![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgflip.com%2F2y37af.jpg&t=669&c=yi47k1l5N9lTNA)
For reference, Bitcoin Cash vs Bitcoin. 🔥
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgflip.com%2F2y37dz.jpg&t=669&c=VkLIm62GN1Y5eA)
https://twitter.com/jacobcanfield/status/1114928230635659264?s=21
Transaction spike is probably due only to Veriblock spamming bitcoin blocks with their OP_Return transactions.
This is even suggested on the commment to the original tweet you posted.
I said something about that in my monthly analysis, but basically they are doing transactions on BTC blockchain, effectively using space on BTC blocks, and using their own protocol (Proof-of-Proof) trying to secure other weak blockchains (say a random shitcoin with low hashing power) using Bitcoin's Proof-of-Work blockchain and its massive security to protect them against 51% attacks. As they put transactions from other blockchains on the Bitcoin network, that takes space in a Bitcoin block, some estimates say up to 25%, crowding out legit BTC transactions and pushing fees higher.
This is only a quick and dirty explaination, more at www.veriblock.com.
Edit: now I really regret getting so excited about this spike a couple of days ago...