“In computer science there are fundamental trade-offs between security and performance. Bitcoin’s automated integrity necessarily comes at high costs in its performance and resource usage. Compared to existing financial IT, Satoshi made radical trade-offs in favor of security and against performance. The seemingly wasteful process of mining is the most obvious of these trade-offs, but it also makes others.
Thrombophilia (sometimes hypercoagulability or a prothrombotic state) is an abnormality of blood coagulation that increases the risk of thrombosis (blood clots in blood vessels). Such abnormalities can be identified in 50% of people who have an episode of thrombosis (such as deep vein thrombosis in the leg) that was not provoked by other causes. A significant proportion of the population has a detectable abnormality, but most of these only develop thrombosis in the presence of an additional risk factor.
In economics, Gresham's law is a monetary principle stating that "bad money drives out good". For example, if there are two forms of commodity money in circulation, which are accepted by law as having similar face value, the more valuable commodity will disappear from circulation.
as mining becomes harder the essence of a decentralized currency no longer exists as specialized, centralized data centers exist to mine certain coins. Mining is consolidating more towards these data centers, so while it is still decentralized due to number of data centers around the world, it is not as decentralized as it could be should a PoS algorithm be used to validate new transactions
No real sync exists like you mention exists.
The closest solution is what I and a few others do. Using a cloud replication service, such as Micorosft OneDrive, Google Drive, Dropbox....
You put the catalog, all pictures, and make sure to include preferences and plugins in the same base folder, in the replication service. Now, everything will be replicated between the computers. However, and this is a big one, you CANNOT open Lr on the second computer until replication has finished between both computers. Otherwise, your catalog can become corrupted and/or end up with duplicate conflicts.