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Author Topic: Citadel - BlimpHash-B PoW-CPU. CryptoNote-Based.  (Read 26537 times)
foRev_p2p
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February 08, 2019, 11:39:41 AM
 #141

Soon web-wallet will be released in 2 or 3 phases, Web version and iOS/Android ( mobile ones).

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foRev_p2p
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February 17, 2019, 10:20:03 PM
 #142

https://fcbaccount.com/account/exchange/BTC/CTL
https://fcbaccount.com/account/exchange/LTC/CTL
https://fcbaccount.com/account/exchange/DOGE/CTL

(CTL) coin market was added

More exchanges should follow.

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February 25, 2019, 10:03:09 PM
 #143

Web-wallet released on wallet.citadelplatform.io, as stated previously APK and IPA (Android and iOS) versions should follow soon.
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March 07, 2019, 09:11:08 PM
Last edit: March 07, 2019, 09:58:03 PM by foRev_p2p
 #144

Introducing Citadel rewards:

Citadel rewards provide infinite rewards for those who seek rewards forever.

Tier 1 Citadel rewards: 50000 CTL
Tier 2 Citadel rewards: 35000 CTL
Tier 3 Citadel rewards: 25000 CTL
Tier 4 Citadel rewards: 15000 CTL

What are Citadel rewards exactly?

A simple way to “vote” in the same way as a miner would do. Such implementation will ensure not only decentralization but also a “vote” by Citadel stakeholders on block reward and future supply, leaving the network less vulnerable to 51 % attacks while retaining proof-of-work presence.

Tier 1, effective 10,2 % reward forever.
Tier 2, effective 7 % reward forever.
Tier 3, effective 5 % reward forever.
Tier 4, effective 2,9 % reward forever.



Citadel rewards have a “cycle” period of 4 months.

We will also shortly introduce this type of rewards “on-demand”, meaning users with lower amounts of CTL are able to participate too.

Citadel rewards release will happen by the end of the month. Expect more information really soon.
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March 14, 2019, 04:23:51 PM
 #145

Citadel is seeking team members, if you feel you can help in anyway feel free to reach me in pm so we can discuss it.
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April 01, 2019, 10:46:52 PM
 #146

My CTL are still stuck on Cryptopia, any news or hope?
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April 23, 2019, 10:21:28 PM
 #147

My CTL are still stuck on Cryptopia, any news or hope?

I believe they are still working to "resume" all coins/assets hence possible.
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April 24, 2019, 03:38:42 AM
 #148

On SWIFT Network, Corda and the long night.

https://telegra.ph/SWIFT-Network-and-Corda-04-24
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April 26, 2019, 07:11:50 AM
 #149

A simple schematic on how Citadel functions in a simple way.

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April 26, 2019, 07:36:20 AM
 #150

A simple schematic on how Citadel functions in a simple way.
http://i65.tinypic.com/28wfh4o.png

Nice to get news from the project! Interesting schema Smiley
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June 05, 2019, 09:36:40 AM
 #151



Some Citadel important features.

Merged mining disability:

"Merged mining is the act of using work done on another blockchain (the Parent) on one or more than one Auxiliary blockchain and to accept it as valid on its own chain, using Auxiliary Proof-of-Work (AuxPoW), which is the relationship between two blockchains for one to trust the other's work as their own."

We do not "allow" it unlike other CryptoNotes, as we believe it may take value from the coin itself.



Zawy LWMA difficulty algorithm:

Difficulty algorithm proposed by Scott Roberts which solves the existing problems of default CryptoNote difficulty algorithm. These problems consist on 2 important points:


1. Renting Nicehash power during a short-period of time "hopping" to get almost all previous day blocks ( 360 in Citadel case).

2. Make it fair for "low power" miners. ( This is also enforced with 4 min block time )



51 % attack protection:

"Typical 51% attack on the cryptocurrency exchanges can be boiled down to the cancelling of the transaction during a switch to the alternative chain. To be able to cause a blockchain reorganization the malicious actor will need to gain control of more than 50% of a network’s hashrate, hence the name.

Put simply, the attacker submits to the network a transaction in which deposits coins to the exchange, while privately mining a blockchain fork in which a double-spending transaction is included instead or a deposit transaction is just absent. After waiting for n confirmations, the exchange credits coins to attacker account. He sells deposited coins and withdraws other currency. If the attacker happened to find more than n blocks at this point, he releases his fork and regains his coins; otherwise, he can try to continue extending his fork with the hope of being able to catch up with the network. If he never manages to do this, the attack fails, the payment to the exchange will go through, and the work done mining will also be wasted, as any new coins would be overwritten by the longest chain. [1]

The exchanges can require the large number of confirmations n, but if an attacker can continue to mine his alternative chain however long, this method will not protect the exchange. Nowadays, when there is available very large amount of hashrate for rent at attacker’s disposal we need better solution than just raise the n.

We propose the solution to disallow cancelling transactions during a switch to the alternative chain by adding the consensus rule stating that “an alternative chain should contain all transactions from the chain it is to replace”.

The protection against 51% attack will then look like this: in the case of a reorganization of the blockchain nodes compare transactions in the alternative chain and in the current main (their) chain and if at least one transaction is missing in their chain they reject the reorganization.

When this happens all missing transactions will be added into the mempool of the nodes proposing the alternative chain so they have chance to include those transactions into the next block then nodes on the main chain will reorganize to theirs chain and the reorganization will take place if their chain is longer. This allows to unite blockchain in the case of accident splits by the longest chain rule when it is not an attack or in the scenario where transaction is just missing from the attacker’s alternative chain.

In the case of contradicting transactions the nodes will endup in permanent chain split and will require manual intervention as both chains will reject each other because each will lack transaction from the other. In this situation the attacker will permanently lock himself in his alternative reality.

With this rule being effective if there is no contradicting transactions the blockchain can split and rejoin up to the length where the first transaction spending newly mined coins occurs, in other words, the reorganization length can be reduced to the mined money unlock window parameter’s value since miners can protect their chain just by spending mined coins as soon as they unlock. Therefore, to allow larger reorganizations this parameter should be set at reasonable value.

It can not be that simple though. Let’s consider the possible complications. The simple attack on network to cause chain spit can be conducted, let’s call it ‘split attack’: an attacker sends the same coins to himself via different nodes and if two nodes include contradicting transactions into different blocks they will go astray each in own chain. To mitigate such attack the comparison of transactions can be triggered not immediately when the reorganization occurs but if an alternative chain is longer than usual reorganization which is rarely more than 2 blocks i.e. after the ‘grace period’.

The introducing of grace period opens the way to bypass the comparison by ‘zakurai attack’ aka ‘lift to cancel’ attack: 51% capable miner can wait for n confirmations then do reorganization by reincluding transaction he wants to cancel into the last block then do small reorganization within the grace period in which transactions are not compared. It is possible to find out which transaction of contradicting ones was in the more premiere block but an attacker can include it into the earlier block in privately mined alt. chain than in the public chain i.e. it will first mine transaction in his hidden chain then send doublespending transaction to the exchange in the main chain in hope that we will take naive approach and select the block that appeared earlier. Therefore the ‘grace period’ method or selecting the chain where spending occurred first is futile. We know that an attacker spends coins in the public blockchain simultaneously mining a private alternative chain which he will try to impose instead of the public one. Therefore we should not give up public chain no matter what.

Trailing checkpoint system formed by the quorum of public and decentralized nodes can address the ‘split attack’ on public chain. It can not be, however, simple majority of nodes, because an attacker could run the large number of nodes under his control to fake votes in favor of his alternative chain. A quorum of masternodes is therefore required for selecting the ‘right’ chain. To run the masternode a collateral deposit is necessary which greatly reduces the possibility of attack because an attacker will have not only to gain 51% of network hashrate but also to make significant economical investment in collateral deposits in order to get control over the majority of masternodes.

This approach is pioneered in Karbo cryptocurrency, where it already helped to successfully withstand a 51% attack making it more secure and reliable not only without massive constant hashrate, but in the hostile hashrate environment, as it is still on original CryptoNight algorithm mineable by ASICs with lots of hashrate available for rent on Nicehash that was presumably used by the attacker during the failed attack."

Reference - https://medium.com/@karbo.org/prevent-transaction-cancellation-in-51-attack-79ba03d191f0

Citadel also uses this "protection".

denish
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June 05, 2019, 09:38:03 AM
 #152

Nice to have some news Smiley
CivilianMoor
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June 06, 2019, 12:17:23 PM
 #153


 Does ctl paper wallet work?
citadelplatform
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June 06, 2019, 10:13:18 PM
 #154

You can find it here: https://cntemple.github.io/Citadel-Paperwallet/

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June 25, 2019, 12:13:39 PM
 #155

Can't update wallet :/
No peers.
foRev_p2p
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June 25, 2019, 06:28:12 PM
 #156

Could you try seed-node written on source code?

https://github.com/cntemple/Citadel/blob/derate/src/CryptoNoteConfig.h#L131

"--seed-node 165.227.11.24:55008"

as argument.

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June 27, 2019, 07:43:12 AM
Last edit: June 30, 2019, 09:40:58 AM by citadelplatform
 #157



Citadel is changing it's hashing algorithm, introducing BlimpHash-B.

Solo-mining, at least for now.

Mandatory update for clients and services:

https://github.com/cntemple/Citadel/releases/tag/new_POW

citadelplatform
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June 30, 2019, 02:31:33 PM
Last edit: June 30, 2019, 03:45:09 PM by citadelplatform
 #158



We welcome everyone for CPU benchmarks for the new mining algorithm which is already active.

How to start mining?

1. Launch command line (CLI) "citadeld.exe" and "citadelwallet.exe"

2. Wait for Citadel daemon to be synced ("SYNCHRONIZED OK")

3. Open Citadelwallet.exe and input "start_mining x" where x is your number of threads.

4. On daemon ( citadeld.exe) input "show_hr" so you can see your mining hashrate.




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July 02, 2019, 07:52:10 AM
 #159

network corrupted, transactions canceled
citadelplatform
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July 02, 2019, 01:39:29 PM
 #160

network corrupted, transactions canceled

Why so?

Chain is running just fine as always.

Check yourself: http://chain.citadelplatform.org/#

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