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✅ Cryptographically verified · sealed pick #174

Napier City Rovers vs Wellington Olympic

National League · New Zealand · 28 Jun 2026, 02:00 UTC

Final score
3 : 2
Result
Lost
Pick
Wellington Olympic
Market
1x2
Model prob.
47.2%
Best price
2.46
Min odds
2.31
Stake factor
2.30

Proof this pick was locked in before kickoff

The pick was encrypted before kickoff and published the moment it was sealed to Telegram and GitHub, each carrying an independent timestamp. The encrypted batch is also anchored in Bitcoin — a public record nobody, including us, can alter or back-date. After the match the key is released; decrypting that exact pre-published message reveals the pick, proving it was fixed in advance, not cherry-picked.

Encrypted pick (AES-256-GCM)
c2NSxp3Dr2GPK1RhFaa/sAyB1t2mpb0eBhgS7LYuXMK6EWuUXAR7fC3iYvNwJIDmYMRCJ3IR2Eo+tRcknG28UZKylynESQDyV7NxcWcShwj2RSxJo9OFv/lF4udg5zZl9s4az3ZvKKnUdB+83vxe5laaixxQul0JkUEeIvggThVdxDHwLFyr0BGFJ0SB1JHtMvbo1OcsAkd4tcXpVkJUBZdiHwHDHhGt1EhX5JJzQ+nqOX3lT0qqtTAHUpC6+HMqPmZtbYTyenuPJoY/7cROx4e3o5cpmu9YT0l9tBKNtmlLhxnVYU0dr33nfBhxoD+rxP7DN3gjb2DBUU2KWmpqY6RKfcQUOPBlTEcn/UbHYao=
key fingerprint sha256: 53c7fc13da0b12fd68d9aa7a3f7f0f51a08c92317ce9c8f57ea5fb2064e7f03f
Decrypt it & read the pick
Decryption key (released after the match)
5a8d80aeeb050cd9cf29c21d3cd3baf59b820ffea7c01913093cef72ac6b20a2
Decrypt in CyberChef →
Verify it yourself — paste both values, no install

The Encrypted pick above is base64( nonce[12 bytes] + ciphertext + tag[16 bytes] ), AES-256-GCM. Zero-install check: open your browser console (press F12Console), paste this, press Enter — it decrypts the exact pick shown above:

const blob = Uint8Array.from(atob("c2NSxp3Dr2GPK1RhFaa/sAyB1t2mpb0eBhgS7LYuXMK6EWuUXAR7fC3iYvNwJIDmYMRCJ3IR2Eo+tRcknG28UZKylynESQDyV7NxcWcShwj2RSxJo9OFv/lF4udg5zZl9s4az3ZvKKnUdB+83vxe5laaixxQul0JkUEeIvggThVdxDHwLFyr0BGFJ0SB1JHtMvbo1OcsAkd4tcXpVkJUBZdiHwHDHhGt1EhX5JJzQ+nqOX3lT0qqtTAHUpC6+HMqPmZtbYTyenuPJoY/7cROx4e3o5cpmu9YT0l9tBKNtmlLhxnVYU0dr33nfBhxoD+rxP7DN3gjb2DBUU2KWmpqY6RKfcQUOPBlTEcn/UbHYao="), c => c.charCodeAt(0));
const key  = Uint8Array.from("5a8d80aeeb050cd9cf29c21d3cd3baf59b820ffea7c01913093cef72ac6b20a2".match(/../g).map(h => parseInt(h, 16)));
crypto.subtle.importKey("raw", key, "AES-GCM", false, ["decrypt"])
  .then(k => crypto.subtle.decrypt({ name: "AES-GCM", iv: blob.slice(0, 12) }, k, blob.slice(12)))
  .then(b => console.log(new TextDecoder().decode(b)));

Prefer a GUI? The orange button opens CyberChef pre-filled. Or split the parts yourself for any AES-256-GCM tool:

  • Algorithm: AES-256-GCM
  • Key (hex): 5a8d80aeeb050cd9cf29c21d3cd3baf59b820ffea7c01913093cef72ac6b20a2
  • IV / nonce (hex): 736352c69dc3af618f2b5461
  • Ciphertext (hex): 15a6bfb00c81d6dda6a5bd1e061812ecb62e5cc2ba116b945c047b7c2de262f3702480e660c442277211d84a3eb517249c6dbc5192b29729c44900f257b3717167128708f6452c49a3d385bff945e2e760e73665f6ce1acf766f28a9d4741fbcdefc5ee6569a8b1c50ba5d0991411e22f8204e155dc431f02c5cabd01185274481d491ed32f6e8d4e72c024778b5c5e95642540597621f01c31e11add44857e4927343e9ea397de54f4aaab530075290baf8732a3e666d6d84f27a7b8f26863fedc44ec787b7a397299aef584f497db4128db6694b8719d5614d1daf7de77c1871a03fabc4fec33778236f60c1514d8a5a6a6a63
  • Auth tag (hex): a44a7dc41438f0654c4727fd46c761aa

Any standard AES-256-GCM tool returns the exact same pick — the algorithm is a public standard.

How to verify the Bitcoin timestamp yourself

Bitcoin doesn't store the pick — it stores a 32-byte fingerprint (SHA-256) of the encrypted batch, via OpenTimestamps. That fingerprint is frozen in a public block nobody can alter or back-date. You can't spot it by eye on a block explorer (a block holds thousands of unrelated transactions) — you verify it with the .ots proof and any OpenTimestamps tool:

  1. Download the sealed batch file (.jsonl) and its proof (.ots) from GitHub.
  2. Drop both into opentimestamps.org (or run ots verify *.ots). It replays the proof and confirms the Bitcoin block and its UTC time.
  3. See it independently: block #955678 · anchoring transaction (its OP_RETURN holds the commitment). The block's Timestamp is when it became permanent.

Note: Bitcoin anchoring lands ~30–60 min after sealing, and a block's timestamp is miner-set (approximate). So the exact “before kickoff” proof is the seal time above — timestamped instantly by Telegram/GitHub — while Bitcoin is the independent, un-forgeable anchor of permanence.