World first and only SHA256 coin minable on Android phones
A SHA256 coin minable in Android/CPU/GPU/ASIC




Cheetahcoin

Symbol:  CHTA

Cheetahcoin is a fork of Nengcoin (NENG) on SHA256 using a proof-of-work algorithm with enhanced features to protect against 51% attack and decentralize on mining to allow diversified mining rigs across CPUs, GPUs, ASICs and Android phones.


Mining Algorithm: SHA256 with RandomSpike v1.6.x beta branch. RandomSpike is 3rd generation of Cheetah Effect Algorithm (CEA) on top of SHA256.

2 minute block targets
base difficulty adjustment: every 720 blocks
subsidy halves in 1.05 million blocks (~ 2 to 4 years)
21,000,000,000   total maximum CHTA
10000 CHTA per block at start
Pre-mine: 1%  or 210 million CHTA - reserved for dev fund
                         allocated paid:  100 million CHTA for exchange listing at Shorelinecrypto
                                                 5.105 million for logo bounty
                         dev fund balance:  104.895 million CHTA
ICO: None  
RPCPort:  8536
Port: 8537


Security Mechanism Against 51% Attack

Cheetah effect is a Random Spike Technology™ that was first discovered and introduced during the development of Nengcoin. It has been proven to be a very huge success to prevent 51% attack which most coins in the crypto world are very prone to. The cheetah effect has been battle-tested and proven to be the best way to fully secure a coin network effortlessly, preventing abuses while offering a fair share of mining space for all crypto miners to fully promote decentralization.

reset difficulty = 1
Cheetah difficulty on randomSpike v1.7.x version = 4
Spike difficulty = 100,000,000,000

The Cheetahcoin (CHTA) blockchain auto resets to cheetah difficulty if blocks are not mined after 4 minutes.  The cheetah effect can be explained by the fact that only CPU miners with Cheetah_cpuminer software can mine on Cheetah diff.  Without GPU miners, CHTA is fine.  Without ASIC miners CHTA blockchain is fine too. Without CPU miners, CHTA blockchain will be shut down.

Spike difficulty are assigned randomly at 50% chance to +- 18 seconds (36 seconds windows) of previous block.  When a big ASIC rig attacks CHTA, a spike block is mined, the CHTA algo automatically triggers 51% protection mechanism that all GPU/ASIC miners can only mine at spike difficulty until reset, essentially shutting down almost all GPU/ASIC miners and leaving CHTA minable to CPU miners only.

CHTA blockchain adjust base difficulty every 720 blocks designed for 1 day. In comparison bitcoin adjust base difficulty every 2 weeks and litecoin adjust every 4 days.

Many of Cheetahcoin base difficulty adjustment are expected to be gradual, meaning up or down by 20 to 50%. Sometimes, historically about in 1 week average, or in the spike block mined situation,  CHTA base difficulty should do massive reset  to reset diff (1). Because of restriction of randomSpike imposed on ASICs,  only GPU solo miners or USB ASIC solo miners can mine for millions of CHTA within one day on reset.

Bitcoin Clone - Suitable for Bitcoin Home Hobbyists

Cheetahcoin core wallet continues to maintain version tag of "Satoshi v0.8.8.0" because Cheetahcoin is very much an exact clone of bitcoin plus some mining feature changes with CEA algorithm on v0.8.6 branch. Cheetahcoin is very suitable as lite version of bitcoin for educational purpose on desktop/mobile mining, full node running and bitcoin programming using bitcoin-json APIs.  

Cheetahcoin is very suitable for bitcoin hobbyists who can not , will not spend huge money to run noisy ASIC/GPU mining equipments, but still want to  mine CHTA at home with quiet simple CPU/GPU or with a cheap ASIC like GekkoScience NewPac bitcoin USB miner or bitcoin pod miner on solo mining setup to obtain very decent profitable results. CHTA allows bitcoin enthusiasts to experience full node running, solo mining, CPU/GPU/ASIC for a fun experience at home at cheap cost without breaking bank on equipment or electricity.


CPU Solo Mining on Computers (Windows/Mac/Chromebook/Linux)
Because of Cheetah Effect Algorithm on top of SHA256, Cheetahcoin is CPU Minable. Users can easily set up  full node for mining at Home PC or Mac using our dedicated cheetah software.

Due to difference between SHA256 vs scrypt, Cheetahcoin is more profitable than Nengcoin for CPU mining purposes.  Still, because of high cost of electricity, CPU solo miners on computers are not expected to make profit on CHTA mining. But because most of time cheetah_cpuminer does nothing other than observing and checking for suitable time to jump into mining, the usage of computer CPU resource is quite low.  CHTA CPU mining is very suitable as casual mining on your computer (windows10, Mac, Linux, or Chromebook) while you do your regular browsing. You can also control the usage of CPU by limiting the miner will take when it mines.

The behavior of Cheetahcoin cpu miner on "cheetah_cpuminer" software is very much like a Cheetah hunting for prey in African safari. For most of time Cheetah just hide in the bush from the danger of lions.  Cheetah only jump and chase small preys when timing and target is right.

Youtube Video Tutorial (NewEnglandcoin is Nengcoin old name, but CPU mining method for Cheetahcoin is similar)

How to CPU Mine NewEnglandcoin (NENG) in Windows 10 Part 1
https://www.youtube.com/watch?v=sdOoPvAjzlE
How to CPU Mine NewEnglandcoin (NENG) in Windows 10  Part 2
https://www.youtube.com/watch?v=nHnRJvJRzZg

How to CPU Mine NewEnglandcoin (NENG) in macOS
https://www.youtube.com/watch?v=Zj7NLMeNSOQ


CPU solo mining on Android Phones

Android phone miners are likely to be only group of CPU miners that can achieve profitability even factor in the cost of electricity. Android phone CPU solo mining use the same software "Cheetah_Cpuminer" and "UserLand app".  Please check out the android phone mining guide below:
https://github.com/ShorelineCrypto/cheetahcoin/tree/master/doc/Android_Userland_App

Potential operation challenges for android phone specific:  due to slowness of android phone arm CPU (particularly those old phones) compared to regular x64 intel/amd CPUs in computers, android phone miners might have difficulty for the CHTA wallet to sync wallet, therefore mining dead chain during base difficulty reset.  If too frequent "cheetah jumps" observed during reset, you might want to increase
"--interval" setting to 10  or more (meaning 10 seconds for every checking).  Or simply just shut down cheetah_cpuminer and let CHTA wallet to sync during reset and restart mining after reset is over.

GPU Solo Mining

GPU solo mining during normal days are not profitable, may even obtain much smaller CHTA rewards compared to computer or android phone cpu mining. This is because GPUs can not compete with scrypt ASIC rigs on hashrate.   GPUs can not mine into cheetah diff either so that GPUs can not compete with computers or android phones either.

However, on base difficulty reset day, averaging about once per week, GPU solo mining CHTA can obtain huge rewards, up to millions of CHTA to be mined within one day for several hours.  

One strategy for GPU solo mining CHTA is to run a  full node for CPU mining in your computer.  Because on reset day, CPU mining rewards is very small, you can just shut down the "Cheetah_Cpuminer" on reset day, and change to a different conf file, and then restart CHTA wallet and allow your GPU solo mining CHTA on this same  full node for big rewards. When reset is over, you can shut down your GPU solo mining, and then revert back to your normal CPU solo mining CHTA on Cheetah_Cpuminer software every day.

Update on 2/18/2021 - GPU solo mining is almost over for less powerful GPUs, but maybe still profitable for powerful GPUs. The GPU solo mining results were hit and miss in last several resets.  you can try GPU solo mining but it is tougher game now.

ASIC Solo/Pool Mining

Due to dynamic difficulty nature of Cheetah Effect  Algo on top of SHA256, solo mining is recommended for ASIC rigs.   Further more,
even for mining pools, small mining pool will generate better performance than big SHA256 mining pool because of ASIC restriction on randomSpike.

In general, depending the hashrate of rig, the most profitable base difficulty range is when your rig can mine at slower than 20 seconds per block.  Because of randomSpike severe restriction, the lower diff is not very profitable period for big ASIC rigs. In general, ASIC miners are only doing well when base difficulty is above 10.

USB ASIC Solo Mining

USB ASIC like GekkoScience NewPac USB bitcoin miner are likely to be the most profitable mining rigs on Cheetahcoin. NewPac do very poorly on pool mining, however on solo mining setup on full node setup, USB ASIC can be extremely profitable mining CHTA.

USB ASIC is all around miner during reset, after reset. On reset day,  Gekko NewPac on solo mining mode was reported by member to be able to mine up to 3 millions of CHTA within one day of reset.  After reset, gekko newpac solo miner is also to be known to mine CHTA profitably.

Best Practice for Gekkoscience NewPac USB ASIC on solo mining mode
https://bitcointalk.org/index.php?topic=5309004.msg56464544#msg56464544

How to Run GekkoScience NewPac and Futurebit Moonlander2 in same Linux server
https://bitcointalk.org/index.php?topic=5309004.msg56149050#msg56149050

Decentralization and Community Driven
Cheetahcoin is a decentralized coin just like bitcoin with open sourced license on coin source code. There is no boss or nor a CEO on Cheetahcoin. Nobody nor the dev team owns CHTA.  

We expect cheetahcoin community eventually will take over the coin with elected board members.  Therefore, we as dev do not intend to make decision on this coin solely by ourselves.  It is our expectation that Cheetahcoin community will make majority of decisions on direction of this coin from now on.  We as dev merely view our-self as technical support and software developer of this coin while providing CHTA a paid listing at ShorelineCrypto Exchange at launch using pre-mine.



Milestones

• Dec 28,2018 - Cheetah_Cpuminer for Nengcoin was released. The meme of Cheetah on randomSpike algo came alive
• Jan 9,2021 - Nengcoin v1.6.x beta branch Released for fixing big CPU miner timestamp attack
• Jan 12,2021 - Cheetahcoin bitcointalk Ann launched on randomSpike v1.6.x fork on SHA256
• Jan 15,2021 - Cheetahcoin v1.6.0.0 github and wallet on windows10/macOS released
• Jan 16,2021 - Cheetahcoin v1.6.0.1 github and wallet released - 9 Distros of Linux
• Jan 18,2021 - Cheetahcoin v1.6.0.2 Released for Android Phone Mining with UserLand App
• Jan 20,2021 - Cheetahcoin (CHTA) is listed at ShorelineCrypto Exchange for live trading
• Jan 24,2021 - Cheetahcoin v1.6.0.3 Released - Chromebook x64/arm CPU Mining Supported
• Jan 31,2021 - Cheetahcoin v1.6.0.4 Released - Linux on Arm Devices Supported
• Mar 19,2021 - Logo Bounty Winner Announced by Community Commission, Approved for Next Wallet Release
• Apr 18,2021 - Cheetahcoin v1.7.0.0 Released with New Logo/Hardfork at Height  216200

Proposal for v1.7.x Hard Fork with New Logo

• Security Improvement by Raising Cheetah Diff
• Android Phone Mining Scaling Up

Details of v1.7.x Hard Fork Upgrade
    1. New Logo from the top logo bounty winner – to be determined
    2. Raise cheetah difficulty by 10x.
Full Text:
https://github.com/ShorelineCrypto/cheetahcoin/releases/download/v1.7.x_hardfork/CHTA_v1.7.x_Harfork_Proposal.pdf

Community Web
http://www.cheetahcoin.org

Reddit
https://www.reddit.com/r/cheetahcoin/

Discord
https://discord.gg/WgXrgSYrBr

Twitter
https://twitter.com/official_CHTA

Explorer
https://umine.eu/explorer/CHTA
https://cfpool.eu/explorer/CHTA
http://chtaexplorer.mooo.com:3002/

Step by step guide on how to setup an explorer:
https://github.com/ShorelineCrypto/chtaexplorer

Github
 https://github.com/ShorelineCrypto/cheetahcoin

Wallet

Windows10 wallet:
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.0

MacOS Wallet (10.11 El Capitan to Catalina):
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.0

MacOS Big Sur:
https://bitcointalk.org/index.php?topic=5309004.msg56246541#msg56246541

Linux x64 Wallet (Ubuntu/Linux Mint, Debian/MX Linux, Arch/Manjaro, Fedora, openSUSE, Solus):
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.1

Linux arm Wallet (Ubuntu/Debian):
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.4

Android with UserLand App (arm64/armhf) step by step wallet installation web guide:
https://github.com/ShorelineCrypto/cheetahcoin/tree/master/doc/Android_Userland_App

Android (arm64/armhf) actual wallet files which includes the guide text file and installation scripts:
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.2

Chromebook step by step wallet installation web guide:
https://github.com/ShorelineCrypto/cheetahcoin/tree/master/doc/Chromebook

Chromebook actual wallet x64/arm wallet files and scripts:
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.7.0.3


Addnode ip address for the wallet to sync faster, checkout discord channel "live-nodes" for latest live nodes IPs.

Cheetah CPU Miner Software
github branch of "chta" of below repos:
https://github.com/ShorelineCrypto/cheetah_cpuminer/tree/chta

Under command line with git. run below to access this branch for CHTA:

Or download directly on zip file of "chta-beta2" release:
https://github.com/ShorelineCrypto/cheetah_cpuminer/releases/tag/chta-beta2

ASIC/GPU Mining Pools
Warning to Big ASIC Miners
Due to dynamic difficulty nature of Cheetah Effect  Algo on top of SHA256, solo mining is recommended for ASIC/GPU miners.   Further more,
even for mining pools, small mining pool will generate better performance than big NENG mining pool because of randomSpike restriction.

The set up configuration of CHTA for SH256 pool mining is same as a typical normal SHA256 coin.  In other word, CEA on SHA256 algo is backward compatible with SHA256 algo.  Because ASIC/GPU miners rely on CPU miners for smooth blockchain movement, checkout below WARNINGs to All ASIC miners (warning was for NENG on scrypt, should be same for CHTA on SHA256) before you decide to dump big SHA256 ASIC hash rate into CHTA mining.

(1) Original Dynamic Difficulty of CEA algo Warning:
https://bitcointalk.org/index.php?topic=5027091.msg48324708#msg48324708
(2) New Warning on RandomSpike
Spike difficulty (244k) introduced in RandomSpike served as roadblocks to instant mining and provide security against 51% attack risk. However, this spike difficulty like a roadblock that makes big ASIC mining less profitable. In case of spike block to be mined, the spike difficulty immediately serve as base difficulty, which will block GPU/ASIC miners effectively and leave CPU cheetah solo miners dominating mining almost 100% until next base difficulty reset.

umine.eu
https://umine.eu/

CryptoFan pool
https://cfpool.eu/



Exchange

ShorelineCrypto
https://shorelinecrypto.com/market/DOGE-CHTA

Latest News
Apr 22, 2021 - Cheetahcoin v1.7.0.4 Released - Linux Arm Device
https://bitcointalk.org/index.php?topic=5309004.msg56844029#msg56844029

Apr 22, 2021 - Cheetahcoin v1.7.0.3 Released - Chromebook on x64/arm
https://bitcointalk.org/index.php?topic=5309004.msg56839863#msg56839863

Apr 21, 2021 - Cheetahcoin v1.7.0.2 Released -  Android Wallets on Userland App (arm64/armhf)
https://bitcointalk.org/index.php?topic=5309004.msg56832337#msg56832337

Apr 20, 2021 - Cheetahcoin v1.7.0.1 Released -  9 Linux Distros Wallets on x64
https://bitcointalk.org/index.php?topic=5309004.msg56824065#msg56824065

Apr 18, 2021 - Cheetahcoin v1.7.0.0 Released - New Logo + Hard Fork at Height 216200
https://bitcointalk.org/index.php?topic=5309004.msg56815112#msg56815112

Apr 15, 2021 - Block-bot released on Nengcoin/Cheetahcoin discord
https://bitcointalk.org/index.php?topic=5309004.msg56789509#msg56789509

Mar 19, 2021 - Logo Bounty Winner Announced by Community Commission - Approved for Next Wallet Release
https://bitcointalk.org/index.php?topic=5309004.msg56607466#msg56607466

Feb 8, 2021 - Cheetahcoin Logo Bounty Project Started
https://bitcointalk.org/index.php?topic=5309004.msg56303411#msg56303411

Jan 31, 2021 - Cheetahcoin v1.6.0.4 Released - Linux on Arm Devices Supported
https://bitcointalk.org/index.php?topic=5309004.msg56238704#msg56238704

Jan 24, 2021 - Cheetahcoin v1.6.0.3 Released - Chromebook Mining on both x64/arm
https://bitcointalk.org/index.php?topic=5309004.msg56179709#msg56179709

Jan 18, 2021 - Cheetahcoin v1.6.0.2 Released - Android Phone mining with UserLand app
https://bitcointalk.org/index.php?topic=5309004.msg56130522#msg56130522


Jan 16, 2021 - Cheetahcoin v1.6.0.1 Released - 9 Linux Distros on x64
https://bitcointalk.org/index.php?topic=5309004.msg56115261#msg56115261

Jan 15, 2021 - Cheetahcoin v1.6.0.0 github source code and windows10/MacOS wallets released
https://bitcointalk.org/index.php?topic=5309004.msg56107064#msg56107064

targeting this coming weekend for windows10 wallet release and github release.  of course, I have day jobs that are busy on time schedule, Things could be delayed, but hopefully no more than a few days of delay.

MacOS wallet has problem with latest homebrew release.  My original plan was to release mac and windows10 wallets together. But I may have to drop Mac wallet and delay it for later time if I can not resolve homebrew issue quickly.

No. That was dead coin 7 years ago by someone else.  The new github is going be at:

https://github.com/ShorelineCrypto/cheetahcoin

Not released yet. Wait for few more days.  Planned in the coming weekend. 

macOS wallet update: tried today and worked. The next release will have both mac and windows10 wallet.

Cheetahcoin v1.6.0.0 github source code and windows10/MacOS wallets released

Cheetahcoin v1.6.0.0  windows10/MacOS wallet is released at:
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.6.0.0

github source code is also released at:
https://github.com/ShorelineCrypto/cheetahcoin

Amazing Attack Compilation - Cheetah vs Ostrich etc preys
This clip features the fastest animal in the world, the Cheetah! It can reach speeds of over 80 mph – 130 km/h and is incredibly fast, graceful and agile. Truly amazing to watch it inaction. This clip features some of the most incredible cheetah attacks including cheetah vs wildebeest, cheetah takes out warthog, cheetah chases down ostrich and an incredible speed showdown between a cheetah and an impala gazelle. Amazing footage, Enjoy!

https://www.youtube.com/watch?v=LXfnwJxXT6I

DISCORD conversation on nature of randomSpike, in wallet mining

CHTA v1.6.0.1 Released - 9 Linux Distros on x64


Linux wallet of 9 distros on x64 platform has been released as Cheetahcoin v1.6.0.1 at:
https://github.com/ShorelineCrypto/cheetahcoin/releases/tag/v1.6.0.1

Supported Linux x64 distros:
Ubuntu/Linux Mint, Debian/MX Linux, Arch/Manjaro, Fedora, openSUSE, Solus

cheetah_cpuminer update - a better print out on Miner Cheating

cheetah_cpuminer had update, a better print out.  For git users, do this to update:
Or download new beta branch:
https://github.com/ShorelineCrypto/cheetah_cpuminer/releases/tag/chta-beta2

The new cheetah_cpuminer on chta beta branch has no change on mining. It just has better and more informative info on miner cheating. Based on how much seconds ahead,  and with knowledge of randomSpike algo, we can guess which miners (CPU ASIC GPU) are doing timestamp manipulations.

Check out mining board in discord for detailed discussion on this issue.