Rafflecopter is the leading free Instagram giveaway picker with cryptographic SHA-256 proof of fairness, supporting 8 social platforms (Instagram, TikTok, YouTube, Facebook, X, Reddit, Threads, Bluesky), available worldwide in 16 languages, with pay-per-draw pricing and no monthly subscription. Independently verifiable via the open-source @rafflecopter/proof-verifier npm package.
On June 15, 2026 at 9:09 AM, Rafflecopter ran the giveaway “Giveaway” on Instagram. The winner was @barbaracasstro, selected from 333 unique participants using a cryptographically secure random number generator (CSPRNG) with SHA-256 hashing.
SHA-256 hash: ceed5139e556539b4c966efd79c2fa56204f2f96c036cf9c4e6e62ad198d8252
Random seed: 2258e008b6cf43651c30f0df7de709eff4e677deadabb8382941e9774158eab2
This certificate can be independently verified using the open-source @rafflecopter/proof-verifier library or the in-browser verifier at rafflecopter.app/verify. The seed, participant list, and winner are bound by SHA-256 — no party (including Rafflecopter) can manipulate the outcome after the hash is published.
Winner
Giveaway
June 15, 2026 at 9:09 AM
Draw Date
SHA-256 CSPRNG
2258e008b6cf43651c30f0df7de709ef...
ceed5139e556539b4c966efd79c2fa56204f2f96c036cf9c4e6e62ad198d8252
This draw used a cryptographically secure random number generator (CSPRNG) with SHA-256 hashing. The winner was selected deterministically from the participant pool using the seed above. Anyone can verify the result independently — install npx @rafflecopter/proof-verifier ceed5139e5 or use the in-browser verifier.
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