We get the same questions in onboarding calls every week. Here are the answers, written plainly. If you have a question that is not here, email max@openmine.io.
No. Open Mine is a hosted miner marketplace. Listings are tied to specific hosted miners, provider locations, hosting terms, and delivery records instead of a generic promise of future output.
The provider keeps physical custody and operates the ASIC in its facility. Open Mine gives the client a common marketplace, routing, billing, reporting, and support workflow around that hosted miner; mined BTC is paid by the client's pool according to the pool setup, not distributed by Open Mine.
A miner on Open Mine is tied to a specific physical ASIC identity, a specific provider, and listed commercial rates. The marketplace record follows that miner through purchase, billing, delivery reports, lifecycle state, and any later transfer path.
The important difference is traceability: you can see which provider is responsible, the commercial price and hosting rate, and what delivery record is being used for billing and reports.
Open Mine uses Stratum Router delivery data when it is available, then turns that into reports and ledger entries. Billing and support review are based on those records together with the listing's commercial rates and provider-of-record responsibility.
That does not remove mining or provider risk, and it does not promise nameplate output every day. It gives clients and operators a shared record for delivered hashrate, billing review, provider reputation, and support instead of relying only on screenshots or spreadsheets.
You can list any miner you own for resale on the marketplace at any time: at a fixed price, in an auction, or both. Listing changes nothing about the miner itself: it stays yours, and its operating and billing state stay as they are, until it is sold. On completion the buyer takes title and assumes the hosting arrangement on the same locked terms, and you are released from obligations that accrue afterwards. A marketplace fee applies to a resale and is shown before you confirm.
Whether and at what price a miner sells depends on buyer demand and on its operating record: the buyer reviews the same provider-of-record delivery history that you see. A hosted ASIC is not designed for one-click migration to another datacenter; besides resale, the Terms provide for physical pickup at the provider's facility for a fee the provider sets.
The hosting provider keeps physical custody. Each miner remains in the provider datacenter for the hosting contract. Open Mine routes pool traffic, records delivery, tracks marketplace ownership state, and settles the ledger; it does not warehouse or repair client hardware.
Hosting is billed daily from your prepaid USD balance. Listing pages show the nameplate daily cost: rated_kW x 24 x $/kWh.
The settlement job uses Stratum Router delivery data when it is available. Reports and ledger entries show how each charge was calculated, and any support review is handled against those records and the listing terms.
Every marketplace offer includes a provider-backed lifetime warranty. The provider operates, repairs, and maintains the hosted miner; Open Mine manages routing, billing records, and support.
Automatic failover routes your allocation within that provider's available fleet while a unit is repaired or replaced. Delivery can still vary because of maintenance, curtailment, pool issues, or a provider-wide capacity reduction.
Yes. You add a pool account in your dashboard: choose a pool from the list or enter a custom Stratum address, and give the username that pool expects (for some pools it is a Bitcoin address). The Stratum Router at stratum.openmine.io then sends the hashrate of every miner you assign to that account. You can assign a miner to another pool account later; changes for the same miner may be limited to one per waiting period.
Production routing uses Stratum V1 over a pool's stratum+tcp address. Support for other protocols will be announced only when it is available.
Not for ordinary marketplace browsing and sign-in. Accounts start with email or an email-bearing OAuth provider; Telegram can be linked afterward as a faster sign-in method.
Providers, payment partners, larger contracts, or risk review may require KYB/KYC or sanctions checks. The platform ledger is USD-denominated even when a top-up uses crypto or another supported payment rail.
Yes. Your balance is a prepaid, non-interest-bearing service credit — you use it to buy miners and pay hosting, and any unspent balance is refundable. It is not a deposit account and earns no interest, but you are not locked in: you can request your unspent balance back at any time.
Request a refund of unspent balance from the Balance page. Submitting a request locks that amount so it cannot be double-spent, and opens a review. The team verifies your original payment and sends the refund through an appropriate rail — usually the one you deposited on — and may confirm that the destination matches the original source of funds. Actual network or transfer fees may be deducted.
Refunds are normally completed within 30 days. If a request is declined, the amount is credited back to your balance and we tell you why. Where the law requires — for example a sanctions or anti-money-laundering check — a refund can be delayed or withheld.
You can still work directly with a provider. Open Mine is useful when you want the provider relationship to behave like a marketplace workflow instead of a one-off private deal: