Frequently Asked Questions (FAQ)

For instructions on how to connect see the help section. See also our guide on BlockCypher blog.
Yes, you can mine with a CPU. However, it might take several hours to find a single share.
Yes, GPU mining is currently the most profitable way to mine Grin.
Yes.
The block reward is 60 grins.
The Grin block time is set to one minute.
No, we only support email payout currently.
In order to receive grins in your wallet you need to do two things. First, you have to "receive" the transaction in your wallet with the 'grin wallet receive' command. Finally, upload the transaction in your dashboard by clicking the "Finalize Transaction" button. That's it!
Grin requires at least 24 hours (1440 blocks) before the coinbase is transferable.
You can learn more about Grin in the Grin Wiki.
By using a +randomvalue after your email, it is harder for someone to know your account. You don't need to create such specific email account. By default email sent, for example, on satoshi+1234@nakamoto.com lend on satoshi@nakamoto.com.
Your account was created without password. You can only request email payout. If you wish to create a regular account with the same email, simply add a wildcard in your email e.g. satoshi+randomvalue@nakamoto.com and don't forget to specify a password in Stratum!
Make sure you miner is submitting share. It can take a few minutes before your miner appears on your dashboard.
We compute your hashrate based on the number of shares you submitted in the last 10 minutes. If you want to check your effective hashrate (hashrate based on the number of valid shares submitted) on Grinmint, you can do the following:
  • Take N, the number of shares submitted in the last hour.
  • Compute the following: GPS = D*42*N/3600, D is the pool difficulty. Currently 4.
    • Finally, most of the mining software are overestimating your hashrate.
    PPLNG stands for Pay Per Last N Graphs. Everytime we find a block we:
  • Look at the shares submitted in the last hour.
  • Each share is assigned a share value based on its graph weight (C33 is worth more than C32)
  • We make a sum of this weights and we divide the block reward (including transaction fee) by it. This give us a base reward per share regardless of the graph weight.
  • We pay each user by multiplying this base reward per share with the number of shares of a type per block and the share value of this type of share.