Chain

Chains are metallic decoration blocks.

Natural generation
Chains will generate in bastion remnants and sometimes in ruined portals.

Placement
Chains do not require a supporting block to be placed, can exist completely free-standing and can't be rotated.

From block loot
Chains can be mined using any pickaxe. If mined without a pickaxe, it drops nothing.

Info
Chains can be used to suspend lanterns (alongside their soul fire variant), and the chain texture connects to the chain of the lantern seamlessly. However, bells cannot be attached to chains, despite the fact that they fit otherwise via and other methods. Chain also can't be destroyed when pushing it with piston, the chain was changing place instead. But how chains react with water, the result is still unknown.

Breaking
Chains require a pickaxe to be mined, in which case it drops itself. When mined without a pickaxe, it drops nothing. Unlike other metallic blocks, chains can be mined with any pickaxe instead of stone tier and higher.