There are at least three artists under the name Heavy Chains:

1) Jersey Shore Hardcore
Demo at http://heavychains.bandcamp.com/

2) Canadian hardcore band from Vancouver with members from Nü Sensae, Mutators and White Lung

3) A thrash metal band from Heredia, Costa Rica. Their music is found on Bandcamp. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.