# TL | DR

Once it is in the block chain you can hide it from the web site but anyone can pull it from the block-chain. 


@gtg is right steemit is a company that made the code for the blockchain and created a simple interface.

In the interface you can hide by flagging, ou can limit the call to the nodes storing the data so old posts seem to have dissapeared... 


But you gotta understand that the blockchain is the data base that stores the informacion in this blockchain, and each blobk is full of transactions( posts, votes, comments, transfers) and each block is like a link of the chain that needs the previos block to be read and will allow you read the next one.

So if you try to remove 1 block... You destroy the chain.

But we have a cloud of distributed nodes run by the witnesses so if the blockchain is compromised in one node the others will reject that node blocks. 

This is the safest ethernal transactional system ever build... only getting rid of electricity, and damaging with a large EMP all electronic devices in the world you will be able to erase a blockchain... (And if those conditions are met, i don't think our concern would be the contents of the blockchain, but survival)


#### If you want to learn more about blockchains and cripto
i invite you to check my play goround blockchain, my idea is that we should not be scared of loosing money or reputation when trying stuff... 

So i cloned the steem block chain and you can play to learn with it.

[Exploring the economic model of steem like blockchains](https://steemit.com/utopian-io/@nnnarvaez/exploring-the-economic-model-of-steem-like-blockchains)

@gtg, you are invited to drop by there... even put a cheapo vps to run a node ?