If you scroll down the main page you can see most of the differences, but gonna give some of them
-To hack Nexus you'll need to make a 51% attack on three mining channels as this is a hybrid coin, this means uses proof of work like Bitcoin and 2 proof of stake channels to secure the network. Which makes it almost inmune to those attacks.
- Talking about security is the most secure coin out there, your private keys will be 571bit security, that is twice as secure as Bitcoin, but it uses Skein at 1024bit security and SHA3 winner Keccak at 1600bit for the hashing, that is 4 and 6 times as secure as Bitcoin, this is due to the development of more and more powerful quantum computers, right now the only crypto who has a chance to deal with quantum computers 10 - 15 years in the future is Nexus, Core developer and founder Videlicet is developing a hashing algorithm for Nexus called "Calculus Space Cryptography", if this issue is not addressed quantum computer will simply destroy all crypto with ease in a decade or so, Nexus is doing something about it.
-It will be the first coin in having reversible transactions, if you fuck up, you have a time frame to reverse it.
-Dev's father was co-founder of SpaceX with Ian Musk and now with his own company Vector Space will send cube satellites to orbit in 2-3 years with Nexus and Bitcoin nodes to broadcast the blockchain from space and provide free wireless internet for the world ( I know doesn't sound legit but check the page and sources, this is going to happen).
-Bitcoin tech is Single-Threaded, which means every task, transaction, messaging that happens in Bitcoin must wait in line its turn to be processed that is why everything with Bitcoin is SLOW, Nexus will be the first coin using Multi-Thread by the use of the Merkle Tree this way every area of the coin will have its on thread, kinda like your computer can handle different task at the same time.
-Bitcoin and other cryptocurrencies blocks are getting bigger and bigger which makes the blockchain very large and bloated, Nexus will make blocks smaller, if you want to know how this will be achieved, listen to the podcast, go to our youtube channel and its there.
- Until now there is no crypto capable of handling real world visa-mastercard volume, Bitcoin will try to do this by using the Lighting Network, Nexus wont need to rely on third parties to achieve this volume.
- Crypto transactions are cheap but as the coin gets more expensive the transactions as well, Nexus will offer free and instant transactions which will make it useful in real world beyond crypto sphere.
Short explanation in a few sentences? nope, hope it helps.
good points, BUT: you guys do not understand that 571bit is not 2x more secure than 256bit
it is much moooooooooooooooooooooooooooooooooooooooooooooooooooore than twice
