The Glass Vault
A competition site asks you to believe a number you never see. This is our answer to that. Before entries open we publish a fingerprint of the number that decides the draw; after the draw we publish the number itself. The two can only agree if nothing was changed in between — and you can check that here, in your own browser, without an account.
01
Seal
A random 256-bit server seed is generated when a competition is created. Only its SHA-256 fingerprint is published.
02
Draw
HMAC-SHA256 over the client seed and nonce turns that seed into a number between 0 and 1, and that number into a ticket.
03
Reveal
The seed itself is published with the result. Recompute it below and check it against the fingerprint.
Verify a result
Paste the seeds from a drawn competition or from your own roll history. This runs in your browser — nothing is sent to us.
Sealed and waiting
- £10,000 tax-free cash
c2b148b5cbd98495d709be18e5601d1912ca7c0311faa8b3175aee0e78fe5e3a
cap 5,999 · closes 13 Aug 2026, 14:03
- iPhone Pro Max, 1TB
aaa2f0c774603bc0f0231a031fb84241a51e3fa8213930dc02c0bb92355e5804
cap 1,499 · closes 14 Aug 2026, 14:03
- Performance hatch + £5,000 cash
2ab006316b31d70122a7d9a7b8d1d3db18b5f5b6626904d601be8ccb6f3445fe
cap 4,999 · closes 16 Aug 2026, 14:03
- MacBook Pro 16in
1e87b14f29d06ac0e50ea397a40cfc3c519cc6371ddd96f813a08909387dfb77
cap 1,999 · closes 18 Aug 2026, 14:03
- Console + 4K TV bundle
443f8564ba28af9e01a040fcc80f02ff06b559ea2396fa3ed77bcf5f7681d938
cap 2,499 · closes 19 Aug 2026, 14:03
- Porsche 911 Carrera
80d909f5eac99833f25d1d80f17bbd49d67d7a667de2f3c7459dd60bd261659b
cap 7,999 · closes 21 Aug 2026, 14:03
- Luxury gold chronograph
ce5eb3d1901761fc261bb6fcab20f5f21001259a32331ee9b9eb3aa49be77d64
cap 2,999 · closes 24 Aug 2026, 14:03
- The Tech Instant Win
5897d1884d640993c8d40017276ddc315a19c8d3740dc99a96667102c9d28229
cap 4,000 · closes —
Revealed
No draws have been made yet. Every one that is will be listed here with its seed, in full, for good.
How to check your own roll
01
Open fairness & seeds in your account and rotate your pair. Rotating publishes the server seed you have been playing on.
02
Copy that revealed server seed, your client seed, and the nonce of the roll you want to check from your roll list.
03
Paste them above, pick the game pool, and the verifier lands on the same item you were given. If it does not, tell us and we will publish what went wrong.