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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.

KOKO Pop-up — Rafflecopter Proof of Fairness

On August 19, 2026 at 6:36 PM, Rafflecopter ran the giveaway “KOKO Pop-up” on Instagram. The winner was @esra__ktl, selected from 49 unique participants using a cryptographically secure random number generator (CSPRNG) with SHA-256 hashing.

SHA-256 hash: 8917b1d51bfed910ced277a1cad1532eb4175e41249988ec0ec48ea56174af16

Random seed: f622b91fa433a6ecfb9dd78a197071da32207246e03de41c062f4ea8dbc075a7

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.

Verified by Rafflecopter

Winner

esra__ktl

KOKO Pop-up

August 19, 2026 at 6:36 PM

Draw Date

Cryptographic Proof

Algorithm

SHA-256 CSPRNG

Seed

f622b91fa433a6ecfb9dd78a197071da...

SHA-256 Hash

8917b1d51bfed910ced277a1cad1532eb4175e41249988ec0ec48ea56174af16

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 8917b1d51b or use the in-browser verifier.

Platform: Instagram·View Post
8917b1d51b

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