Category Archive Tips

ByLin

THE alternative to buying anonymous Bitcoins (and other cryptocurrencies)

There are several ways to obtain anonymous Bitcoins and other coins, which also have several vulnerabilities. We would like to briefly explain these ways and the associated risks here.

Basically, there are 3 methods to buy Bitcoins anonymously:

  • Using a mixer
  • Buying at a Bitcoin/Crypto ATM
  • Mining coins yourself

Bitcoin and other currencies, as everyone knows, are based on a blockchain – meaning all previous transactions are publicly viewable

This becomes a problem especially when using mixers, as the amount deposited and paid out can also be tracked across multiple (and even different) wallets. Better mixers therefore rely on time delay and splitting into multiple transactions. But even these transactions could be tracked with enough computing power and know-how one day.

The alternative is to buy from a vending machine. Unfortunately, however, there have been many changes in this area recently as well, and for higher amounts, deposits are no longer possible without proper proof of identity.

Crypto ATM

Crypto-ATM

In addition, there is always the risk of a logged IP address when signing a transaction on the network

So what is the safest solution to obtain anonymous Bitcoins and other cryptos?

The solution is relatively simple: simply mine the coins yourself!

This creates almost new coins, so to speak, “almost” because the mining pool receives the coins first, of course, which are then paid out to the miners.

How is the problem with the IP address solved?

Here the use of a VPN is a good solution. Miners (of all manufacturers) also work with the appropriate router via a VPN (we also have a separate article on this). In addition, the popular Electrum can also be used as a wallet, e.g. for Bitcoin. The advantage of Electrum as a wallet is the availability of the TOR network, i.e. a connection is never established directly to the BTC network

All that is required is to download and launch the TOR browser. In Electrum, the proxy is then activated under the settings.

Electrum Tor Proxy

Electrum Proxy Settings

A logging of your real IP is thus excluded both when mining and when paying (with Electrum at BTC).

The only remaining risk is with your VPN provider – which can of course be reduced by a good choice.

How can I get a miner at a reasonable price?

The newer models with high efficiency are of course more expensive, but if the goal is anonymity, profitable efficiency doesn’t even need to be there. Purely logically, it is enough if the cost of electricity can be converted into anonymous BTC, ETH, etc.

Of course, older and used models from Bitmain and Innosilicon are perfect for this. Therefore, we at Millionminer not only offer new goods, but also used miners (to the store – click here). Of course, our miners are tested again for function before shipping and the test is documented by video.

ByLin

Bitcoin Mining & Co: How to mine Cryptocurrencies over a VPN

For some users, it may be necessary to conduct Bitcoin mining via a VPN in order to bypass network blocks or simply to “divert” attention from the real connection.

Basically, mining Bitcoin, Ethereum and other cryptocurrencies does not generate a lot of data traffic. This means that it is possible to handle the data traffic via a VPN without any problems.

The problem to be solved is much more due to the fact that miners such as the Bitmain antminer and all other models cannot establish a VPN connection by themselves.

To solve this problem two things are needed:

  1. A VPN server
  2. A router that can act as a VPN client

There are numerous ready-made solutions for a VPN server, such as from NordVPN. Setting up your own VPN server on a rented VPS with e.g. Wireguard should normally not be a problem either.

It gets a bit more difficult when choosing a suitable router. Most routers offer VPN server functionality for IPSec VPNs, but most routers do not offer VPN client functionality.

At this point, we can recommend the inexpensive travel routers of the GLiNet brand. These routers are already available from about 30 USD and of course they can work as OpenVPN and Wireguard VPN clients. VPN rules can also be used to determine which clients on the network should be tunneled through the VPN (and which should not). It is also possible to cut the Internet connection if the VPN connection cannot be established or is disturbed (kill switch).

The simplest solution would be to buy a cheap VPN router. This can then be connected to the existing router and the VPN set up on the router. After this, the ASIC miner is connected to the VPN router and all miner traffic is routed through the VPN.

Bitcoin-Miner-VPN-Settings

Sample settings for a Bitmain Antminer

ByLin

Bitmain Antminer initial setup with Antpool

As the proud owner of a Bitmain cryptominer, you can look forward to a very simple setup. In the tutorial below, we will explain how to log in to Antpool and get your miner up and running.

1. Basic

First of all, we would like to point out that your cryptominer consumes a lot of power, so you will need an appropriate power supply. We therefore recommend cold appliance power cables with at least 1 mm² cable cross-section.

Do not use cheap power cables which are already conspicuous by their much too soft sheathing. The printed cable cross section of 0.75 mm² is not reached in reality and a cable fire can occur.

For this reason, we have simulated a cable fire under safe conditions (dangerous – do not copy!):

verschmortes Kabel nach einem Kabelbrand

Scorched power cable

In the event of a cable fire, a load fuse will not necessarily trip and sparks will fly.

Therefore, the following also applies here: Do not use unnecessary extension cables or make sure that the cable cross-section is appropriately large and place the miners in a safe environment. A functioning grounding is also useful for the metal housings in addition to a RCD.

For our tutorial, we used a Bitmain Antminer S9j. However, the web interface on Bitmain is identical or very similar for all miners.

2. Connecting the Miner

Bitmain Antminer S9j

Bitmain Antminer S9j

The Antminer consists of a housing with the ASIC modules and a controller board with LAN connection. The power connectors of the ASIC modules protrude from the housing and are connected to the controller board. The housing forms an elongated air duct with a fan on the front and a fan on the back. This pulls cool air in a stream through the case and ensures adequate cooling

When connecting the power supply, make sure that the cables are plugged in the correct direction. For this, each connector and cable has a clip, this clip should snap once in place.

For larger miners with more ASIC boards and multiple power supplies, there is a bit more to consider. For example, connecting different power supplies on the same ASIC board is not recommended and may damage the hardware. Therefore always connect only the power cables from one power supply to one ASIC module.

After all cables of the power supply have been connected to the ASIC modules and the controller board, the miner can also be connected to a router or switch and then to the power supply. Once the power cable is plugged in, the miner will automatically boot, running the fans at maximum speed.

3. Registration in AntPool

Now we can start (preferably before we switch on the miner) the registration on AntPool.

Registration is possible on antpool.com by clicking on “Register”. In the course of the registration only an e-mail address has to be entered, which will be confirmed with a code sent by e-mail.

After successful registration, a new worker account must be added by clicking on “Worker” -> “Create a Sub-Account”.

Antpool Sub-Account erstellen

Note: The name of the sub-account must not yet exist in the AntPool. Therefore, if an already assigned user name is selected, the creation of the sub-account will fail.

After the sub-account has been created, it can be configured directly. To do this, call “Setting” and next to the corresponding sub-account “Configure”. In the following view, the wallet address for withdrawals can be changed after clicking on “edit” and saved by clicking on “Confirm”.

In our tutorial, we selected the username “millionminer-test”.

AntPool Sub-Account konfigurieren
AntPool Sub-Account Einstellungen ändern
AntPool Wallet-Auszahlungsadresse ändern

4. Setting up the Bitmain AntMiner

After we have wired our AntMiner and created an account with AntPool we come to the setup of the cryptominer itself.

According to this, the miner should be connected to the router / switch and turned on

Note: If the fans do not work, the miner should be turned off and the fans replaced.

Antminer LAN-Anschluss eingeschaltet

Afterwards the IP address of the AntMiner must be determined, this goes fastest by searching in the router in the appropriate menu for clients in the local network. There the miner will be listed similar to the following screenshot:

In our tutorial, the miner is running at IP address 192.168.1.244 – we can enter this address in the address bar of any browser, such as Firefox or Chrome.

In the following, we are prompted to enter the Antminer default username and password.

The username is root and the password is also root – of course, it is recommended to adjust this at the end.

After that the overview page of the web interface is displayed, here we switch to the tab “Miner-Configuration”.

Afterwards the three different addresses of the AntPool can be entered. The workername is always composed of the user name, a dot and a freely chosen worker name. In our example the user name is millionminer-test and the worker name is 10×32, so the worker name to be entered is

millionminer-test.10x32

If several miners or workers are operated under the same user name, the miners could also be named as follows:

millionminer-test.miner1
millionminer-test.miner2
millionminer-test.miner3
millionminer-test.miner4
millionminer-test.miner5

The three addresses of the AntPool are:

stratum+tcp://ss.antpool.com:3333
stratum+tcp://ss.antpool.com:443
stratum+tcp://ss.antpool.com:25

In our example miner we therefore enter the following values and confirm the entry with “Save&Apply”.

AntMiner Pool URLs eingeben

For clarification, the username and workername have been highlighted once again.

After some time the ASIC modules start working and connect to the pool.

The individual workers are then visible under the tab “Worker” in the AntPool (can take up to 15 minutes).

The status of the ASIC modules can be checked via the “Miner Status” tab in the miner’s web interface.

The most important information here is:

GH/s (avg), ASIC status and chain – where GH/s (avg) represents the average hash performance and ASIC status reflects the status of the individual ASIC chips on the ASIC modules. A status of 00000000 is very good and means that all chips are working properly.

The rate of hardware errors (HW), on the other hand, can also be ignored, because these hardware errors are usually corrected automatically by the software of the miner.

AntMiner-Status Übersicht in der Weboberfläche

The chain number becomes interesting when it comes to identifying defective boards, because the chain number corresponds to the number of the corresponding connector on the controller board:

Bitmain Controllerboard Anschlussbezeichnungen

5. Good to know

Some readers might have noticed that in our test we used only two active ASIC modules in a miner with three ASIC modules. Such a configuration by unplugging the unneeded ASIC modules is easily possible on many Bitmain models.

It is also possible to adjust the power consumption and performance up or down under “Miner Configuration”. In our example we used the power saving mode, because we only wanted to demonstrate the setup of the miner.

Still have questions? Just write an answer in the comments!

6. Webinterface

Last but not least, we have summarized the entire web interface in a short video.