Here’s the port for the copper drop. Not many changes aside from things related to the drop.
Additions
More Copper Smeltables
You can now smelt down spyglasses, trial keys, ominous trial keys, and brushes down into copper nuggets.
Changes
Climbable Chains
You can now climb copper chains, just like iron chains.
More Undead Nugget Drops
Drowned now drop copper nuggets similarly to how zombies drop iron nuggets.
Horse Armor Improvements
Copper horse armor is now craftable and enchantable like other horse armor.
Wrench
Wrenches can now rotate all new rotatable blocks from the copper drop.
Miscellaneous Changes
Witches and ender dragons will now only drop one instance of their hat/head when killed by a charged creeper, similarly to other mobs that drop heads.
Download
This version is available on Modrinth.
Please follow the steps on the download page to properly install.