I have a couple of questions:

1. is it possible to use -walletnotify on addresses I don't own? meaning addresses I imported as watch addresses.

2. I also want to know how many addresses I can watch until things start to get slow, or worst... the program start to crash?

or there are no limitations as long as the server i'm running bitcoind on is powerful?

Hi. Is there any library or even third party API that allows to initiate a transaction and send funds just by using private keys? I want a lightweight solution that doesn't require running a full node or downloading the blockchain.

i can see that chipmixer has an electrum plugin, im not interested in that but rather i want to know if there is a public api that users can use to automate their mixing process?

i've been doing a lot of reading about DeFi's lately, but i can't seem to wrap my head around rewards and where do they come from? at first i thought that rewards are given just like in proof of work coins, like btc so basically, if one stake a coin, he'll be getting rewards for helping the network, meaning from the blockrewards and transactions fees.

but i then came across some new coins like Swipe, which i'm confident that it does not generate that much in transaction fees, and yet the rewards are high? the coins in question are: Tezos, matic network, cosmos, swipe and ethereum 2.0.

i would appreciate any explanation. thank you