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We built a lottery where the winning numbers come from Bitcoin blocks \ stacker news

A few months ago we started asking ourselves: what would a lottery look like if you removed all the trust? No random number generators controlled by operators. No black-box draws. No "take our word for it." Just Bitcoin. So we built The Daily Thunder. How it works Every 100 Bitcoin blocks, a draw happens. The winning 8-digit number is derived from the block hash of the draw block. Nobody picks it, nobody can manipulate it, nobody even knows it until Bitcoin mines that block. How we do it: Remove all letters (a-f), keeping only digits (0-9) Take the last 8 digits as the winning number Match the numbers from the right side Example: Block hash 00000000000000000000a2169fd41c2589f17ac39ae0d31f85af (4) (3) (0) (0) bb (0) (9) (1) ee (1) Results in: 43000911 Players pick their own 8-digit numbers and pay 1 sat per number over Lightning. When the draw block hits, we match digits right-to-left against the block hash result. Match the last digit, you win. Match more, you win bigger. All 8? You take 55% of the entire prize pool. The 7-tier prize structure 8 digits matched: 55% of the pot 7 digits: 20% 6 digits: 10% 5 digits: 5% 4 digits: 4% 3 digits: 2% 2 digits: 1% No winners? The entire pot rolls forward to the next round. Nothing gets skimmed. We only take a 14% fee when payouts happen. If nobody wins, we make nothing. That keeps our incentives aligned with the players. Payouts are automatic Winners get paid directly to their Lightning address. No claiming process, no withdrawal requests, no KYC. The system resolves the draw, matches the numbers, and sends the sats. Usually within minutes of the block being mined. Everything is public Every round, every bet, every payout, it's all on our public /activity page. You can verify which block was used for the draw, see the hash, check the derived number, and confirm who won and how much they received. Today we have 280 rounds completed. 1,211,179 sats paid out. Running since block 909,801. We're not asking you to trust us. We're asking you to check. What's next We recently added partner widgets, if you run a Bitcoin-focused site, you can embed a branded version of the game and earn a commission every time your audience plays. The attribution is permanent: once a player comes through your widget, you earn on them forever. If you're curious: https://playtdt.com We're happy to answer any questions in the comments. [14 comments, 3500 boost]