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 May 31, 2026 at 7:00 PM, Rafflecopter ran the giveaway “BLUE Ball × Ateliê450° - Jantar²” on Instagram. The winner was @gaiadobrasil, selected from 133 unique participants using a cryptographically secure random number generator (CSPRNG) with SHA-256 hashing.
SHA-256 hash: 5f5a78bf931354b775944ecd255d5658b4b5d6a8dac3d84f3dccc202f8729645
Random seed: 190c0d1f7a9c258f6dff6315ed0f921d218649a5d277d844d0c6f4519e014c54
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
BLUE Ball × Ateliê450° - Jantar²
May 31, 2026 at 7:00 PM
Draw Date
SHA-256 CSPRNG
190c0d1f7a9c258f6dff6315ed0f921d...
5f5a78bf931354b775944ecd255d5658b4b5d6a8dac3d84f3dccc202f8729645
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 5f5a78bf93 or use the in-browser verifier.
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