# Ethereum and Arweave

By [Emanuele](https://paragraph.com/@emanuele) · 2021-10-07

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So, turns out Mirror is a nice frontend capable to write onto two blockchains: **Ethereum and Arweave**. The first one is used as permanent registrar of the event (i.e.: a new post is published), the latter instead is the content storage infrastracture. The media or this text itself will be written on the Arweave blockchain.

I have to admin I did not know Arweave. I will have to study a little bit more how it works and how it is going to maintain the transactions costs as little as they are right now (_one single post is less than 0.0001$ to Mirror.xyz_).

In the end I have to discover **how Mirror is going to find the money to scale** all of this new system to a place capable to host thousand of bloggers.

I still have to understand what happens when I decide to **edit** my post (I saw you can do it). _Is the content on Arweave re-writable?_

If not, one thing would be amazing: you can kill the frontend but you cannot kill the content. This will be disruptive for _censorship resistant_ environments.

_Cheers._

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*Originally published on [Emanuele](https://paragraph.com/@emanuele/ethereum-and-arweave)*