So I've destroyed ∞ Terraria demon altars ─ What would happen?

Have you ever saw some weird purple teeth that's just glowing on underground? What about some weird looking eyeballs with red base? That's what is known as "Altar", or "Demon altar". Technically each one have their own name: Corruption variant named Demon altar, and Crimson one named... Crimson altar. Well, I just call both of them "Demon altar", or "altar". While they mostly seem harmless, except when you take a punch to that thing... And, get this: If you punch the altar with some really strong hammer, it might spit out really shiny ore!... Only if your world is in hardmode, that is.

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Chapters:
0:00 What are altars?
0:46 How do I destroy them?
1:22 Ok, what now?
2:12 The test begins...
6:43 Ore discovered!
7:56 ORE FOR THE ORE KINGDOM!
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[Outro/Custom song]
   • Видео  
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Most of the musics used on this video was either taken from video game, or copyright-free musics from Youtube Audio Library. The name of the musics will be mentioned down below.
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The mouth of devil vs The face of devil
Used Music:
-Terraria underground Crimson
-Terraria alt underground
-Terraria calamity: corrosion!
-Terraria Eclipse
-Terraria overhaul: Morning rain
-Terraria overhaul: Desert
-Terraria underground corruption
-Terraria otherworld: The endless void
-Terraria calamity: sanctuary (tempo up)
-[outro]
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I hope you have a great day, as always!
Thanks for watching, I guess.