What is a Grin ?

“Electronic transactions for all. No censorship or restrictions.”

Grin empowers anyone to trade or save modern money without fear of external control or oppression. Grin is designed for the next few decades, not just tomorrow. Grin is meant to be accessible to everyone, regardless of borders, culture, skills or access.

Anonymous: Grin has no amounts and no addresses. Transactions can simply be aggregated. To hide where a newly created transaction came from, it is privately forwarded between peers (a "random walk") before being publicly announced.

Scalable: MimbleWimble utilizes cryptography to delete most past transaction data. This ensures that Grind will not collapse under its own weight in the long run.

Grin is developed in the open by developers distributed around the world. It is not controlled by any company, foundation or individual. The coin distribution is designed to be as fair as possible (but not free).

Community Initiatives

Floonet
Grin’s last long-running testnet, Floonet, has just been released. Floonet will continue to be maintained for the foreseeable future and used to test protocol updates before they hit the mainnet.
MainNet, forward!

We are currently working towards stabilizing Grin for mainnet release around January 15, 2017.
Check out our list of features and jump in.

Crowdfunding Security Audit

Grin is approaching its final stages of development before the cryptocurrency network (mainnet) is launched. In order to do so safely, the Grin codebase needs to undergo a security audit.
Learn how we conduct security audits and funding. (https://grin-tech.org/sec_audit)

Grin Specifications

- Algorithm: Cuckoo Cycle Pow https://github.com/mimblewimble/grin/blob/master/doc/pow/pow.md
- Block Time: 1 minute – Block Reward: 60 GRIN
– Block Reward halving schedule: none
– Total Coin Amount: Unlimited – Pre-stake: No – Founder’s Reward: No – ICO: No – Masternodes: No

Grin Background

– Website https://grin-tech.org/
– Github https://github.com/mimblewimble/grin/releases
– Original whitepaper https://download.wpsoftware.net/bitcoin/wizardry/mimblewimble.txt
– Whitepaper by Andrew Poelstra https://download.wpsoftware.net/bitcoin/wizardry/mimblewimble.pdf

Rabbit Hole

- Grin4Bitcoiners https://github.com/mimblewimble/grin/blob/master/doc/grin4bitcoiners.md
– Mimwim chain format https://github.com/mimblewimble/grin/blob/master/doc/intro.md
– Cuckoo Cycle PoW https://github.com/mimblewimble/grin/blob/master/doc/pow/pow.md

Get involved

– Gitter https://github.com/mimblewimble/grin
– Twitter https://twitter.com/grinmw
– Forum https://www.grin-forum.org/
– Discord https://discord.gg/Z3sEfEU
– Mailing list https://launchpad.net/~mimblewimble

Grin Mining

https://www.mwgrinpool.com – Open Source Grin Mining Pool Implementation – About: https://medium.com/@blade.doyle/mwgrinpool-com-a-grin-mining-pool-345d67cb8e98
– Linux GPU Mining Guide: https://medium.com/@blade.doyle/gpu-mining-on-mwgrinpool-com-how-to-72970e550a27
– Linux CPU Mining Guide: https://medium.com/@blade.doyle/cpu-mining-on-mwgrinpool-com-how-to-efb9ed102bc9
– Payments Guide: https://medium.com/@blade.doyle/configure-payments-on-mwgrinpool-com-how-to-7b84163ec467
– GitHub: https://github.com/grin-pool/grin-pool

Grin Mining Tutorial on Spark Pool

Note: The Grin mining address is an email account, and the wallet address format is: email address/rigid (for example: [email protected]/rig-1)

Please be sure to ensure the security of your email account. It is recommended to enable two-step verification. If the email account is lost, it may result in loss.

For example, your QQ email address can be used, which is commonly used.
For example:
[email protected]/rig-1
[email protected]/rig-2

Mining software download

This is currently a test network, and the mining software may be updated when it is officially launched.

Official recommended download address:

https://github.com/mozkomor/GrinGoldMiner/releases

If you cannot download from the official website, use the following address

Linux

http://sparkpool-public-files.oss-cn-hangzhou.aliyuncs.com/grin/beta2/GGM_Floonet_Linux64_BETA2.tar.gz

Windows:

http://sparkpool-public-files.oss-cn-hangzhou.aliyuncs.com/grin/beta2/GGM_Floonet_Win64_BETA2.zip

1. Windows system

1. Download the required software

• Download Microsoft.net core and install:

Download Link

• Download the mining software and unzip it:

Download Link

2. Double-click to open GrinGoldMinerCLI, wait a moment to enter the mining pool selection page:

3. Enter 3 and press Enter, enter the mining pool server grin.sparkpool.com:6666 and press Enter

4. Enter N to turn off TLS

5. Enter the payment email (you can add the mining machine name at the end, such as [email protected]/rig0. Please ensure the email is safe. Losing the email may cause the loss of coins )

6. Enter password (can be left blank)

7. Configuration is complete, press Enter to close

8. Open GrinGoldMinerCLI again to start mining

9. If there is a problem with the configuration, please delete config.xml and start over

2. Linux system

1. Create a working directory

 mkdir grin && cd grin

2. Download mining software:

 wget https://github.com/mimblewimble/grin-miner/releases/download/0.5.1/grin-miner-0.5.1-476582543-linux-amd64.tgz

3. Unzip

 tar -zxvf grin-miner-0.5.1-476582543-linux-amd64.tgz

4. Enter the mining software directory

 cd grin-miner-0.5.1

5. Clear the built-in configuration file

 echo > grin-miner.toml

6. Open the configuration file with a text editor and write the configuration as needed, including the payment mailbox, server address and graphics card configuration. Here we use nano editor as an example, but you can also use other text editors. There is a configuration file example at the end of the article that you can copy and paste.

 nano grin-miner.toml

7. Press ctrl+x, a save confirmation prompt will pop up at the bottom, press Y to confirm

8. Press Enter to confirm the file name

9. Start the mining software

 ./grin-miner

Configuration Files

• stratum_server_addr is the mining pool server address

• stratum_server_login is the payment mailbox

• The mining.miner_plugin_config project contains the graphics card configuration.

The following is the situation with two 1070 graphics cards. If there are more, copy the last 4 lines, paste them once for each additional graphics card, and increase the value of device.

 [logging]
log_to_stdout = true
stdout_log_level = "Debug"
log_to_file = false
[mining]
run_tui = false
stratum_server_addr = "grin.sparkpool.com:6666"
stratum_server_login = "[email protected]"
stratum_server_tls_enabled = false
miner_plugin_dir = "plugins"
[[mining.miner_plugin_config]]
plugin_name = "cuckaroo_cuda_29"
[mining.miner_plugin_config.parameters]
device = 0
cpuload = 1
ntrims = 176
genablocks = 4096
genatpb = 128
genbtpb = 128
trimtpb = 512
tailtpb = 1024
recoverblocks = 1024
recovertpb = 1024
[[mining.miner_plugin_config]]
plugin_name = "cuckaroo_cuda_29"
[mining.miner_plugin_config.parameters]
device = 1

RTX2080(Ti) can try another configuration (not necessarily better)

 [[mining.miner_plugin_config]]
plugin_name = "cuckatoo_mean_cuda_rtx_31"
[mining.miner_plugin_config.parameters]
device = 0
expand = 2
cpuload = 1
ntrims = 176
genablocks = 4096
genatpb = 128
genbtpb = 128
trimtpb = 512
tailtpb = 1024
recoverblocks = 1024
recovertpb = 1024

3. Check the income

Log in to Spark Pool’s homepage https://sparkpool.com/ to view Grin earnings

4. Extract Grin

to be continued