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Find the 90s Number 1s

Songs that reached #1 on the official UK chart between 1990-1999.

check_circle Verifiably fair
£1.00 per guess
£165.00 still to find
90s Number 1s
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???
£100.00
lock Can you guess it?
£100.00
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???
£50.00
lock Guess correctly to win
£50.00
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Genie in a Bottle [1999] by Christina Aguilera
£25.00
lock Hidden
£25.00
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???
£10.00
lock This answer is hidden
£10.00
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???
£5.00
lock Can you guess it?
£5.00
£1.00 per guess
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Each answer is:
Each answer is a song title. Artist names are not required!

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Free entry

You can submit guesses free of charge via post. One guess per envelope.

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How do you win?

Each guess is checked against the hidden answers. Correct answers are revealed and the prize awarded immediately.

How it works

Guess Enter an answer that matches the answer requirement.
Check Your guess is checked against the hidden answers.
Win 🎉 If your guess matches a hidden answer, you win its prize!

Free postal entry

You can enter this game without paying for a guess.

Each eligible postal entry must contain your user ID or email address, the ID of the game, and a guess. One guess per stamped envelope or postcard is accepted. Entries are processed manually in the order they are received.

View full free-entry instructions


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Don't just trust us. Verify us.

Before this game opened, we published a cryptographic commitment to its answers. This commitment cannot be changed without changing the published hash.

When the game ends, we reveal the original answers and the secret used to create the commitment. Anyone can recreate the hash and check that it matches the one published here.

Commitment

81cf4dbe66275537caf405ab18163c55c7012f92925b8876ef65e96f70e2f649
Algorithm SHA-256
Published
Secret Revealed when the game ends

What does this mean?

Once the commitment hash has been published, we cannot change the committed answers without the hash changing too. This means the answers are not selected or changed in response to guesses made during the game.

You don't have to take our word for it. After the game ends, you can independently verify the commitment using the published data, secret and algorithm.

See the full verification guide

All games have cryptographically committed answers

This section is a bit of a mess.. will tidy it up later.

How to verify this game

1. Save the commitment hash

This is the fingerprint of the answers that was published before the game started.

2. Wait for the game to end

Once all answers have been found, the secret and committed game data are revealed.

3. Recreate the hash

Use the revealed game data, secret and algorithm shown below to generate the hash yourself.

4. Compare the results

If your generated hash is identical to the commitment hash published here, the revealed data is exactly what was committed to before the game began.

Game details

Started
Ends
Cost per guess £1.00
Answers found 1/5

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