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Open Verification

Draw Verification

Fellblade Super-Heavy Tank

Provably fair — cryptographic Draw complete

Draw complete — independently verifiable

This draw used a cryptographic commitment scheme. The draw secret was generated before ticket sales began, its sha256 hash (the commitment hash) was published, and the secret was only revealed after the draw. This proves the winner selection could not have been influenced by ticket sales.

Draw Result

Winner
Rackham, Essex
Winning ticket
#14
Entries in pool
41 (all entrants)
Winner index
3 (0-based)
Draw executed
11 Aug 2026, 8:35 PM
Entropy source
secrets.SystemRandom (instant-win positions at setup)
Fairness mechanism
SHA-256 commit-reveal — selection by sha256(draw_secret:pool_hash:counter) with rejection sampling

How This Result Was Produced

4 steps, each one checkable against the values published below. Nothing here depends on trusting us — every input is shown.

Verify commitment was published before the draw

This sha256 hash was published when the competition was created. It proves the draw_secret could not have been changed after tickets were sold.

79cbffdc19b4f573a9547bc3ca0ece9711154ca1e24d9c4949bc06b75cfffcfa

Verify draw_secret matches commitment_hash

The draw_secret is revealed below. sha256(draw_secret) is shown — it must equal the commitment_hash in step 1.

draw_secret (input)

0eb7717be87346aa352a2d6a7b6f386e40f92a9d1114e272ae86cab81208c8be

sha256(draw_secret) must equal step 1

79cbffdc19b4f573a9547bc3ca0ece9711154ca1e24d9c4949bc06b75cfffcfa

Verify the entry pool hash

sha256 of every ticket number in the draw pool, in ascending numeric order, joined with commas and no spaces. Instant-win tickets in this competition were settled at purchase and are not part of the main draw pool.

378b98c4100cb6fc0fc08d03fc948e59c33ca496437ed37f75ead3498c4b0725

Reproduce the winner selection (rejection sampling)

Starting at counter=0, compute sha256(draw_secret:pool_hash:counter) as a 256-bit integer. Let limit be the largest multiple of N below 2^256. If the value is >= limit, increment counter and retry. Otherwise winner_index = value mod N.

counter=0, winner_index=3

Check It Yourself

Run every check in your own browser. It recomputes the hashes and the winner selection locally from the values published on this page — nothing is sent to our servers, so a pass cannot depend on trusting us.

  1. Confirm sha256(draw_secret) equals the commitment hash in step 1.
  2. Confirm the sha256 of the entry pool below equals the pool hash in step 3. Hash the text exactly as shown — ticket numbers in ascending numeric order, separated by commas, with no spaces and no trailing newline.

    Entry pool — ticket numbers in ascending numeric order

    2,7,8,14,21,25,43,50,52,56,59,64,69,74,90,97,101,117,122,130,132,133,147,149,150,155,164,166,174,179,186,200,201,222,223,227,232,239,241,242,247
  3. Run the pre-filled command below to reproduce the rejection-sampling winner index (counter=?, expected winner_index=3). 
    python3 - <<'PY'
import hashlib
draw_secret = '0eb7717be87346aa352a2d6a7b6f386e40f92a9d1114e272ae86cab81208c8be'
pool_hash = '378b98c4100cb6fc0fc08d03fc948e59c33ca496437ed37f75ead3498c4b0725'
total_entries = 41
counter = 0
limit = (1 << 256) - ((1 << 256) % total_entries)
while True:
    seed = hashlib.sha256(f'{draw_secret}:{pool_hash}:{counter}'.encode()).digest()
    candidate = int.from_bytes(seed[:32], 'big')
    if candidate < limit:
        print(f'counter={counter} winner_index={candidate % total_entries}')
        break
    counter += 1
PY

Full Entry List

All sold tickets with entry method and optional-question answer status (no personal names). Download it to cross-reference ticket numbers against the draw pool; the "In Main Draw" column marks which rows formed it. Instant-win tickets in this competition appear here too — they were settled at purchase and are not part of the main draw pool.

Download entry list CSV

Independent Timestamp Proof

Each commitment hash is anchored to the Bitcoin blockchain via OpenTimestamps. A confirmed proof establishes the hash existed before the Bitcoin block that attests it — checkable without trusting our records. Save the commitment hash to a file and check the proof with the free ots tool: printf '%s' 'COMMITMENT_HASH' > commitment.txt && ots verify -f commitment.txt proof.ots

Draw commitment — anchored in Bitcoin 5 Aug 2026 02:05 UTC

79cbffdc19b4f573a9547bc3ca0ece9711154ca1e24d9c4949bc06b75cfffcfa Download OTS proof

Instant win commitment — anchored in Bitcoin 5 Aug 2026 02:05 UTC

e8f84ff78c1dd22c385c9cd9575818ce3ec553c23e0f87c13c9737629812125c Download OTS proof