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eCash Founder David Chaum Makes Bold Promises with Elixxir Blockchain


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  • 2 weeks later...

Code review complete and ChainBridge migration processes ready... we are close now! :dance4:

https://medium.com/chainsafe-systems/sprint-toward-mainnet-83937c3e619

@brianwalden – Yeah sorry dude, I think the USA has been blacklisted due to the regulatory nonsense happening there right now. Maybe you can find a way around it with a VPN or something... sorry. 

 

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30 minutes ago, thinlyspread said:

Code review complete and ChainBridge migration processes ready... we are close now! :dance4:

https://medium.com/chainsafe-systems/sprint-toward-mainnet-83937c3e619

@brianwalden – Yeah sorry dude, I think the USA has been blacklisted due to the regulatory nonsense happening there right now. Maybe you can find a way around it with a VPN or something... sorry. 

 

I don't need to get in on the original sale. At some point when things are running I assume it'll be tradable somewhere.

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This is cool.

https://xx.network/blog/MainNetGeoBins

Quote

As MainNet launches (on November 8th!), bins will take on a new role in the tokenomic process. As a protocol, cMix gets faster the lower the latency between the nodes in a team. In other words, as nodes get closer, they complete cMix rounds faster. And as rounds are completed faster, the nodes in them earn points faster, resulting in more xx earned for operation (You can read more about the point system in the Era Rewards - Era Points section of the xx tokenomics paper).

The problem with this system is that as nodes get closer they make more xx.. This creates an economic incentive to centralize, and if we are not careful, we could find all nodes in a datacenter in Frankfurt Germany in just a few years.  

To combat this, each bin will be assigned a “regional multiplier”which will multiply the point value of the round for all nodes in it. They are expected to be small, on the order of 1.1 to 1.4, but will ensure that those higher latency nodes who are so valuable for decentralization, are incentivized to remain in the network and that nominators are incentivized to stake them.  

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  • 2 weeks later...
  • 1 month later...

https://xx.network/blog/ddos-defense

Updating the xx network to protect against DDoS attacks (and an urgent xx network MainNet update)

Quote

The Problem

Most privacy systems have a fairly poor time against DDoS attacks, specifically attacks that send an overwhelming amount of ostensibly valid traffic into the system. The underlying issue is that anonymizing traffic is very expensive (both computation and bandwidth). In most efficient privacy systems, it is much more expensive for the system than the submitter. This asymmetry can be exploited to easily overwhelm the system with traffic, ensuring it is not available to those who want to use it.

Overall, the xx network is uniquely situated to solve this issue. Due to the integration of a blockchain with the cMix mix network, the xx network can use economic incentivization (i.e. paying for sending messages with xx coins) to ensure cost for usage of the xx network is homologous with the work the network puts in. You can read more about this system in the xx network white paperin the section, “Postage”. 

This solution has 2 issues:

  • The systems to pay for usage of the mixnet are not yet in place
  • The system needs to have a free tier to allow general availability of untraceable communication.

The second issue ensures that even when deployed, economic incentivization is not sufficient. The moral imperative of universal access to privacy (for example through the xx messenger) demands a significant level of free usage be publicly available. As a result, another solution must be found.

The Solution

This is a particularly difficult problem, and solutions like mini proofs of work on send seem to work, but only create burdens in the thousands of USD a day to overcome and saturate the network.  

After spending significant time on this problem, we have settled on a solution based upon the scarcity of IPv4 addresses.  This is not a fool proof solution, and would likely be overcomable by nation-state level adversaries at the scale of the xx network currently, but we believe it to be effective against most adversaries the network will face in the near future.

[...]

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