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Provably fair

Verify any spin

Every outcome is decided before the reel moves, by a hash we commit to in advance. Once a server seed is rotated it is revealed, and anyone can reproduce every roll it ever produced.

How it works

  1. 1. We publish sha256(serverSeed) before you play. The seed itself stays encrypted.
  2. 2. Each spin computes HMAC_SHA256(serverSeed, clientSeed + ":" + nonce).
  3. 3. The first 13 hex characters become a number, reduced modulo the ticket count. That ticket falls in exactly one prize range.
  4. 4. On rotation we reveal the seed. Its hash must match what we published — check it below.

If the first 13 characters land in the small non-uniform tail of the range, we advance to the next 13 characters of the same digest instead. This removes modulo bias without changing the message you verify.

LootraUnbox. Play. Win Big.

Lootra is a mystery box platform where excitement meets epic rewards. From collectible items to high-value prizes, every open is a thrill.

18+Provably fair

Play responsibly. Opening boxes should stay entertainment, never a way to make money. Set your own limits, take breaks, and step away if it stops being fun. Support is available around the clock.

Deposits and withdrawals are not enabled yet. Until a payment provider is live, balances move only when Lootra credits an account or an item is sold back. Bonus credit is promotional and is never withdrawable. Boxes, prizes, odds and wins shown are real records from Lootra’s catalogue and ledger.

© 2026 Lootra. All rights reserved.

Unbox. Play.Win Big.