Crypto Lending, Rehypothecation and Counterparty Risk

Deposit coins with a crypto lending platform advertising 8% yield and it's tempting to think of it as a savings account: your coins sit there, earning interest, available on demand. What actually happens is closer to a bank loan: the platform takes your deposit and lends it to someone else — a trading firm, a market maker, another platform — who pays interest on it. The yield you earn is really a slice of what that borrower pays. This is rehypothecation, and it means your deposit's safety depends on a chain of counterparties you likely never see.

Where the yield actually comes from

A lending platform offering an attractive rate on deposited crypto isn't generating that yield from nowhere — it is the spread between what it charges borrowers and what it pays depositors. To offer depositors 8%, it might lend the same coins to institutional borrowers at 11%, keeping 3% as its own margin. That's a normal, sustainable lending business, structurally identical to a bank. The risk enters when the borrower on the other end can't repay, or when the platform itself further pledges the same coins as collateral for its own borrowing, layering exposure on exposure.

Worked example

A user deposits $100,000 in stablecoins on a lending platform advertising 9% APY. The platform lends that $100,000 to a market-making firm at 12%, keeping the 3% spread. So far this is a simple, functioning credit business. But the market-making firm, in turn, posts that same $100,000 as margin on a derivatives exchange to run a leveraged trading strategy — a second layer of rehypothecation the depositor never sees or consents to. If that strategy loses money and the firm can't cover the margin call, the exchange seizes the posted collateral, the firm can't repay the lending platform, and the platform — which does not have the $100,000 sitting in reserve because it lent it out — cannot return the depositor's funds. The depositor's "savings account" balance is now a claim in a bankruptcy proceeding, not a withdrawable deposit.

What this means in practice

The 2022 crypto credit crisis played out almost exactly this way across several major lenders: one large borrower's losses cascaded through a chain of rehypothecated collateral, freezing withdrawals at multiple platforms that had each, individually, looked solvent. The lesson generalizes: any yield offered on a deposited crypto asset that exceeds what the asset can earn natively (staking rewards, for instance) is coming from somewhere, and that somewhere is a borrower whose creditworthiness — and whatever they in turn pledged the collateral to — the depositor rarely has visibility into.