Nexus News

I have been having fun coming up with new ideas for T-Shirts, and I am looking for more... I am going to hand out 50 NXS to two people with the ideas I like best. Check out the Nexus shops created by me, @cirebla and @Arsène and enter the contest for your chance to win. Visit the site to enter with your best ideas.

T-Shirt Design Entry Form

My plan is to buy my coins and then go completely off the grid with numerous cold backups. No longer having a wallet.dat on my pc. I believe this coin is the next wheel and plan to hodl. I am wondering however if i could confirm, periodically, my wallet balance based solely on my wallet's address so I don't have any surprises. Maybe i am being paranoid here. I did however use a 15 character passphrase with numbers, letters and symbols so i would think it would be fairly difficult to crack even if my wallet dat file was stolen somehow. Just wondering...

I haven’t visited this sub in a while but I’m disappointed to see that Tritium still hasn’t been released, although being promised as ‘very close to being done’ around a year ago.

What’s happened?

If something like a wallet has been delayed by such a long time how can we ever expect the project to deliver on its promises for a decentralised internet?

EDIT: FML FEW MINUTES AFTER I WROTE THIS I CAN SEE MY GENESIS TAX AND 4K NEXUS IN STAKE!!!!

PUUUUUUUUUH will leave this thread here so you can remember how important it is to backup after genesis tx ! :D

Hello guys, sorry that this thread is maybe a little bit early but I feel like shit right now and my heart goes crazy...

To understand: I went 90% into nxs with my funds like a week ago and it's everything of value that I own in general - yes, I'm an absolute idiot and violated all safety rules basically.

So I bought 4k NXS and started staking, backed up my wallet.dat multiple times after sending them to my wallet.

1 day after I received the genesis tx my windows wouldn't start anymore and I backed up my disk but not everything and I am totally not sure if I backed up the newest wallet.dat or if I just backed up all the others since I didn't even know you have to backup the new wallet.dat after you received the genesis tx. But actually I think I copied the newest one too, 'just to make sure' I thought.

BUT: I can't see the genesis tx in my wallet right now - it still needs to sync 12k blocks though, it's very slow on the PC I am now and time won't pass... Also I saw those 6 txes already long time before I reached the block height for them so I'm worrying much that those 2 other txes won't show up and I only have the backup from before the genesis tx...

What I can see: 0 balance and the history from 6 of 8 transactions

the 2 missing transactions are the genesis tx and 1 trust tx (not sure ifthe name is right, I mean the stake reward tx)

But it shows me that there are 8 txes... does that mean the others will show up too?

If anyone could already tell me that I'd be so happy...

EDIT: FML FEW MINUTES AFTER I WROTE THIS I CAN SEE MY GENESIS TAX AND 4K NEXUS IN STAKE!!!!

PUUUUUUUUUH will leave this thread here so you can remember how important it is to backup after genesis tx ! :D

Nexus to build nodes in space

Elastos to build a new operating system

Hi,

I'm trying to stake without using QT, but I can't get it to work. What I tried :

• start the kernel " ./nexus -alerts -debug -printtoconsole -staking=1" (works fine)
• RPC command to unlock the wallet : "./nexus walletpassphrase PASS 0 true" (true as in for minting only, as seen in the help section)
• The RPC command appears to work, but staking isn't activated

If I do getinfo, can see that I have no staked balance. The chain is fully synced.

The result is always the same, regardless of trying it without "-staking=1" or even trying it using the command interface of QT

(If I try this too many times, I get Addkey failed errors, but replacing the wallet with my backup fixes that.

Any help ? I would really like to upgrade my rig to ubuntu server, no GUI :)

I am doing some research on the topic of quantum resistant blockchain projects. Nexus claims to be quantum resistant, so I got to their subreddit and had a conversation with their moderators. I came to the conclusion Nexus is not quantum resistant at this point of time, while they claim to be the first truly quantum-resistant blockchain. The discussion became an argument and my comments on their subreddit where I explain how they are not quantum resistant, are deleted or removed. Now I seemed to be banned or blocked there. They keep a tight censorship on the subject. They remove and delete posts they don’t like to be seen.

Their claim to be quantum resistant:

From the website:

“Nexus is the first truly quantum-resistant blockchain, incorporating advanced cryptography designed to negate the threat posed by quantum technology of the future.”

and:

Nexus “combines 571-bit private keys, 1024-bit Skein and Keccak quantum-resistant hashing algorithms, and an evolving signature scheme called signature chains. Signature chains update the private and public keys that secure your address and obscures them after each and every transaction”

This doesn’t make Nexus quantum secure though:

- Elliptic curve signature scheme cryptography as nexus uses, even 571-bit private keys, are known to be broken with a large enough quantum computer using Shor’s algorithm. So the keypairs used by Nexus are not quantum resistant. Meaning: if you would have a quantum computer, and the public key, you could derive the private key, and sign transactions of your own.

- Skein and Keccak are Hashing algorithms and useful to hash the on-chain public key. So they use the same method as BTC here, where the public key is only visible in hashed form as long as no transaction is made. Where, as long as no transaction is made, the public key stays safe from quantum attacks. But as soon as a transaction is made, these hashing functions are useless for protection, because while sending the transaction to the nodes, and during the transaction, the public key will be made public in it’s original form.

- The signature chains are pointless, because the vulnerable point is before the transaction is fulfilled. So the fact that you update the keypairs after a transaction is futile.

- Also the idea that there would only be a 1 minute window (The time it takes to include the transaction to the chain after the network starts process the transaction) to do the attack is not true. The attack will be done before the transaction is admitted to the network. Network based attacks, like specialized forms of Eclipse attacks, DDoS attacks, BGP routing attacks, NSA Quantum Insert attacks could create a much bigger window to create an attack and at the same time make sure the forged transaction will be admitted to the network before the original will be. The biggest threat will be MITM attacks though. No network modification would be able to prevent that, besides the use of quantum resistant keypairs.

To summarize why they are not quantum resistant:

Nexus uses 571-bit private keys which can be broken by quantum computers when they reach critical level. These keys can be hijacked when a transaction is sent from the users device to the blockchain network using a MITM attack. These attacks make it possible to 1) retrieve the original public key that is included in the transaction message. 2) Stop or delay the transaction message to arrive at the blockchain network.

So, using a quantum computer, you could hijack transactions and create forged transactions, which you then send to the nodes to be confirmed before the nodes even receive the original transaction. There is nothing you could change to the Nexus network to prevent this. The only thing they can do is implement a quantum resistant signature scheme. They plan to do this in the future, like any other serious blockchain project. Yet Nexus is the only of these future quantum resistant projects to prematurely claim to be quantum resistant.

Using the term “truly quantum resistant” is highly misleading. “Quantum resistant” is only used to describe networks and cryptography that is secure against an attack by a quantum computer in the sense that there is no algorithm known that makes it possible for a quantum computer to break that cryptography, in the way it is implemented, without any backdoors. They really should not advertise this way. It’s a misrepresentation of the truth to attract extra attention and investors. Being informed about this and then preventing this info from being public by removing and deleting comments is just scammy.