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 2×6 across three ceiling joists. Then, I bolted four Husky anchor points to the 2×6 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 2×6 will be used to attach a pull-up bar.