New to Stellar so forgive me if this is not the smartest question, but are real lumens still required on a custom network? I would like to use the stellar blockchain for "transaction" validations but not for real currency exchanges. Only data points. Given the lumen reserves required for trust-lines and transactions, I am looking for a solution that would keep the need for real lumens to a minimum or remove the need for them totally.
Basically I want to do the following: Record "transactions" between two wallets. Will supply some data points (say a number, two ids and a time of the transaction). There would be multiple wallets so not the same two wallets every time.