EDIT: I was doing more research and I read more about Ardor, in which I saw that Ardor claims that their child chains ARE secured by the main chain and that those who create child-chains do not have to worry about security. How does that work?
I looked up ardor, searched around for a few minutes.
1. How are you going to make this child chain? I only found information which says "Contact Jerulida, and file an application."
That sounds hilariously centralised, but it makes sense because :
2. Your child chain is only some sort of partially mirrored chain on the main chain. When a transaction happens in your child chain, it's technically validated by main chain nodes. Your blocks are blocks created on the main chain, and so on.
You can even transact coins between different child chains.
You can read :
https://www.jelurida.com/child-chains-and-side-chainsSo to sum it up, if you only want your own blockchain, to be able to create your own transactions, peg the coin value to another one, and not worry about node security, sure, you can make a child chain of this ardor. From what I read, your child chain is secure because ardor nodes keep the utxo and the blockchain of your child chain, but it gets pruned by default after n blocka, unless the node wants to keep the full history of your child chain on purpose.
51% attacks are reduced because your child chain blocks belong to the main chain. All the nodes are not technically just holding txes for you, but for every child chain.
The weird concept is how centralised this is.. you can't create a child chain unless you ask jerulida, and they create the sidechain for you, and have the nodes start storing your txes. I couldnt find anything about the "how" that works. But thats as far as I'm willing to go.
I dont want to use or clone Ardor, I was just showing them as an example that its possible to secure a side chain from the main chain. I actually want to side chain Stellar.