Should increase/decrease token supply on transfer to/from 0x0?

Question

I am about both ERC-20 and ERC-1155.
Should totalSupply be increased/decreased, when:

transferring to 0x0?
burning an amount already placed at 0x0 address?

By the way, should 0x0 be allowed to have non-zero balance?

goodvibration · Answer

For ERC-20:

transferring to 0x0? - No, totalSupply shouldn't change upon transfer
burning an amount already placed at 0x0 address? - Yes, totalSupply should decrease upon burn (though I'm not sure how exactly you are planning to trigger that to begin with)
should 0x0 be allowed to have non-zero balance? - Yes

For ERC-1155, I believe that all answers are the same.

Should increase/decrease token supply on transfer to/from 0x0?

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