SteemPeak has been releasing a lot of new features lately. It is a beautiful client side interface with the Steem blockchain and -for those of you interested- it also allows you to claim Steem-Engine tokens.
One other change they have introduced is the way they signal for the clearing of notifications. Now, every time you decide to mark as read all the shown notifications, a new transaction will be broadcasted into the Steem blockchain.
I could be writing here about the privacy problem which that change implies, but in this post I am focusing on the pure blockchain-wise point.
Steem allows to broadcast transactions. The blockchain offers some native ones. When you post -comments are just a special kind of post-, vote/unvote/downvote some content or claim some rewards, your client must broadcast a transaction which would be recorded on the blockchain. All of those native transactions are been taken into count by the blockchain in order to calculate the rewards. Some native transactions can also record additional custom data which is stored along the transaction -the meta-data-.
Steem blockchain is also offering the capability for clients to create custom transactions. If you explore your account in any Steem block explorer, you will notice lots of custom transactions. They are broadcasted by dapps like Steem Monsters -or however it is named now- or Holybread. Those transactions are needed in order to allow users to progress on the dapp. I find it a good usage of Steem blockchain resources.
This one, although a distributed data storage attempt, could be justified because a transaction for a new quest would require this transaction on the screenshot to have been recorded previously on the blockchainHowever, when you ask @steempeak to clear your notifications, that will trigger a new chain transaction. That transaction is not needed in order to allow the user to progress on the dapp. No future transaction will be referencing to it, which is the way blockchains are meant to work.
Most blockchains use the UTXO model, which creates a new transaction in order to spent older ones. Others -like Ethereum Classic- use an account model, instead. But in all of them a transaction should only be considered valid if there was another one previously which justifies it.
What SteemPeak is doing here is just using Steem as a way to store data which won't be referred at a later time.
Of course, they can do whatever they wanted, but I do have an opinion on it, and I do have a place to express about it. That's to mean: this is just my own opinion. I could be wrong and I am open to learn about it.
Thank you for reading.