Joan Jett and the Blackhearts #34909881

members (measured 31 Aug 2026, 21:13 UTC)

5 September 2024

created (per Roblox API)

10 August 2026

first measured by this register

Membership history

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
18 Aug 2026, 17:34	2	first reading

Ownership

Owned by user #7307152036 as measured.

Members we’ve seen

Blitz (@Cliqueri) — Management (rank 2)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

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Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.