Checked reel · 4 Nov 2026
Bitcoin Puzzle 71 has over 1 sextillion possible keys, and running this in a browser on a normal laptop GPU only tests a few million keys per second. At that speed, the average time to guess the right key is over 5 million years. The site creator even built it as an educational tool and called it the world's worst lottery because a single gaming GPU has an expected solve time of 830,000 years. It is a neat browser demo, but framing it as a realistic overnight payout is clickbait meant to get people commenting for his referral link.
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