Mathgate

Not counting the extra group theory problems, 8 people took part in the treasure hunt. Here are the list ranked by number of problems solved. Clicking on the address gives a PGP signed certificate (by my public key) indicating that the owner of the address participated.

1. 1MGb7YbEoHpBwvDtWpXZxxdnQvTrLXeZdd: 218 problems solved, approximately 2660 mbits claimed.
2. 1GQtYh4okefJKHf6hjj4wQY1638jdS8Mnp: 104 problems solved, approximately 859 mbits claimed.
3. 1Fv86iz25JBmaDKxC9VBXwHj3d8mhXoBuo: 30 problems solved, approximately 167 mbits claimed.
4. 17Ka6d26amrfnbHQAP5Fv2xmCjpG8H6WUy: 18 problems solved, approximately 1321 mbits claimed.
5. 19brLUpo6kV7erdvqjxdBK5KyXXqy6kL4i: 10 problems solved, approximately 52 mbits claimed.
6. 1695SHjDFwKpttZMU2HWb313g1echQkyEC: 8 problems solved, approximately 124 mbits claimed.
7. 1GdMi2Qt6zeLeniHoKxyVmXEMyLuG7aaF9: 2 problems solved, approximately 2 mbits claimed.
8. 1QDciDCbRAF2dRf1cwNvvgXvQq72Hg6eSL: 1 problem solved, approximately 10 mbits claimed.

Three other participants solved 4 of the "extra" 7 group theory problems:

13eTCGuu6dH7fkSfQQDaq9AYAhhpQYrJ7v solved 2 of the group theory problems.

12VTC6QB8Gd3tQy5oKr7FnvY7uK8jCZphq solved 1 of the group theory problems. I gave some (public) help in a reddit thread.

16HvHkZvBxZTmENBFk1y7KDconKm3J2yQR "solved" 1 of the group theory problems by cut-and-paste. I had publicly posted the solution on the same reddit thread in an attempt to spark some interest in the treasure hunt.