Bitcoin Lending FAQ

Bitcoin rewards cards settle purchases in U.S. dollars on the Visa/Mastercard rails just like a normal cash-back card. The difference is what happens to the rebate: instead of statement credits or points, the card automatically uses that rebate to buy bitcoin (or another crypto) at the market rate and drops it into an account the issuer controls for you. Your APRs, payment due dates and dispute rights stay the same; only the reward currency changes.

Bitcoin-backed cards extend you a line of credit to spend against your bitcoin held as collateral. The CL card by Ledger is a good example of this.

Some issuers hold rewards with regulated custodians or in cold-storage wallets; others rely on exchange partners. Ask about custody partner, insurance, and proof-of-reserves.

Look at reward rate, fees, withdrawal options, custody terms, sign-up bonus, and any regional restrictions. Be sure to do your due diligence on the custodian where your Bitcoin will be stored by checking out our Custodians page linked at the top of the page.

Many issuers let you withdraw to any BTC address; others keep it on their platform. Look for a card that supports free, on-chain withdrawals if you prefer self-custody.

Anywhere the underlying network (Visa, Mastercard, etc.) is accepted. Spending BTC directly at checkout usually isn’t required; purchases settle in dollars.

Custody in a Bitcoin Context: Custody refers to the secure storage and management of Bitcoin (or its private keys) on behalf of an owner, ensuring safety and control over access.

Private Key Control: A custodian holds the private keys to Bitcoin wallets, enabling them to manage, transfer, or safeguard the assets. In contrast, non-custodial solutions allow users to retain control.

Security and Protection: Custodians implement robust security measures, including cold storage, multi-signature wallets, and insurance, to safeguard Bitcoin against hacks, theft, or loss.

Regulatory Compliance: Custodial services often comply with regulations (e.g., FinCEN MSB, SEC rules) to ensure adherence to AML/KYC requirements and proper asset segregation for user protection.

Institutional Use: Custodians play a crucial role for institutional investors, facilitating the integration of Bitcoin into portfolios by providing trusted, regulated storage solutions.

If you don’t control the private keys, you don’t ultimately control the bitcoin. Self-custody keeps you in charge; custodial solutions require trust in the provider.

The phrase "Not your keys, not your coins" gained prominence throughout Bitcoin's history as seemingly secure and regulated exchanges/custodians/wallets such at Mt. Gox, Celsius, and FTX all failed in their fiduciary duty to protect customer funds.

You hold your own keys in a hardware wallet, mobile wallet, or other tool—only you can move the coins.

Your keys are split among two or more parties (e.g., you + a service). Moving coins needs multiple signatures, giving redundancy without full control to any single party.

Several regulated institutions each hold key shards, adding geographic and legal separation plus SOC/SOX-level audit trails—often required for funds and ETFs.

Check for a U.S. OCC national trust bank charter, state trust charter (e.g., Wyoming SPDI), or comparable licenses abroad (EU MiCA crypto-asset service provider authorisation).

OCC Interpretive Letters (U.S.), BitLicense (NY), MiCA (EU) approvals, SOC 1 or SOC 2 audit reports, and proof-of-reserves certificates all signal higher standards.

Expect an annual or assets-under-custody (AUC) fee plus network fees for withdrawals; some charge onboarding or emergency-access fees. Compare total cost with self-custody hardware and insurance you’d need on your own.

Bitcoin ETFs, or Exchange-Traded Funds, are investment instruments that mirror Bitcoin's price, enabling investors to participate without directly holding the cryptocurrency. These funds are listed on conventional stock exchanges, allowing access via regular brokerage accounts.

Bitcoin ETFs are important because they provide a regulated and familiar method for investors, particularly institutional ones, to invest in Bitcoin. This can enhance market credibility and draw in more capital, which may help stabilize the market.

It's thought that Bitcoin ETFs might boost Bitcoin's price by expanding demand, since more investors can access it easily. Nonetheless, the exact effect remains uncertain and is debated, with some arguing it could also cause increased price volatility.

Bitcoin ETFs usually rely on regulated custodians and secure digital vaults for storing Bitcoin, which helps mitigate safety concerns. Although considered generally secure, the possibility of cyber theft remains a point of ongoing discussion.

Investors typically evaluate aspects such as management fees, the issuer's reputation, and the ETF's tracking accuracy of Bitcoin's price. Since there is no universal solution, the best choice varies based on each investor's specific goals.

Fiat balances held at a partner bank may carry FDIC/CDIC pass‑through insurance up to statutory limits, but crypto assets themselves are not FDIC‑insured. Look for crime or specie insurance that covers theft of cold‑stored Bitcoin.

Most regulated exchanges require at least a government ID, selfie, and proof of address. Higher trading tiers or institutional accounts may need source‑of‑funds documentation. Completing KYC unlocks higher withdrawal limits.

High‑liquidity venues (large order books, high 24‑hour volume) let you buy without moving the market, cut slippage on large orders, and make cashing out quicker during high‑volatility periods.

Choose platforms with strong security (cold‑storage reserves, SOC‑certified audits), clear regulation or licensing in your region, deep liquidity so orders fill at fair prices, and responsive customer support. A transparent proof‑of‑reserves report is a bonus.

The safest path is to withdraw to self‑custody (your own hardware wallet). For larger or institutional balances, consider multi‑institution custody, where several regulated entities each hold a key shard—no single party can move funds alone, lowering counter‑party risk.

Check withdrawal policies: some exchanges batch withdrawals once per day, others release funds instantly but set daily limits. Also confirm whether they cover miner fees or pass them through to you.

The spread is the difference between the highest bid and lowest ask. Tight spreads mean you buy closer to the true market price; wide spreads quietly add cost even if headline fees look low. Compare the spread in dollar terms, especially on smaller regional exchanges.

• Bank wires/ACH/SEPA – low fees, settle in 1‑3 days.
• Debit/credit card – instant but 2‑4 % processing fees and cash‑advance interest possible.
• Stablecoin transfer – nearly instant with network fees only, but requires prior crypto know‑how.

Look beyond maker/taker fees to:

Deposit fees (bank wire, card, ACH)

Withdrawal fees: both fiat and on‑chain BTC network fees

Inactivity or small‑balance charges on some platforms
Total cost = trading fee + spread impact + any funding/withdrawal fees.

A maker order adds liquidity by resting on the order book; a taker order removes liquidity by filling immediately. Exchanges reward makers with lower fees (or rebates) because they improve market depth, while taker fees are typically higher. Always check both rates: active traders can save a lot by placing maker‑limit orders.

Bitcoin is a decentralized digital currency secured by a global, peer‑to‑peer network. Instead of relying on a bank or government, it uses an open ledger (the blockchain) to verify every transaction and enforces a hard‑capped supply of 21 million coins. Anyone can send or receive bitcoin 24/7, anywhere in the world, without intermediaries.
→ Want the full story? See our Bitcoin 101 guide in the Learning Center for a deeper dive into mining, wallets, and security fundamentals.

Bitcoin’s open, predictable monetary policy and decade‑long security record make it fundamentally different from other cryptocurrency. We believe institutional investment in the sector will continue to be concentrated in Bitcoin ETFs and Bitcoin Treasury Companies rather than the long tail of altcoins. By concentrating on a single protocol, we can dig deeper into technical details, regulatory nuances, and security standards—giving you clearer, apples‑to‑apples comparisons.

Each provider is reviewed independently in‑house. We pull the latest terms, licenses, fees, and security disclosures directly from the source (regulatory filings, official docs, or API feeds) and score them against a transparent checklist. Users are invited to leave honest, unbiased reviews to deepen the perspective. Please email info@21rates.com if you spot anything missing or out of date.

We are a small, independent team that has worked in Bitcoin since 2013: running mining farms, designing custody solutions, and building infrastructure for institutions. As long‑term holders who have witnessed bankruptcies caused by human error, weak security, and poor transparency, we created 21Rates so Bitcoiners can stop trusting and start verifying for themselves.

Reach out to info@21rates.com if you're interested in getting involved!

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Bitcoin-backed lending allows you to use your Bitcoin as collateral to secure a loan in traditional currency. You retain ownership of your Bitcoin while accessing liquidity.

Most lenders require a loan-to-value ratio of 50-80%, providing a buffer for price fluctuations. If the value drops significantly, you may need to add more collateral or partially repay the loan.

Approval times vary by lender but typically range from a few hours to 24 hours. Some platforms offer instant approval for smaller loan amounts.

Yes, lenders typically charge origination fees, maintenance fees, and potentially early repayment fees. These vary by lender and should be factored into your decision.