Topic: [JBS] Jumbucks - No IPO/ICO - Proof of Stake - Slack - DCR Stake Pool - 2+ Years - page 3. (Read 48244 times)

Exponentially Subjective Scoring & Entering the final phases for Launch

So here's something I alluded to in a previous post. I wanted to take a look at eliminating the possibility of a long range re-org attack on the chain as this has been observed in other Ethereum forks.  Ultimately the best security for proof of work is having "sufficient" hash rate such that such an attack reaches the point of "not being feasible." The first idea I had for this was setting a limit on re-org depth, say 1 day. This solution on the surface seemed simple.. a little too simple so I sent Vitalik an email to see if he had any thoughts.

Here is Vitalik's reply:


Exponentially Subjective Scoring is also further mentioned in this article that Vitalik wrote November 2014 - https://blog.ethereum.org/2014/11/25/proof-stake-learned-love-weak-subjectivity/

I'm pleased to say that I have coded this up and it works great. Here are some log lines which demonstrate this. ESS is basically another check which decides whether or not a re-org should take place.


The above lines are additional debug lines which I which are from a live test I did on the Testnet.  It's slightly confusing so here is a re-written version in Go which outlines the function using the exact figures from above.


The output is as follows.


This code change actually took a bit longer as it required a lot of testing and learning how Ethereum handles new blocks being processed and the different scenarios. i.e. had to run through a lot of the following cases:

1 new block comes in
2 new blocks come in
3+ new blocks come in
1 new mined block pushed out the network
2 new mined blocks pushed out to the network
3+ new mined blocks pushed out the network

So most of the work was actually figuring out how block processing works and testing the scenarios and thinking more about "when should this be checked?" and further thinking of other cases where it could go wrong.


So just to re-cap JBSEE will come out with 2 new consensus level changes.  These are:

Exponentially Subjective Scoring - A deterministic scoring system when comparing two chains. The longer the reorg, the higher penalization, and the less likely the new chain will become the main chain. It is more expensive to attack a well publicized good chain.

Rewritten difficulty algorithm based on Digibyte's Digishield V3 - Difficulty algorithm that is battle tested on numerous coins and is far better suited to longer block times and fluctuations in hash rate.

It is also worth noting that no other Ethereum fork has the level of new code and consensus changes that the JBSEE network will have.


Here are the priority items in the next few weeks. It is a tight deadline but we are aiming for a launch of the network before October 11th next month.

Launch of new coin

All the technical details set and we are co-ordinating with exchanges.

PRE-ANN thread

The details are being written up. This will be up shortly.

Swap system

This has been outlined in a previous post and will again be outlined in the PRE-ANN. The sites for a non-exchange swap are being completed.

Code modifications

These are complete for the launch. We are also thinking of paying a Geth dev to code review the new code changes I have made just to have another pair of eyes go through the code.

Logo and branding

The new logo and name has been chosen.

that's nice, dear

well i seen some down movement making it interesting to make good entry position before the completion. good luck dev.

Hi,

This post has more details about the swap.

https://bitcointalksearch.org/topic/m.16213876

The main code developments to the fork are complete.

Entering final phases now.

Thanks,
Julian

To check up on the JBS-EE network, visit http://jbs-ee.sigwo.com

hey will my jbs be swapped automatic to new chain if they are on bittrex ... and is there a date for that swap

Do not worry. Request has been sent. They are already working on it.

Why your exchange still don't conected to http://coinmarketcap.com/ ?

Specially for you.
Absolutely clean operating system.
The browser opens for the first time.

FireFox






Chrome

You have reached the page login?

As far as i can tell you do have ssl encryption but if a user goes to the page for the first time to crypto-trade.net it uses standard http. Then only after manually appending https the http>https redirection works. dunno. Tested on Safari and chrome btw

We use ssl.


Step 1 (The user tries to go to an insecure protocol.)
http://i68.tinypic.com/2qdu3pt.png
Step 2 (Automatic redirection to https)
http://i66.tinypic.com/2s0zqq8.png

Your exchange site looks like it's a scam and it doesn't run HTTPS.

We added your cryptocurrency.
With respect, the development team of Crypto-trade.
Crypto-Trade – Official Announcement https://bitcointalksearch.org/topic/crypto-trade-official-announcement-10-fiat-365-crypto-5300-pairs-1604225

This question has come up a few times.

Will JBS EE switch to 100% Proof of Stake when Ethereum's Proof of Stake Casper is released?

A switch to PoS isn't definite but we will evaluate and monitor Ethereum's Proof of Stake when it is released and had time to iron out any issues that may arise. A switch to PoS depends on the overall health of the JBS EE network and other factors such as ongoing distribution. It can make sense to just stay on PoW or a hybrid PoW/PoS network.

Another thing to factor in is that when Ethereum switches to PoS there will be excess mining capacity, so that can be another pro for sticking with PoW or a PoW/PoS hybrid.

I will be watching this pool like an eagle!

Hi Bitice,

You can keep staking until the swap.

Briefly there will be 2 methods for swapping. Claiming or using an exchange which will perform a claim and adjust on-exchange balances accordingly.

The off-exchange claim process will involve and consist of:

• Generating receiving address/addresses (a fork of the MyEtherWallet web site will be provided to generate addresses)
• An online form to enter JBS addresses mapped to a receiving JBS EE address
• This form will be provided in both clear net URL and TOR URL form to retain anonymity
• You will need to sign a message to prove ownership of the JBS address
• JBS address balances will be snapshot at a defined block. This prevents double claims
• JBS EE balances will be programmed into the Genesis Block of the JBS EE chain. Be a part of history!
• You will be able to perform a claim at a later date as well after the network has been launched. The intention is not to screw people over with a claim process with a short time window
• At some point we intend to send any unclaimed funds to a multisig address which will require multiple party approval to process any later claims

There will be further details in the upcoming PRE-ANN thread.

We intend to make this claim process as transparent as possible and it can therefore be audited on the blockchain

To maintain a healthy staking network we recommend people participate in the off-exchange claim process for the bulk of their holdings

You may want to consolidate some of your holdings to a smaller number of JBS addresses leading up to the swap

Hi ocminer. Thank you for the vote of confidence with your pool and suggestion.

I am looking into implementing a new solution for long range reorg attacks that Vitalik has suggested to me.

JBS i feel to be high price this week or this month. Dev still very active.
God Job Dev of Jumbuck $JBS

Those staking JBS at home will have to do.. what when this swaps to EE edition? and when, roughly?

Will it be easiest to send it to Bittrex and let them deal with it?