Copper Ingots are a new item that are planned to be added in the 1.17 - Caves and Cliffs update. Copper Ingots can be obtained by Smelting Copper Ore in a furnace. They are solely used for decoration and a few tools. Copper Ingots were first announced in Minecraft Live 2020, alongside Copper Ore, the Copper Block and the associated slab and stair variants.
Copper Ingot – Minecraft Wiki
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Copper Ingot, Minecraft Wiki
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