Refund Policy

Revocation right for consumers
(A ‘consumer' is any natural person who concludes a legal transaction which, to an overwhelming extent, cannot be attributed to either his commercial or independent professional activities.)

Instructions for revocation

Revocation right
You have the right to revoke this contract within 14 days without specifying any reasons.
The revocation period is 14 days with effect from the day,

- on which you or a third party nominated by you, which is not the carrier, had taken possession of the products, provided you had ordered one or more products within the scope of a standard order and this/these product/products is/are delivered uniformly;

- on which you or a third party nominated by you, which is not the carrier, had taken possession of the last product, provided you had ordered several products within the scope of a standard order and these products are delivered separately;

To exercise your right of withdrawal, you must inform us (Bolt Engineering GmbH, Basler-Tor-Str. 76, 76227 Karlsruhe, Telephone number: +491735232928, E-Mail address: info@solomining.de) by means of a clear declaration (e.g. a letter sent by post, or an e-mail) of your decision to withdraw from this contract. You can use the attached model withdrawal form for this purpose, which is, however, not mandatory.

In order to safeguard the revocation period, it is sufficient that you send the notification about the exercise of the revocation right before the expiry of the revocation period.

Consequences of the revocation

If you revoke this contract, we shall repay all the payments, which we received from you, including the delivery costs (with the exception of additional costs, which arise from that fact that you selected a form of delivery other than the most reasonable standard delivery offered by us), immediately and at the latest within 14 days from the day on which we received the notification about the revocation of this contract from you. We use the same means of payment, which you had originally used during the original transaction, for this repayment unless expressly agreed otherwise with you; you will not be charged any fees owing to this repayment.

We can refuse the repayment until the products are returned to us or until you have furnished evidence that you have sent the products back to us, depending on whichever is earlier.

You must return or transfer the products to us immediately and, in any case, at the latest within 14 days with effect from the day on which you inform us of the revocation of this contract. The deadline is maintained if you send the products before the expiry of the 14 day deadline.

You bear the direct costs for returning the products.

You must pay for any depreciation of the products only if this depreciation can be attributed to any handling with you that was not necessary for checking the condition, features and functionality of the products.

Criteria for exclusion or expiry

The revocation right is not available for contracts


- for delivery of products, which are not prefabricated and for whose manufacturing an individual selection or stipulation by the consumer is important or which are clearly tailored to the personal requirements of the consumer;
- for delivery of products, which can spoil quickly or whose use-by date would be exceeded quickly;
- for delivery of alcoholic drinks, whose price was agreed at the time of concluding the contract, which however can be delivered 30 days after the conclusion of the contract at the earliest and whose current value depends on the fluctuations in the market, on which the entrepreneur has no influence;
- for delivery of newspapers, periodicals or magazines with the exception of subscription contracts. The revocation right expires prematurely in case of contracts


- for delivery of sealed products, which are not suitable for return for reasons of health protection or hygiene if their seal has been removed after the delivery;
- for delivery of products if they have been mixed inseparably with other goods after the delivery, owing to their condition;
- for delivery of sound or video recording or computer software in a sealed package if the seal has been removed after the delivery.

Specimen - revocation form

(If you wish to revoke the contract, please fill up this form and send it back to us.)

- To Bolt Engineering GmbH, Basler-Tor-Str. 76, 76227 Karlsruhe, Email address: info@solomining.de :

- I/we (*) herewith revoke the contract concluded by me/ us (*) regarding the purchase of the following products (*)/
the provision of the following service (*)

- Ordered on (*)/ received on (*)

- Name of the consumer(s)
- Address of the consumer(s)
- Signature of the consumer(s) (only in case of a notification on paper)
- Date

(*) Cross out the incorrect option.

Our Mission

At Solomining, we are driven by the vision to empower Bitcoiners and businesses across Germany and Europe to actively contribute to the decentralization of the global Bitcoin network. Through our offering of innovative Bitcoin solo mining devices, we make it possible for everyone to contribute to securing the Bitcoin blockchain—because every miner counts.

Our mission is founded on the belief that decentralization is the key to Bitcoin’s security and longevity. Every miner counts in the collective effort to distribute the global Bitcoin hashrate, ensuring a safer and more resilient network for everyone.

Special thanks go to Skot from Open Source Miners United (OSMU), the mastermind behind the development of the devices we sell. Skot’s dedication, and that of all the other developers in open-source mining, is at the core of what we do. We support open-source developers’ efforts by donating $5 from each miner sold to OSMU. For more information, check out the official Bitaxe Project page!

At Solomining, we believe in fostering a decentralized Bitcoin ecosystem. Whether you’re an individual solo miner wanting to make a difference or you run a shop seeking competitive B2B solutions—Solomining is your partner in securing the future of Bitcoin mining. Together, we can decentralize and strengthen the Bitcoin network—step by step.