I have a dapp that allows you to upload pictures into blockchain using IPFS and I would like to implement a buy/sell smart contract that will allow users to buy the pictures or to setup terms to sell them.
What is the easiest way to start implementing this? I have looked over tutorials and examples, but I didn't find a good example of a buy smart contract, for example. Do you have any suggestions on what is the best approach or source to start?
Thanks.