Hanging a 100lb Heavy Bag

I got a great deal on Craigslist for a 50 lb punching bag. After repacking it with another 50 lbs of sand, I needed a secure way to hang it. I bolted a 2x6 across three ceiling joists. Then, I bolted four Husky anchor points to the 2x6 and the joist above it. Each anchor point has a 300 lb working load limit and is attached with two bolts. Since my bag already had hanging straps, I reversed my chains so the four hooks connected to the anchors and the single hook connected to the spring and bag.

The rest of the 2x6 will be used to attach a pull-up bar.