So, I got into an argument with a friend and we were discussing on scaling problems of the blockchain.
As the blockchain gets bigger and bigger, why don't we just save the state of the blockchain (by which I mean all the utxos) every year and hash the preceding blocks, so we know that this is the correct state and erase these blocks afterwards?

I have made an Android app for scanning Bitcoin and other cryptocurrency address QR codes and showing their funds. I would love to receive some feedback on the app functionality and feature requests. You can download the app for free on the PlayStore https://play.google.com/store/apps/details?id=com.walletwatcher .

If you are wondering what the use case for this app is:
When I started with Bitcoin I held my BTC and other crypto on a paper wallet. Since you shouldn't store your paper wallet on your PC, I needed a way to easily scan the address and view the funds, without having to import the Private Key itself, since this would compromise the security of the wallet. So I developed an app to do just that. You can scan your address with your camera and instantly see the funds in BTC, USD and EUR.
I have bought a ledger now and with the app I don't have to connect the ledger to my PC to see the funds, which also saves a lot of time.
A second use case is for all the curious people out there. If you happen to see a crypto QR code somewhere outside and wonder much money there is on that address, you can quickly scan the QR code and find out.

So, I have been discussing the Lightning Network and I could not counter one argument: The LN uses onion routing, so the sender has to know the exact path the transaction will go through. If the LN has 1 Million TPS isn't it likely that the available routes will have changed once the route has been calculated by the sender?

( Already posted this on /r/bitcoin https://www.reddit.com/r/Bitcoin/comments/8khx5g/question_about_ln_routing_at_1_million_tps/ but didn't get any answers. )

I have developed a website for Bitcoin and other crypto memes: https://coinhumor.com/

I would appreciate everyone signing up and posting or commenting on memes! If anything doesn't work, let me know about it and I will fix it as soon as possible.

I am looking forward to seeing your posts on my site!

Greetings!