Program = Smartcontract

Accounts:
 - data in the blockchain lives in an account
 - everything is in an account e.g. smartcontract in its binary form
 will be in an account
 - an account needs to be owned by a program. This is not ownersip in
 the sense of possession the private key. Holder = human accessor of private
 key. Ownership is only in regard to programs
 - accounts are charged rent to remain on the blockchain to avoid
 clutter. Can avoid rent by having minimum balance of lamports on the account

Compute Limit
- limit of compute units for what can do in the smart
contract. Program will fail if it runs out of compute units