Re: [SDC] The Shadow Project | Anon POS | Ring Sigs

Update: Tuesday, 20 April 2015

New ShadowCore Client Now Available For Public Testing

Our development team has been hard at work integrating new features into ShadowCore that will better support our upcoming ShadowMarket. In order to best support a P2P marketplace environment the ShadowCore client has been updated to prepare the network to switch from using Proof of Stake to Proof of Stake v2. PoS v2s revised coin weight calculation encourages greater network stability by not factoring in coin age. Therefore saving up coin age is no longer possible so nodes will need to be online more in order to get their stake reward. It'll involve a move from scrypt to SHA256 which will mean staking requires less processing power (especially helpful for mobile users wishing to stake their coins). The new system is also designed to solve security issues which made PoS v1 coins open to certain theoretical attacks. For more information see Blackcoin's Proof-of-Stake Protocol v2 white paper.

Great news, thanks!

So how will some wallets using SHA-256 while some others are using Scrypt on the same blockchain affect things? It seems to me like the two algorithms would be at war with one another, with one not accepting the solved blocks of the other.

Once testing is finished and the hard fork is complete everyone will be using sha256 for PoS until then it remains as-is...

OK so to clarify, there will be a mandatory upgrade, the Scrypt wallets will be staking before a certain date, and the SHA-256 wallets will be staking after that date.

Now for a tech question, let's say a group of people chose not to do the upgrade. I assume they would be on their own, their wallets would still communicate with each other, and they could still trade their coins among one another, but not with the chain that the SHA-256 wallets are using, is that a correct understanding of forks?