Nengcoin v1.9.1.0 Released - Win/Linnux/Mac Wallets
Nengcoin v1.9.1.0 released with a bug fix on v1.9.x full node syncing problem
Windows and Linux binary wallets with upgrade instructions:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.1.0
MacOS wallet will be uploaded later to the same link above. Update: MacOS wallet and installation script has been uploaded to above link
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060 or some other block height either due to hard fork or due to full node syncing minimum work bug.
For ROOT CAUSE tech analysis on this bug, check out this report:
Root Cause Analysis on Full Node Syncing Trouble on v1.9.x Hard Fork
https://bitcointalksearch.org/topic/m.58358297
or
https://www.reddit.com/r/nengcoin/comments/qntqls/root_cause_analysis_on_full_node_syncing_trouble/
Topic: [NENG]Nengcoin - Litecoin on Steroids - Scrypt for All Miners - page 7. (Read 46675 times)
November 06, 2021, 11:20:47 AM
November 06, 2021, 12:19:55 AM
Root Cause Analysis on Full Node Syncing Trouble on v1.9.x Hard Fork
11/6/2021
Hong Lu, Dev of Nengcoin
Since our v1.9.x hard fork on Oct 31 2021, Nengcoin blockchain has been struggling for full nodes syncing. It seems to have formed many little chains without forming a real major chain. We initially thought this was due to "bad node", but we think we found the issue. It is not a "bad node" issue, the latest software release has bug, we call it "Minimum Work Bug".
Too Little Proof-of-Work Error
The debug.log file typically has this error recently when it rejects the obvious longest chain (like the on on block explorer):
Although Nengcoin core has difficulty adjustment changes with new introduction of "cheetah diff" for CPU/Mobile miners, and "Spike diff" for preventing 51% attacks, the basic concept of bitcoin longest chain rule never changed, the Nengcoin core largely cloned after Litecoin core v0.8.x branch, which itself cloned from bitcoin core v0.8.x. This error itself is strange enough. If there is bad node, well whoever agree with NENG core algo and have the bitcoin longest chain on math should win and other chains on bad node should just be orphaned. In other word, in concept of bitcoin/litecoin blockchain world, chain should not get stuck by this.
Code on this error
Here is code from NENG source code that will print out this error:
https://github.com/ShorelineCrypto/nengcoin/blob/MinWorkBug/src/main.cpp#L2618
This error was result of condition of this function "ComputeMinWork", by going through this function and many real cases that block get stuck, we think we found root cause of this issue. Indeed, we believe the v1.9.0.0 code has software bug that caused this recent chaos on Nengcoin blockchain.
Trouble 1 - Failed on Difficulty Range on Cheetah Blocks
On the function "ComputeMinWork", it has an assumption that block difficulty should just be no more 4x increase or decrease because that is how it works on bitcoin or litecoin. Each difficulty adjustment may cause difficulty drop, but no more than 1/4 of previous difficulty period. Nengcoin is different, we know it can have CPU cheetah block that has difficulty that is significantly below this 4x range up or down. We know that NENG difficulty can have a sharp reset, the difficulty drop a lot.
We have this fix on this issue:
https://github.com/ShorelineCrypto/nengcoin/commit/c4332786c5263474aea3b102955b084328e1404c
Trouble 2 - Checkpoint block selection that can fail Min Work Check
Another common trouble that we observed has nothing to do with cheetah difficulty on cheetah blocks. We went through this code on "ComputeMinWork" and realized that it checks difficulty from the last checkpoint block and enforce a rule that minimum work is no less than 1/4 adjustment for each period. In bitcoin and litecoin, that is correct math because difficulty can only be adjusted up 4x or downward to no less than 1/4. But this is not true understanding of Nengcoin blockchain. We know NENG sometimes can do a reset, and the difficulty can drop to very low levels from high levels, thus breaking this no more 4x, no less 1/4 rule.
We have a fix on this issue, in that we should not set a checkpoint on high difficulty block, we should just pick a block on cheetah difficulty to avoid this pitfalls: https://github.com/ShorelineCrypto/nengcoin/commit/d68d0e543249040774f45c448af0a43e728dffbb
The above fix should work because block height 3244063 has only difficulty of 0.0391. The Nengcoin code can continue enforcing no more than 1/4 drop on each period, but the chain is not likely to drop that below cheetah diff, therefore the fix should just work.
Checkpoint in bitcoin world is no longer favored because checkpoint essentially is a control by software side, by dev. Nengcoin is like bitcoin/litecoin/dogecoin and we believe that dev should not have that much control on this issue. In that sense, we are not likely to use checkpoint in software release frequently, and we only use checkpoint when a major hard fork is released. The Nengcoin full node syncing will rely mainly on bitcoin longest chain rule to decide who is the winner, who is loser on blockchain mining competition. Because of philosophically not favoring checkpoint technology on this blockchain, picking a cheetah diff as infrequent security measure is a quite reasonably good fix on this issue.
11/6/2021
Hong Lu, Dev of Nengcoin
Since our v1.9.x hard fork on Oct 31 2021, Nengcoin blockchain has been struggling for full nodes syncing. It seems to have formed many little chains without forming a real major chain. We initially thought this was due to "bad node", but we think we found the issue. It is not a "bad node" issue, the latest software release has bug, we call it "Minimum Work Bug".
Too Little Proof-of-Work Error
The debug.log file typically has this error recently when it rejects the obvious longest chain (like the on on block explorer):
Code:
ERROR: ProcessBlock() : block with too little proof-of-work
Although Nengcoin core has difficulty adjustment changes with new introduction of "cheetah diff" for CPU/Mobile miners, and "Spike diff" for preventing 51% attacks, the basic concept of bitcoin longest chain rule never changed, the Nengcoin core largely cloned after Litecoin core v0.8.x branch, which itself cloned from bitcoin core v0.8.x. This error itself is strange enough. If there is bad node, well whoever agree with NENG core algo and have the bitcoin longest chain on math should win and other chains on bad node should just be orphaned. In other word, in concept of bitcoin/litecoin blockchain world, chain should not get stuck by this.
Code on this error
Here is code from NENG source code that will print out this error:
https://github.com/ShorelineCrypto/nengcoin/blob/MinWorkBug/src/main.cpp#L2618
This error was result of condition of this function "ComputeMinWork", by going through this function and many real cases that block get stuck, we think we found root cause of this issue. Indeed, we believe the v1.9.0.0 code has software bug that caused this recent chaos on Nengcoin blockchain.
Trouble 1 - Failed on Difficulty Range on Cheetah Blocks
On the function "ComputeMinWork", it has an assumption that block difficulty should just be no more 4x increase or decrease because that is how it works on bitcoin or litecoin. Each difficulty adjustment may cause difficulty drop, but no more than 1/4 of previous difficulty period. Nengcoin is different, we know it can have CPU cheetah block that has difficulty that is significantly below this 4x range up or down. We know that NENG difficulty can have a sharp reset, the difficulty drop a lot.
We have this fix on this issue:
https://github.com/ShorelineCrypto/nengcoin/commit/c4332786c5263474aea3b102955b084328e1404c
Trouble 2 - Checkpoint block selection that can fail Min Work Check
Another common trouble that we observed has nothing to do with cheetah difficulty on cheetah blocks. We went through this code on "ComputeMinWork" and realized that it checks difficulty from the last checkpoint block and enforce a rule that minimum work is no less than 1/4 adjustment for each period. In bitcoin and litecoin, that is correct math because difficulty can only be adjusted up 4x or downward to no less than 1/4. But this is not true understanding of Nengcoin blockchain. We know NENG sometimes can do a reset, and the difficulty can drop to very low levels from high levels, thus breaking this no more 4x, no less 1/4 rule.
We have a fix on this issue, in that we should not set a checkpoint on high difficulty block, we should just pick a block on cheetah difficulty to avoid this pitfalls: https://github.com/ShorelineCrypto/nengcoin/commit/d68d0e543249040774f45c448af0a43e728dffbb
The above fix should work because block height 3244063 has only difficulty of 0.0391. The Nengcoin code can continue enforcing no more than 1/4 drop on each period, but the chain is not likely to drop that below cheetah diff, therefore the fix should just work.
Checkpoint in bitcoin world is no longer favored because checkpoint essentially is a control by software side, by dev. Nengcoin is like bitcoin/litecoin/dogecoin and we believe that dev should not have that much control on this issue. In that sense, we are not likely to use checkpoint in software release frequently, and we only use checkpoint when a major hard fork is released. The Nengcoin full node syncing will rely mainly on bitcoin longest chain rule to decide who is the winner, who is loser on blockchain mining competition. Because of philosophically not favoring checkpoint technology on this blockchain, picking a cheetah diff as infrequent security measure is a quite reasonably good fix on this issue.
November 05, 2021, 01:13:10 AM
New information on this v1.9.x wallet full node syncing issue
we are looking to perform a software patch on this, because this may be a software bug related issue causing the syncing problem.
Nengcoin diffculty adjustment modified GetNextWork function to have extra cheetah diff (for CPU/Android miner) and spike diff on top of bitcoin style difficulty adjustment, other code was unchanged, this could be reason for the issue not able to syncing nodes into chain. Details:
Usually, bitcoin longest chain rule will slip and orphan one chain and merge into main chain quickly. However, something is wrong obviously on NENG now. Here is my wallet vs explorer chain, both were synced this morning, now it is forked into two chain. Debug.log file on this with conf enforcing 2 nodes only connected:
Essentially, two chains there connected by conf file connect=185.182.8.67
Explorer 185.182.8.67 has 3245633 blocks, this desktop node has 3245543. Most likely by bitcoin longest chain rule, explorer has bigger work, should be good, the other chain should be orphaned. But it did not.
The log file saying "ERROR: ProcessBlock() : block with too little proof-of-work"
the node is saying the block explorer has too little work, misbehaving, ban this IP. Usually nodes get banned. In this case in conf file connect=explorerIP , banned and then reconnect, then banned again.
This may be a software issue or some of bug that needs to be fixed. Not sure how to resolve this now.
In the coming weekend, I need to dig through code, to see what his error "ProcessBlock() : block with too little proof-of-work", for now it is just muddle through. For now, not ideal solution, just make the explorer node as "official" blockchain for SLC trading purpose, not good, not great solution. But we have to muddle through this until it is fixed on code. It may be a software issue.
we are looking to perform a software patch on this, because this may be a software bug related issue causing the syncing problem.
Nengcoin diffculty adjustment modified GetNextWork function to have extra cheetah diff (for CPU/Android miner) and spike diff on top of bitcoin style difficulty adjustment, other code was unchanged, this could be reason for the issue not able to syncing nodes into chain. Details:
Usually, bitcoin longest chain rule will slip and orphan one chain and merge into main chain quickly. However, something is wrong obviously on NENG now. Here is my wallet vs explorer chain, both were synced this morning, now it is forked into two chain. Debug.log file on this with conf enforcing 2 nodes only connected:
Code:
2021-11-05 01:03:36 connected 185.182.8.67
2021-11-05 01:03:36 send version message: version 70002, blocks=3245543, us=0.0.0.0:0, them=185.182.8.67:6377, peer=185.182.8.67:6377
2021-11-05 01:03:36 receive version message: /Satoshi:1.9.0/: version 70002, blocks=3245633, us=71.234.69.93:60108, them=185.182.8.67:6377, peer=185.182.8.67:6377
2021-11-05 01:03:36 UPnP Port Mapping successful.
2021-11-05 01:05:34 received block 13853f1ca7f585fa8a30fbc863cc04dea3903b943e839c39839775621ef4a8b8
2021-11-05 01:05:34 ERROR: ProcessBlock() : block with too little proof-of-work
2021-11-05 01:05:34 Misbehaving: 185.182.8.67:6377 (0 -> 100) DISCONNECTING
2021-11-05 01:05:34 disconnecting node 185.182.8.67
2021-11-05 01:05:35 trying connection 192.168.86.98:6377 lastseen=426687.3hrs
2021-11-05 01:05:35 connect() failed after select(): Connection refused
2021-11-05 01:05:37 trying connection 185.182.8.67 lastseen=0.0hrs
2021-11-05 01:05:37 connected 185.182.8.67
2021-11-05 01:05:37 send version message: version 70002, blocks=3245543, us=0.0.0.0:0, them=185.182.8.67:6377, peer=185.182.8.67:6377
Explorer 185.182.8.67 has 3245633 blocks, this desktop node has 3245543. Most likely by bitcoin longest chain rule, explorer has bigger work, should be good, the other chain should be orphaned. But it did not.
The log file saying "ERROR: ProcessBlock() : block with too little proof-of-work"
the node is saying the block explorer has too little work, misbehaving, ban this IP. Usually nodes get banned. In this case in conf file connect=explorerIP , banned and then reconnect, then banned again.
This may be a software issue or some of bug that needs to be fixed. Not sure how to resolve this now.
In the coming weekend, I need to dig through code, to see what his error "ProcessBlock() : block with too little proof-of-work", for now it is just muddle through. For now, not ideal solution, just make the explorer node as "official" blockchain for SLC trading purpose, not good, not great solution. But we have to muddle through this until it is fixed on code. It may be a software issue.
November 04, 2021, 11:48:55 AM
Why is it so hard to mine a block right now? (CPU and Asic)
The chain has syncing problems since the hard fork. Many bad nodes there (old versions) preventing syncing (like orphan correct chain). Obviously the explorer blockchain is bitcoin longest chain ruled based result, the syncing has some math issue due to bad nodes there.
Even on same versions, many miners are mining their own chain, not forming into one chain only yet. We are trying and communicating in discord now. SO the issue is really a full node chain syncing problem, rather than a mining issue.
When you mine a dead chain, sure you mined reward will be orphaned later.
Another factor, diff is bit too low, NOw is CPU mining range. There are more penalty on ASIC (including USB ASICs) when diff is too low.
When ASIC get stuck for more than 2 minutes, only (or mostly) CPU miners on PC or android can move the chain. However, due to node syncing issue, most of android phone miners are offline, not up to latest block. No CPU miners, one block get stuck could take half to 1 hour to be mined by a handleful of small CPU miners on "cheetah_cpuminer" tool
November 04, 2021, 11:46:13 AM
Latest snapshot of good node, no conf/wallet.dat, but including all other files in data folder. Recommended for x64 Linux + Windows10, not recommended for android phone:
https://drive.google.com/file/d/1lCT2XZRTlPXsOGvxhZatt444mpCImofF/view?usp=sharing
for Android phone, current easiest is to use snap shot to sync a local copy of wallet on windows10 or desktop Linux on x64, well connected on same block as explorer, then do below syncing, removing all other files, keep wallet.dat and nengcoin.conf with content below:
Code:
pcuser=yourrpcuser
rpcpassword=yourrpcpassword
rpcport=6376
rpcallowip=127.0.0.1
server=1
daemon=1
connect=192.168.86.115
November 03, 2021, 03:40:25 AM
Why is it so hard to mine a block right now? (CPU and Asic)
November 02, 2021, 06:08:36 PM
Full Node Syncing Problem
This issue apply for all full nodes, solo miners or pool miners etc.
Posted byu/Sokka2015
3 hours ago
Live node problem
Hello Nengsters!
There was an issue regarding node syncing and it has been resolved. For those having node syncing problems check block explorer and put some addnode using live-node board, do "dead chain" procedure as usual in our reset times if needed if the node can not sync.
Block Explorer link: http://nengexplorer.mooo.com:3001/
-----------------------------------------------------------------------------
honglu69
·
just now
For those nodes miners that do not have any clean chain data available from another node, do this below to re-sync from beginning to end to get correct chain:
./nengcoind -reindex
To speed up syncing and target correct nodes source, you can max out for only two connections, any two with correct blocks and addnode in "nengcoin.conf" file and delete other nodes to insure no interference from other wrong nodes:
------------
upnp=1
maxconnections=2
addnode=71.234.69.93:6377
addnode=185.182.8.67:6377
addnode=209.145.50.223:43768
----------
This issue apply for all full nodes, solo miners or pool miners etc.
Posted byu/Sokka2015
3 hours ago
Live node problem
Hello Nengsters!
There was an issue regarding node syncing and it has been resolved. For those having node syncing problems check block explorer and put some addnode using live-node board, do "dead chain" procedure as usual in our reset times if needed if the node can not sync.
Block Explorer link: http://nengexplorer.mooo.com:3001/
-----------------------------------------------------------------------------
honglu69
·
just now
For those nodes miners that do not have any clean chain data available from another node, do this below to re-sync from beginning to end to get correct chain:
./nengcoind -reindex
To speed up syncing and target correct nodes source, you can max out for only two connections, any two with correct blocks and addnode in "nengcoin.conf" file and delete other nodes to insure no interference from other wrong nodes:
------------
upnp=1
maxconnections=2
addnode=71.234.69.93:6377
addnode=185.182.8.67:6377
addnode=209.145.50.223:43768
----------
November 02, 2021, 12:13:47 AM
Nengcoin v1.9.0.4 Released - Linux on Arm Device
v1.9.x hard fork after 3243060
Full version tag: "v1.9.0.0-randomSpike-v1.9.x"
Web Guide for Raspberry Pi 4:
https://github.com/ShorelineCrypto/nengcoin/tree/master/doc/Raspberry_Pi_4
Linux on Arm device (such as Rasberry Pi 4) wallets on 64 bits or 32 bits Arm (arm64 and armhf) wallet download:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.4
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
v1.9.x hard fork after 3243060
Full version tag: "v1.9.0.0-randomSpike-v1.9.x"
Web Guide for Raspberry Pi 4:
https://github.com/ShorelineCrypto/nengcoin/tree/master/doc/Raspberry_Pi_4
Linux on Arm device (such as Rasberry Pi 4) wallets on 64 bits or 32 bits Arm (arm64 and armhf) wallet download:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.4
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
November 01, 2021, 11:44:19 PM
Nengcoin v1.9.0.3 Released - Chromebook on x64/Arm
Nengcoin v1.9.0.3 released with hard fork after block height 3243060
Full version tag: "v1.9.0.0-randomSpike-v1.9.x"
Chromeos wallets on x86_64 or Arm (64 bits or 32 bits):
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.3
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060.
Nengcoin v1.9.0.3 released with hard fork after block height 3243060
Full version tag: "v1.9.0.0-randomSpike-v1.9.x"
Chromeos wallets on x86_64 or Arm (64 bits or 32 bits):
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.3
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060.
November 01, 2021, 10:48:28 AM
armhf CLI wallet and arm64 GUI binary files uploaded to same URL
November 01, 2021, 10:41:08 AM
Nengcoin v1.9.0.2 Released - Android Phone on Arm (arm64 armhf)
Nengcoin v1.9.0.2 released with hard fork after block height 3243060
Android phone/tablet wallets on 64 bits or 32 bits Arm (arm64 and armhf):
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.2
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
Note: armhf GUI wallet will be released shortly after at same URL above
Nengcoin v1.9.0.2 released with hard fork after block height 3243060
Android phone/tablet wallets on 64 bits or 32 bits Arm (arm64 and armhf):
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.2
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
Note: armhf GUI wallet will be released shortly after at same URL above
October 31, 2021, 03:41:55 PM
Nengcoin v1.9.0.1 Released - 8 Distros of Linux on x64 Wallets
Nengcoin v1.9.0.1 released with hard fork at block height hard fork after 3243060
Linux wallets of 8 distros with upgrade instructions:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.1
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
Nengcoin v1.9.0.1 released with hard fork at block height hard fork after 3243060
Linux wallets of 8 distros with upgrade instructions:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.1
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
October 31, 2021, 01:52:54 PM
Community PUBLIC SERVICE ANNOUNCEMENT on v1.9.x Hard Fork
NENG commissioner RedRaider10 announced in discord "Announcement" Channel:
NENG commissioner RedRaider10 announced in discord "Announcement" Channel:
Quote
RedRaider10 | [🥉] — Today at 2:41 PM
@NENGsters
-------------------------------------------------------------------------------
PUBLIC SERVICE ANNOUNCEMENT
Hello Fellow Nengsters!
As you all know that us Neng Leaders have been working hard behind the scenes discussing which route to take for getting back 4.25 Billion Neng to give back to SouthXChange. We were given three choices which were:
No inflation - Which means raising the 4.25 billion Neng and giving it back to Southxchange.
Partial Inflation - Which double taxes donators and also taxes miners. Also the donations would be used because of the taxes which means no one would get back their donations if they wanted it back. Also it only inflates the coin by a specific amount needed instead of inflating by full 4.25 billion Neng, which is then mined in 1 block.
Full Inflation - Which inflates the 4 billion Neng and is mined in one block by us Neng Leaders. No one is taxed. Donations will not be used for 4 Billion payout.
The decision we agreed on was full inflation. The reason was that no one would be taxed and it gives us the chance to give back donations to those who donated, if they so choose to. @RedRaider10 | [🥉] | [🥉] will be in charge of handling the donation give backs event. The give back event will be open for only a month to claim back your donation if you so choose to. @Redraider will announce the rules and stipulation for claiming back your donation for those who donated.
Lastly, the funds still in the donation wallet after one month would be used for marketing, dev bounty, public NENG ASIC pool/rig etc, whichever is decided. We will also create a NENG funds channel under Donation category where if you would like to add to the Neng funds it will be there for you to donate to.
News update: Today Oct. 31st, 2021 @2:09 PM we have now successfully mined the 4.25 Billion NENG and will be in the process to giving it back to SouthXChange to get Nengcoin wallet up and running!
Thank you for your patience Nengsters and we have not forgotten about you all!
Happy mining and Happy trading!
#Nengcointothemoon
#Nengcandoit!
@NENGsters
-------------------------------------------------------------------------------
PUBLIC SERVICE ANNOUNCEMENT
Hello Fellow Nengsters!
As you all know that us Neng Leaders have been working hard behind the scenes discussing which route to take for getting back 4.25 Billion Neng to give back to SouthXChange. We were given three choices which were:
No inflation - Which means raising the 4.25 billion Neng and giving it back to Southxchange.
Partial Inflation - Which double taxes donators and also taxes miners. Also the donations would be used because of the taxes which means no one would get back their donations if they wanted it back. Also it only inflates the coin by a specific amount needed instead of inflating by full 4.25 billion Neng, which is then mined in 1 block.
Full Inflation - Which inflates the 4 billion Neng and is mined in one block by us Neng Leaders. No one is taxed. Donations will not be used for 4 Billion payout.
The decision we agreed on was full inflation. The reason was that no one would be taxed and it gives us the chance to give back donations to those who donated, if they so choose to. @RedRaider10 | [🥉] | [🥉] will be in charge of handling the donation give backs event. The give back event will be open for only a month to claim back your donation if you so choose to. @Redraider will announce the rules and stipulation for claiming back your donation for those who donated.
Lastly, the funds still in the donation wallet after one month would be used for marketing, dev bounty, public NENG ASIC pool/rig etc, whichever is decided. We will also create a NENG funds channel under Donation category where if you would like to add to the Neng funds it will be there for you to donate to.
News update: Today Oct. 31st, 2021 @2:09 PM we have now successfully mined the 4.25 Billion NENG and will be in the process to giving it back to SouthXChange to get Nengcoin wallet up and running!
Thank you for your patience Nengsters and we have not forgotten about you all!
Happy mining and Happy trading!
#Nengcointothemoon
#Nengcandoit!
October 31, 2021, 01:40:06 PM
Nengcoin v1.9.0.0 Released - Win/Linnux/Mac Wallets
Nengcoin v1.9.0.0 released with hard fork at block height hard fork after 3243060
Windows and Linux binary wallets with upgrade instructions:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.0
MacOS wallet will be uploaded later to the same link above
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
Note for ASIC miners: some pools may have not upgraded to new version wallet yet. Findblock/CMinor's NENG pool is already on new version chain already.
Note for phone miners: phone wallet will be release soon, for now you can stop phone mining on old chain and wait for new coming version release on v1.9.x.
Nengcoin v1.9.0.0 released with hard fork at block height hard fork after 3243060
Windows and Linux binary wallets with upgrade instructions:
https://github.com/ShorelineCrypto/nengcoin/releases/tag/v1.9.0.0
MacOS wallet will be uploaded later to the same link above
This is major release and all new and existing NENG members are required to upgrade wallet. The old version of wallet will not sync after block height 3243060
Note for ASIC miners: some pools may have not upgraded to new version wallet yet. Findblock/CMinor's NENG pool is already on new version chain already.
Note for phone miners: phone wallet will be release soon, for now you can stop phone mining on old chain and wait for new coming version release on v1.9.x.
September 26, 2021, 08:38:06 PM
Dev Heart to Heart Talk with the 51% Attacker
I am quite disappointed by this 51% attacker, most likely an ASIC miner insider, who would
do this when one spent so much long time to mine that much NENG. But what has been
done is done, the 51% attacker also exposed some weak point on the core software code that
dev needs to improve in the future upgrade. We can find an amicable solution for the benefit
of everyone in the NENG community including the 51% attacker. If you are the 51% attacker,
hear me out below:
I would propose that we have no inflation hard fork, the NENG supply cap stay as it is at 84
billion NENG. 84 is magic number from Litecoin, we are a new generation of litecoin, it is
good that we maintain this. I am creator of Nengcoin and I am willing to donate up to 2 billion
NENG for this SXC loss, and you return 2 billion NENG to below address:
NENG: NWSfowB8i1s78zUw8Umse1hHZF4Xovb7kr
We have other members of NENG community who already donated more than 100 million
NENG and we can restore all this without any inflation. We will have software code upgrade
v1.9.x to address this ASIC mining decentralization issue (read below).
What I want to argue is that by returning 2 billion NENG and keeping 2.25 billion NENG, this
is far better off outcome than your current status. Yes, you can keep 4.25 billion NENG now,
but my opinion is that this 4 billion NENG is not going to be worth that much for you. Think
about economics of this community, dev, community leaders are not likely work that hard on
this coin going forward if we are not on same team. Essentially we are working for you
because most of community members do not own that much NENG as you do. Also you
know as buyer when one push up the price too high, the attacker is going to come and do
51% attack for $5000 USD. It is already a public information that an insider 51% attacker
happened. So it should not be surprising that most NENG future buyers will know that and will
not push up NENG price too high. This coin price is capped by this issue. Let me be honest,
at most may be you can do another 51% attack for $5000 USD and let some suckers got
stuck on NENG again at exchange.
Now let’s think about the other outcome, if you return 2 billion NENG and we are on same
team again. How much more you can make on this 2.25 billion NENG? It could be far worth
more, and you could be rich from this ownership.
For the sake of easy calculation, I am using 84 billion NENG as the supply number and
current shorelinecrypto trading price to do below math
NENG is first full block mobile minable coin. Electroneum (ETN) started out as mobile mining
coin. ETN is centralized with fake mobile mining while NENG is decentralized with real proof
of work mining on android phones. NENG partner with Cheetahcoin is dedicated for mobile
decentralization and allow thousands and millions of under-priviledged people to mine crypto
through an android phone. It is reasonable that our NENG price is trading at higher market
cap than Electroneum (ETN). If this happens in the future, your 2.25 billion NENG could be
worth 10.4 million USD at low end.
In the long run, our dev team will improve code and keep working on improving
ASIC/CPU/Android mining decentralization issue to improve security. For example, we have
long term idea of automatically adjust spike difficulty and cheetah difficulty on code rather
than manual hard fork upgrade. It is not unreasonable to have NENG to be ranked as 3rd
POW scrypt coin behind dogecoin and litecoin and we achieve half of litecoin market cap.
When that happens, your 2.25 billion NENG could be worth 134 million USD at high end.
Are those number crazy? Impossible to achieve? I can not promise anything, but the way we
goes, Yes, we can. We can change the world with new 51% attack protection method algo on
scrypt and we can achieve with hard work from dev, and commissioners, ambassadors and
miners on ASICs, CPUs, Andoid phones. NENG price rose 10x in 2020, and NENG price
rose another 10x in 2021 on USD before the 51% attack. 100x was just a start, once we go
through all the issues with technical improvement and code upgrades, another 100x, 1000x,
1 million x, yes, it is all possible!
NENG in chinese has meaning of “capable of doing something”, “empower”. Dogecoin and
litecoin and Nengcoin are all scrypt coins. Dogecoin and litecoin created many millionaires in
the past, Nengcoin we are litecoin on mobile phones! Yes we can too!
I am quite disappointed by this 51% attacker, most likely an ASIC miner insider, who would
do this when one spent so much long time to mine that much NENG. But what has been
done is done, the 51% attacker also exposed some weak point on the core software code that
dev needs to improve in the future upgrade. We can find an amicable solution for the benefit
of everyone in the NENG community including the 51% attacker. If you are the 51% attacker,
hear me out below:
I would propose that we have no inflation hard fork, the NENG supply cap stay as it is at 84
billion NENG. 84 is magic number from Litecoin, we are a new generation of litecoin, it is
good that we maintain this. I am creator of Nengcoin and I am willing to donate up to 2 billion
NENG for this SXC loss, and you return 2 billion NENG to below address:
NENG: NWSfowB8i1s78zUw8Umse1hHZF4Xovb7kr
We have other members of NENG community who already donated more than 100 million
NENG and we can restore all this without any inflation. We will have software code upgrade
v1.9.x to address this ASIC mining decentralization issue (read below).
What I want to argue is that by returning 2 billion NENG and keeping 2.25 billion NENG, this
is far better off outcome than your current status. Yes, you can keep 4.25 billion NENG now,
but my opinion is that this 4 billion NENG is not going to be worth that much for you. Think
about economics of this community, dev, community leaders are not likely work that hard on
this coin going forward if we are not on same team. Essentially we are working for you
because most of community members do not own that much NENG as you do. Also you
know as buyer when one push up the price too high, the attacker is going to come and do
51% attack for $5000 USD. It is already a public information that an insider 51% attacker
happened. So it should not be surprising that most NENG future buyers will know that and will
not push up NENG price too high. This coin price is capped by this issue. Let me be honest,
at most may be you can do another 51% attack for $5000 USD and let some suckers got
stuck on NENG again at exchange.
Now let’s think about the other outcome, if you return 2 billion NENG and we are on same
team again. How much more you can make on this 2.25 billion NENG? It could be far worth
more, and you could be rich from this ownership.
For the sake of easy calculation, I am using 84 billion NENG as the supply number and
current shorelinecrypto trading price to do below math
| NENG marketcap | ETN Marketcap | 50% LTC Marketcap | 2.25 billion NENG worth low | 2.25 Billion NENG Worth hig |
| 61K USD | 388M USD | 5B USD | 10.4million USD | 134 million USD |
NENG is first full block mobile minable coin. Electroneum (ETN) started out as mobile mining
coin. ETN is centralized with fake mobile mining while NENG is decentralized with real proof
of work mining on android phones. NENG partner with Cheetahcoin is dedicated for mobile
decentralization and allow thousands and millions of under-priviledged people to mine crypto
through an android phone. It is reasonable that our NENG price is trading at higher market
cap than Electroneum (ETN). If this happens in the future, your 2.25 billion NENG could be
worth 10.4 million USD at low end.
In the long run, our dev team will improve code and keep working on improving
ASIC/CPU/Android mining decentralization issue to improve security. For example, we have
long term idea of automatically adjust spike difficulty and cheetah difficulty on code rather
than manual hard fork upgrade. It is not unreasonable to have NENG to be ranked as 3rd
POW scrypt coin behind dogecoin and litecoin and we achieve half of litecoin market cap.
When that happens, your 2.25 billion NENG could be worth 134 million USD at high end.
Are those number crazy? Impossible to achieve? I can not promise anything, but the way we
goes, Yes, we can. We can change the world with new 51% attack protection method algo on
scrypt and we can achieve with hard work from dev, and commissioners, ambassadors and
miners on ASICs, CPUs, Andoid phones. NENG price rose 10x in 2020, and NENG price
rose another 10x in 2021 on USD before the 51% attack. 100x was just a start, once we go
through all the issues with technical improvement and code upgrades, another 100x, 1000x,
1 million x, yes, it is all possible!
NENG in chinese has meaning of “capable of doing something”, “empower”. Dogecoin and
litecoin and Nengcoin are all scrypt coins. Dogecoin and litecoin created many millionaires in
the past, Nengcoin we are litecoin on mobile phones! Yes we can too!
September 26, 2021, 08:22:44 PM
Assessment 51% Attack, Minutes, Solutions
Hong Lu, Developer of Nengcoin
9/26/2021
To read full text of report, check here:
https://github.com/ShorelineCrypto/nengcoin/releases/download/assessment_51/Assessment_51percent_Attack.pdf
Hong Lu, Developer of Nengcoin
9/26/2021
- Background of Recent 51% Attack
- A Series of Events Happened on SouthXchange
- NENG Community Leaders Tried Many Options before Announcement
- Minutes of NENG Leader Meeting Decision, 3 Choices
- Slow 51% Attack in 1 day
- The 51% Attacker is NENG Insider, ASIC Mining Decentralization
- Dev Heart to Heart Talk with the 51% Attacker
- Possible v1.9.x Hard Fork Solutions
To read full text of report, check here:
https://github.com/ShorelineCrypto/nengcoin/releases/download/assessment_51/Assessment_51percent_Attack.pdf
September 20, 2021, 05:11:03 PM
NENG Trading Resumed
Subreddit Icon
r/nengcoin
•Posted byu/Sokka2015
25 minutes ago
Trading
Hello Fellow Nengsters!!
Trading on ShorelineCrypto exchange has been resumed!
September 18, 2021, 10:06:32 PM
Community Announcement on Double Spent 51% attack and Solution
Announced by NENG commissioner RedRaider10 (discord ID) on community decision today
RedRaider10 | [🥉] — Today at 10:37 PM
@NENGsters
PSA!!
Hello Fellow Nengsters!
This week, Nengcoin suffered its first successful 51% attack. This is the reason why shortly thereafter, trading on both SouthXchange and Shoreline Crypto Exchange was halted.
4.25 billion Nengcoin was double spent and sold on SouthXchange by the attacker.
There were several options available to rectify the issue and in the end, it was decided to keep the current chain and take the loss. This was decided as the best option in regards to the integrity and honor of the project and our community. Either reversing the chain, inflating the cap of the coin by over 4%, or simply walking away from our obligations to an exchange that has been honorable and helpful on their end is not in keeping with the philosophy of this project.
This means that all blocks mined by our miners are and will remain valid. All transactions on both exchanges will remain valid as well.
Shoreline Crypto will resume trading shortly. SouthXchange will resume trading (and honor withdrawals in process) once the 4.25 billion coins that was double spent are reimbursed.
Over 2 billion of this reimbursement has already been provided by leaders of the community out of their personal holdings.
We are not doing a formal fundraising for the remainder of the loss, but if you would like to contribute towards us overcoming this challenge more quickly, you are welcome to send to addresses provided at the end of this announcement.
In regards to the security of the blockchain:
The reason this occurred is because the spike block trigger (known as the Cheetah Effect), was at a high setting allowing ASIC miners to put more power towards the blockchain without hitting a spike block. This "trust" was used to double spend.
When 51% event is attempted by ASIC miner, our CPU mining fleet is designed to work to insure the security of the blockchain from takeover from such ASIC attacker as soon as the ASIC miner mined a spike block.
A hardfork will be forthcoming to lower the threshold for triggering the spike block to ensure security. A side effect will be that ASIC miners will begin hitting spike blocks more frequently and be limited.
Dev will begin working on engineering a way to make the Cheetah Effect difficulty be an automatic process to allow the concurrent goals of security and maximum hashrate growth be as efficient as possible.
An analysis document of the security breach, immediate security solution, and long-term development of more dynamic security protocols will be forthcoming on Github for a more detailed understanding.
The success and reflected increase in value of each Nengcoin made the attack become attractive, and was a hard lesson to be learned. This lesson has been taken to heart and will not be repeated.
Please look forward to version 1.9.x of the Nengcoin wallet to download and update.
Donation Wallet:
NENG: NWSfowB8i1s78zUw8Umse1hHZF4Xovb7kr
Announced by NENG commissioner RedRaider10 (discord ID) on community decision today
RedRaider10 | [🥉] — Today at 10:37 PM
@NENGsters
PSA!!
Hello Fellow Nengsters!
This week, Nengcoin suffered its first successful 51% attack. This is the reason why shortly thereafter, trading on both SouthXchange and Shoreline Crypto Exchange was halted.
4.25 billion Nengcoin was double spent and sold on SouthXchange by the attacker.
There were several options available to rectify the issue and in the end, it was decided to keep the current chain and take the loss. This was decided as the best option in regards to the integrity and honor of the project and our community. Either reversing the chain, inflating the cap of the coin by over 4%, or simply walking away from our obligations to an exchange that has been honorable and helpful on their end is not in keeping with the philosophy of this project.
This means that all blocks mined by our miners are and will remain valid. All transactions on both exchanges will remain valid as well.
Shoreline Crypto will resume trading shortly. SouthXchange will resume trading (and honor withdrawals in process) once the 4.25 billion coins that was double spent are reimbursed.
Over 2 billion of this reimbursement has already been provided by leaders of the community out of their personal holdings.
We are not doing a formal fundraising for the remainder of the loss, but if you would like to contribute towards us overcoming this challenge more quickly, you are welcome to send to addresses provided at the end of this announcement.
In regards to the security of the blockchain:
The reason this occurred is because the spike block trigger (known as the Cheetah Effect), was at a high setting allowing ASIC miners to put more power towards the blockchain without hitting a spike block. This "trust" was used to double spend.
When 51% event is attempted by ASIC miner, our CPU mining fleet is designed to work to insure the security of the blockchain from takeover from such ASIC attacker as soon as the ASIC miner mined a spike block.
A hardfork will be forthcoming to lower the threshold for triggering the spike block to ensure security. A side effect will be that ASIC miners will begin hitting spike blocks more frequently and be limited.
Dev will begin working on engineering a way to make the Cheetah Effect difficulty be an automatic process to allow the concurrent goals of security and maximum hashrate growth be as efficient as possible.
An analysis document of the security breach, immediate security solution, and long-term development of more dynamic security protocols will be forthcoming on Github for a more detailed understanding.
The success and reflected increase in value of each Nengcoin made the attack become attractive, and was a hard lesson to be learned. This lesson has been taken to heart and will not be repeated.
Please look forward to version 1.9.x of the Nengcoin wallet to download and update.
Donation Wallet:
NENG: NWSfowB8i1s78zUw8Umse1hHZF4Xovb7kr
September 08, 2021, 08:44:33 PM
NENG 3 Year Ann. 2Y Performance Parity with DOGE
Sep 8, 2021
Hong Lu - Creator and Dev of Nengcoin
Fellow Nengsters!
Today is 3 year anniversary of launch of Nengcoin. 3 year ago on this day, I released NewEnglandcoin (old Nengcoin name) github source code publicly. We achieved tremendous success over past 3 years thanks to all your Nengsters' support!
Performance Parity with DOGE
On today's trading price, NENG also achieved performance parity with dogecoin over past 2 calendar years!
On Jan 4, 2020, I posted in bitcointalk ann article commenting on shorelinecrypto fee policy:
https://bitcointalksearch.org/topic/m.53521502
There I mentioned that on that day, 1 doge could be converted to 73926 NENG at shorelinecrypto roughtly at 0.00001350 NENG/DOGE trading price. Today we can do the same conversion at southxchange at same price.
Doge USD price performance since Jan 4, 2020: 10,569.32%
Neng USD price performance since Jan 4, 2020: 10,569.32%
Both DOGE and NENG achieved 105x on USD price over past 1 year and 8 months. In fact, NENG USD price performance in 2020 beat DOGE after releasing mobile mining feature in summer of 2020. Then in early 2021, DOGE performance beat NENG a lot after Elon tweets. After sharp bitcoin sell off after April, NENG price rallied back hard and achieved parity performance with DOGE today!
Early NENG Performance and Anecdote
In early years of NENG years ago, NENG could have been mined very cheaply at large quantity. Before Nov 2018, NENG was mined mostly by ASIC miners on hundreds to billions of NENG supply. After CPU mining feature enabled on Nov 28, 2018, CPU miners and USB ASIC miners entered conversation. There was story in NENG discord by Krypton, who donated majority of logo bounty that he mined 500 million NENG within 1 hour of reset using a powerful PC in combination with an ASIC. Today, to mine 500 million NENG, miner would need a very powerful ASIC device on high electricity bill, or long long mining period on USB ASIC or android phones.
There were also many sharp sell off in early years so that investors who bought at very cheap price and hodling still today made big profit on NENG at cheap cost. I myself mainly an investor who bought large quantity of NENG at exchange with DOGE because my mining device (CPU, USB ASIC or android) are weak on hashrate. I along with others benefited hugely on this super performance of NENG.
Bright Future Expections
NENG started with ASIC mining, then CPU mining and then mobile mining. At 105x today, NENG is still cheap compared to Dogecoin or Electroneum
Market Cap on USD
Dogecoin (DOGE) - $ 33,180,000,000
Electroneum (ETN) - $ 236,720,000
Nengcoin (NENG) - $ 190,909
If NENG catch up with Electroneum market cap, NENG price would rise 1240x from here. If NENG catch up with dogecoin market cap, NENG price would rise 173800x! Nengcoin price today is still very cheap and has huge potential upward.
Bright future ahead for Nengcoin!
Sep 8, 2021
Hong Lu - Creator and Dev of Nengcoin
Fellow Nengsters!
Today is 3 year anniversary of launch of Nengcoin. 3 year ago on this day, I released NewEnglandcoin (old Nengcoin name) github source code publicly. We achieved tremendous success over past 3 years thanks to all your Nengsters' support!
Performance Parity with DOGE
On today's trading price, NENG also achieved performance parity with dogecoin over past 2 calendar years!
On Jan 4, 2020, I posted in bitcointalk ann article commenting on shorelinecrypto fee policy:
https://bitcointalksearch.org/topic/m.53521502
There I mentioned that on that day, 1 doge could be converted to 73926 NENG at shorelinecrypto roughtly at 0.00001350 NENG/DOGE trading price. Today we can do the same conversion at southxchange at same price.
- Jan 4, 2020 - 1 DOGE = 73926 NENG
- Sep 8, 2021 - 1 DOGE = 73926 NENG
Doge USD price performance since Jan 4, 2020: 10,569.32%
Neng USD price performance since Jan 4, 2020: 10,569.32%
Both DOGE and NENG achieved 105x on USD price over past 1 year and 8 months. In fact, NENG USD price performance in 2020 beat DOGE after releasing mobile mining feature in summer of 2020. Then in early 2021, DOGE performance beat NENG a lot after Elon tweets. After sharp bitcoin sell off after April, NENG price rallied back hard and achieved parity performance with DOGE today!
Early NENG Performance and Anecdote
In early years of NENG years ago, NENG could have been mined very cheaply at large quantity. Before Nov 2018, NENG was mined mostly by ASIC miners on hundreds to billions of NENG supply. After CPU mining feature enabled on Nov 28, 2018, CPU miners and USB ASIC miners entered conversation. There was story in NENG discord by Krypton, who donated majority of logo bounty that he mined 500 million NENG within 1 hour of reset using a powerful PC in combination with an ASIC. Today, to mine 500 million NENG, miner would need a very powerful ASIC device on high electricity bill, or long long mining period on USB ASIC or android phones.
There were also many sharp sell off in early years so that investors who bought at very cheap price and hodling still today made big profit on NENG at cheap cost. I myself mainly an investor who bought large quantity of NENG at exchange with DOGE because my mining device (CPU, USB ASIC or android) are weak on hashrate. I along with others benefited hugely on this super performance of NENG.
Bright Future Expections
NENG started with ASIC mining, then CPU mining and then mobile mining. At 105x today, NENG is still cheap compared to Dogecoin or Electroneum
Market Cap on USD
Dogecoin (DOGE) - $ 33,180,000,000
Electroneum (ETN) - $ 236,720,000
Nengcoin (NENG) - $ 190,909
If NENG catch up with Electroneum market cap, NENG price would rise 1240x from here. If NENG catch up with dogecoin market cap, NENG price would rise 173800x! Nengcoin price today is still very cheap and has huge potential upward.
Bright future ahead for Nengcoin!
September 08, 2021, 10:41:51 AM
Nengcoin is listed and tracked at CoinRanking
CoinRanking is another popular USD price chart and quote site.
Nengcoin is listed and tracked at CoinRanking:
https://coinranking.com/coin/1N4H6xVjZ%2Bnengcoin-neng
CoinRanking is another popular USD price chart and quote site.
Nengcoin is listed and tracked at CoinRanking:
https://coinranking.com/coin/1N4H6xVjZ%2Bnengcoin-neng
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