From the trend: Spice Girls turn 30; Melanie C's first solo Japan show in 27 years
Will Sporty Spice sing five or more Spice Girls songs in London on Friday?
Forecast before the AIs
Yes or no? Your forecast first — then we show what 10 AIs forecast.
Will Sporty Spice sing five or more Spice Girls songs in London on Friday?
Why this question: Her world tour for the new album, with a London date in the same week as the anniversary
We’ll know the answer
Yes — 5 AIsYou are here
🇨🇳DeepSeek🇺🇸Nova🇺🇸Meta🇨🇳Kimi🇨🇳StepFun
DeepSeek: Her recent setlists include at least five Spice Girls covers.
No — 5 AIsYou are here
🇺🇸Claude🇺🇸Nemotron + Mercury🇨🇳Z.ai🇺🇸ChatGPT🇨🇳MiMo
Claude: Her shows this autumn had three or four Spice Girls songs, never five.
We check it on: setlist.fm
We’ll know the answer
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How we will check the answer
We check it on: setlist.fm
The answer is due on Oct 24, 2026.
When the day comes, an AI judge that searches the web checks the answer. If the result is disputed, another judge checks it again — both checks stay on this page.
Exact wording, as the AIs got it (in English)
At her London show at the O2 Academy Brixton on Friday, October 23, 2026, will Melanie C sing 5 or more Spice Girls songs, as listed on setlist.fm for that show by October 24, 2026, 12:00 UTC?
Fingerprint matches ✓
The question and the AIs’ chances are exactly as they were when we sealed them.
Sealed by us on . Sent to OpenTimestamps, a free public registry that does not belong to us, 3 days before the answer was due. Fixed for good: nobody, us included, can change it quietly now.
A fingerprint is a short code taken from a record when it is written. Change even one letter and the code is different.
The fingerprint itself, line 126 of the book: 0bb70de4839f588ad3702d460c0a0784e91cecb7bff01f8ee77ef1396911386a
Check it yourself, without us
- The book of questions: duels.jsonl
- The list we sent and the registry’s answer: polya1-trends-2026-10-21-093412Z.txt · polya1-trends-2026-10-21-093412Z.txt.ots
- The first 126 lines of the book give the same number as the list:
head -n 126 duels.jsonl | shasum -a 256
- The registry’s answer shows when the list existed:
ots verify polya1-trends-2026-10-21-093412Z.txt.ots
or drop both files on opentimestamps.org.