Hi I am trying to create a open source Bitcoin ATM. I have all the hardware that I need and now I am trying to find out how the software can be work out.
I was thinking that a raspberry could have a bitcoin wallet that when a condition is met will send a amount of bitcoin to a address. I found blockstream
https://www.blockchain.com/api/blockchain_wallet_api it seems to works for me but I would like to find out what else could help me. but I found this article that have a lot of different api.
https://applikeysolutions.com/blog/10-best-blockchain-api-providers-for-developersWhat are the main differences?
Does this api create with a secure way my private key?