What should I specify in the Remix IDE? _mint 10000 NFTs

Yes I use openzeppelin

Hereā€™s what I found:

The OpenZeppelinā€™s ERC-1155 token also implements the _mintBatch() and _burnBatch() internal functions in a similar manner, although the ERC-1155 standard does not specify them.

source

Could it be that OpenSea simply does not recognize the principles of batch minting?

Iā€™m just trying to find any examples where people use _mintBatch, it seems Iā€™m not looking hard because I canā€™t find any good examples.

It may be a different problem. I would expect opensea to parse the events.

All in all good, I will take your advice and wait maybe OpenSea will see my contracts in time. Thank you for your help.

People have used _mintBatch so it shouldnā€™t take long. You can post your collection if itā€™s still not showing properly.