Raffle · rules
How the draw works.
5 small cabins, 10 backups, one provably-fair commit-reveal draw on 2026-07-31. The same algorithm anyone can audit by hand using a SHA-256 tool.
Eligibility
Who can enter.
- Anyone planning to attend Roughin' It In The Sun (2026-08-07 – 2026-08-09).
- One entry per email address.
- One entry per network. Shared wifi, mobile carriers, and dorm/family networks all count as the same network — coordinate and use distinct connections if multiple of you want to enter.
- Entries that violate the above are rejected at submission time; nothing is silently entered.
Provably-fair algorithm
The math.
Before entries open
Server generates a 32-byte random seed S. We publish H = SHA-256(S) on this site. S stays sealed in the database.
When you enter
Each entry is assigned a v4 UUID id. Save yours — it's shown on the confirmation screen.
At 2026-07-31
Entries close. Admin clicks "Reveal & draw". The raw seed S is published. Anyone can verify SHA-256(S) == H with any SHA-256 tool.
Picking winners
For every entry, compute score = SHA-256(S || "|" || id). Sort scores ascending. The first 5 entries are winners; the next 10 are backups.
Verification
Use the lookup tool on the results page with your idto see your computed score and placement. Reproduce it locally to confirm the server didn't tamper.
What we collect
Data handling.
- Name, email, phone, and area — used only to contact winners, verify uniqueness, and display accepted winners publicly by first name, last initial, and area.
- Hashed IP (SHA-256 with a server pepper) — used only to enforce one-entry-per-network and rate-limit submissions.
- Hashed user agent — short-fingerprint audit only.
- Data is deleted within 30 days after the event unless you become a winner and opt in to follow-up communication.
- No third-party analytics on the raffle pages.
Questions?
Contact your CCANA or SEMA event volunteer. Winners are notified directly after the draw — no automated emails go out.