByteDance.
TikTok has "primed users to make transactions quickly" and some labels have taken advantage, selling thousands of dollars worth of LPs.
