Bitcoin Cryptocurrency Development

How to send a 100KB OP_RETURN?

I’m trying to send an OP_RETURN transaction, and the program says that I can’t do it because it is over 80 bytes. I would like to send a transaction using OP_RETURN that stores data. There is a site called, but I can’t use it because I want to use the testnet.

Note: I know that this is bordering on off-topic, but it makes sense and is related to bitcoin. I want to ask how to send an OP_RETURN that large easily, and I think it would be applicable to bitcoin SV too.

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