Introduction

Miners can use eligible coins already earned through mining as collateral to borrow USDT, monitor the loan’s loan-to-value (LTV) ratio, and repay the debt to release the collateral. ViaBTC’s Collateral-Pledged Loans is a financial service designed for miners, providing access to liquidity against supported crypto holdings to help cover expenses such as electricity and miner maintenance.

Mining operations typically earn crypto assets, while operating costs are frequently due in fiat currency or stablecoins. Borrowing against mined coins can address this funding gap without an immediate sale, but it adds interest costs and liquidation risk. This article explains the process using ViaBTC’s documented product rules. It is educational material, not financial or investment advice.

Mined Coins as Collateral, Not Future Mining Income

The distinction is between coins already held in an account and coins a mining operation expects to earn. ViaBTC’s documented borrowing process requires miners to select and submit supported assets from an available account balance. Expected mining output is not an available balance that can be pledged through this process (Crypto Loans Operation Guide).

Future production is also uncertain. Bitcoin’s block subsidy fell from 6.25 BTC to 3.125 BTC at the fourth halving on April 20, 2024, and declines at subsequent halvings (Bitcoin.org). Network difficulty, transaction fees, and equipment uptime can affect coin-denominated earnings. Electricity prices affect operating costs and may indirectly affect production if miners change their operating hours. These distinctions matter when considering ongoing mining income as a repayment source.

How to Use Mining Rewards as Collateral on ViaBTC

ViaBTC’s Crypto Loans Operation Guide describes the following process:

1. Open the borrowing page from your main account. Log in to ViaBTC, select Loans, and click Borrow.
2. Add eligible collateral. Select supported assets and enter the amount. Collateral can come from a main account or sub-account, with one source account per operation. Choose whether to enable Auto Pledge.
3. Enter the USDT loan amount. Review the information and agreement, then complete the required security verification. Successful loan proceeds are credited to the main account balance.
4. Monitor the position. Track Current LTV, interest, and available funds for repayment or additional collateral.
5. Repay when appropriate. Use USDT, or actively authorize ViaBTC to sell pledged assets for repayment. This voluntary repayment option is separate from forced liquidation.
6. Retrieve available collateral. Full repayment releases the remaining collateral. Partial withdrawals before full repayment are subject to the platform’s LTV requirements.

Miners must also meet applicable eligibility and verification requirements before using the service (User Agreement, §2.1.1).

According to the official FAQ, supported collateral assets include BTC, BCH, LTC, and DOGE, and the minimum loan is 50 USDT per transaction. Interest is calculated daily using simple interest:

Daily interest = Outstanding principal × APR ÷ 365

One day of interest accrues immediately upon borrowing, with subsequent interest charged daily at 00:00 UTC on outstanding principal. Partial days count as a full day. There is no fixed maturity date, but the position remains subject to liquidation.

Understanding the Loan-to-Value Ratio

LTV compares debt with the value assigned to collateral. ViaBTC manages loans and pledged assets as a unified position valued in USDT, rather than treating each loan or collateral coin as a separate risk position. Its user agreement calls this measure the Pledged Asset Ratio (User Agreement, §2.2.0–2.2.2).

Expressed as a percentage:

Current LTV (%) = (Total outstanding principal + Total accrued interest) ÷ Total discounted collateral value × 100%

For each collateral asset:

Discounted collateral value = Collateral amount × Platform index price in USDT × Applicable discount rate

For multiple collateral assets, add their individual discounted values to obtain the denominator.

A fall in collateral prices reduces that denominator and raises LTV. Accruing interest increases debt and also raises LTV. Adding collateral or repaying debt lowers the ratio, assuming other factors remain unchanged. The discount rate is used for monitoring valuation; collateral repayment and forced liquidation settle using actual sale proceeds (Introduction to Collateral-Pledged Loans).

Three thresholds help explain the position:

• Initial LTV is used to determine borrowing capacity and whether collateral can be withdrawn.
• Margin Call LTV is the level at which additional collateral is requested.
• Liquidation LTV is the level at which forced liquidation can be triggered.

Partial collateral withdrawals require the resulting LTV to stay at or below Initial LTV. Check current thresholds, APR, and discount rates in the loan interface, since platform parameters can change (Introduction to Collateral-Pledged Loans; User Agreement).

Auto Pledge and the Mining Account Balance

ViaBTC’s Collateral-Pledged Loans includes optional Auto Pledge. When enabled, and when Current LTV reaches or exceeds Margin Call LTV, it transfers collateral assets from the mining account balance to bring the ratio back to Initial LTV (Introduction to Collateral-Pledged Loans).

Auto Pledge adds collateral; it does not reduce principal. It also cannot eliminate liquidation risk if prices keep falling or the available account balance is insufficient. Coins accumulating from mining may become committed to the loan instead of remaining available for withdrawal or operating expenses. Miners should account for that effect when deciding whether to enable it.

Costs and Risks to Review

A collateralized loan is not a cost-free alternative to selling mined coins:

• Interest accrues while debt remains outstanding. Borrowing adds an expense regardless of whether the collateral appreciates.
• Collateral prices can move quickly. A sharp decline can raise LTV even without additional borrowing.
• Liquidation incurs costs. ViaBTC’s FAQ states that forced liquidation involves selling collateral to repay the loan and charging a 2% liquidation fee. Remaining assets after repayment return to the main account balance (official FAQ).
• Liquidation may leave unpaid debt. If the proceeds do not cover all amounts owed, the borrower remains responsible for the shortfall (User Agreement, §2.2.8).
• Mining cash flow is variable. Difficulty, transaction fees, effective hashrate, and uptime affect coin-denominated earnings. Bitcoin’s price affects their fiat value; it does not by itself determine how much BTC is mined. Higher operating costs can leave less cash available for repayment (Bitcoin Developer Guide).
• Borrowing does not hedge Bitcoin’s price. Pledged BTC remains exposed to price movements while the borrower also owes a debt.
• Platform and custody risks remain. Pledged assets depend on the lending platform’s custody and service availability (User Agreement, §1.5 and §2.1.4).

Questions to Review Before Pledging Mining Rewards

Before borrowing, review the following:

• Are the coins available in the account and eligible to pledge?
• What APR and collateral discount rates currently apply?
• What are the Initial LTV, Margin Call LTV, and Liquidation LTV thresholds?
• How would a meaningful price decline affect the position’s LTV?
• Would repayment remain manageable if mining income declined or operating costs increased?
• What funds would be available to cover a shortfall after liquidation?
• Would Auto Pledge commit coins needed for near-term expenses?

Conclusion

Using mining rewards as collateral can provide USDT liquidity without immediately selling the pledged coins. For miners using ViaBTC’s Collateral-Pledged Loans, the practical task is to balance that access to funds against interest, changing LTV, and repayment obligations. Borrowing is a liquidity-management tool, not a way to increase mining output or remove the risks of holding crypto assets.

FAQ

Can I use expected future mining rewards as collateral on ViaBTC?

ViaBTC’s documented process uses supported assets already available in an account balance. Projected or uncredited mining rewards cannot be selected as collateral through that process.

Which coins can I pledge through ViaBTC’s Collateral-Pledged Loans?

The current documentation lists BTC, BCH, LTC, and DOGE as collateral assets, with borrowing in USDT. Check the platform for any changes before applying.

What happens if my collateral loses value?

Current LTV rises. At Margin Call LTV, enabled Auto Pledge can add collateral from the mining account balance. Reaching Liquidation LTV can trigger a collateral sale and liquidation fees. If proceeds are insufficient, unpaid debt remains the borrower’s responsibility.

Does borrowing against BTC reduce my exposure to its price?

No. BTC used as collateral remains exposed to price movements, while the loan adds a repayment obligation. Borrowing against it is not a hedge.

Is there a fixed repayment deadline?

ViaBTC’s documentation specifies no fixed maturity date. Interest continues to accrue on outstanding principal, and liquidation risk still applies.

References

Product documentation checked on September 29, 2026. Rates, supported assets, and risk parameters may change; consult current platform information before borrowing.

• ViaBTC Help Center, Crypto Loans Operation Guide
• ViaBTC Help Center, Introduction to Collateral-Pledged Loans
• ViaBTC Help Center, ViaBTC Crypto Loans User Agreement
• ViaBTC Help Center, FAQ of Collateral-Pledged Loans
• Bitcoin.org, Bitcoin Halving Countdown
• Bitcoin Developer Guide, Mining