You know what I have been pinging around in my noggin, though it's baseless and does not really make sense.
Why did XMR prophesy bitcoin's breakout. I mean it could be a coincidence. Probably is really... But I am just trying to think... why could it be, and why now.
I mean even in a more general sense... why did XMR have such a nice parabolic run.
Hmm.
I used to say 'honeypony don't give a fuck' but in all honesty Monero has a sort of history of blowing up at an opportune time.
It did have some seasonal bursts or ebbs and flows for a while, but from mid-2016 it really ripped up - at one point it had clocked up an annual growth of 2,600%.
It reached its peak in dollar terms IIRC after Bitcoin had peaked, in spring 2018.
So it pre-dated Bitcoin's massive run then... and it does look like a similar pattern now. We have no idea if it would have done it in 2013, as it didn't exist back then, but the last big run was huge and looking at its aftermath up to now, I have been wondering too.
Looking at the 2018 decline, post the 2016/2017 explosion, it just looks like a huge curved bowl, or perhaps (dare I say) a cup. It is obvious Monero has been on the rise, but possibly this is just a continuation of the cup shape and we are - so far- only in the early stages of completion.
Hopium, or plausible? It's early to say, but the signs as you point out are there.
There is no four-yearly halving in Monero's code, but it may just be it does react to Bitcoin's cycle in a rather wonderful way. Gaining against Bitcoin when Bitcoin is gaining against fiat is a seriously wonderful thing.
It can be argued that Monero looks like it wants to do it again - and (again) wants to get started early...
They say history doesn't repeat itself, but....