Verify draw
We lock a commitment hash before close. After close, we use the next Bitcoin block as randomness and map the result onto the frozen ticket list.
Verify this draw
Product #503807 — Untitled draw
How it works Unknown
Three simple steps. If any of these change after the draw closes, the draw would be invalid.
1) Locked commitment hash (published before close)
This hash is fixed before the draw ends. It cannot be changed later.
2) Ticket list is frozen at close
We freeze the exact ticket numbers that are in the draw. That frozen list is what we pick from.
3) First Bitcoin block after close provides randomness
We combine the next block hash with the commitment hash, take a remainder (modulo), and use it as a position in the frozen list.
Draw details
Status
unknown
Draw closed at (UTC)
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Anchor block
Height —
Hash —
Hash —
Commitment hash
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Tickets in frozen list
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Confirmations
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Winning ticket
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Tip: we show a sample above for quick transparency. The full list is downloadable (CSV/JSON).
The recalculation tool loads the list only when you click “Load”.
Technical document — draw mechanics (PDF)
Formal, code-aligned description of the commitment, anchoring, and winner selection.Recalculate (try changing hashes)
Rule used: remainder = sha256(block_hash || commitment_hash) % tickets → winner = frozen_list[remainder]
Helper: counting starts at 0. (So remainder 0 means “first ticket in the frozen list”.)
Modulo (remainder) example: 100 ÷ 16 = 6 remainder 4 → winner position = 4
Remainder (winner position, 0-based)
always between 0 and tickets−1
always between 0 and tickets−1
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of —
Winning ticket from frozen list: —
sha256(block_hash || commitment_hash): —
Remainder value: —
Result verified? You’re welcome to join the next 21 Stacker draw.
View current draws →