To celebrate the launch of our Bitcoin blockchain verification feature, we gave away 0.0128 BTC (worth around $100 USD at the time of writing.)
The Bitcoin Treasure Hunt was a puzzle with 10 questions, including some programming challenges. If you got all of the answers correct, the result was the private key for this Bitcoin address: 1FormAP1qhonAfJToRfYZG9QtNeMFxsurL
The puzzle went live on Friday, 24th November at 12:30pm PST, and the winner created their Bitcoin transaction at 2:40pm. The Bitcoins are no longer available, but you can still try to solve the puzzle!
We've written a blog post with all of the answers. This repo contains the code mentioned in the blog post.