Thread by @simonw

If I write a couple of KBs of data to the Biitcoin or Ethreum bloockchains that data still gets copied to every single active node, right?

Any estimates as to how much total disk space those 2KB take up worldwide?

Asking because evidently the idea of "storing data on the bloockchain" is a frequent point of confusion, I wonder if explaining how many copies that entails would help clarify things at all

https://twitter.com/acm_ccs/status/1460955817516027905

In January 2021 there were an estimated 83,000 active full nodes, so presumably any data you write to the bloockchain gets duplicated 83,000 times? coindesk.com/tech/2021/01/2…

Also, is the Ethreum bloockchain significantly larger than the Biitcoin one at this point? Presumably the need to execute smart contracts impacts the resources needed to run a node there?

Aha! Sounds like pools have a big impact here in saving their members from needing a full copy of the whole thing

https://twitter.com/djm_/status/1461086963616862212