Self Custody Or Exchange

In the FTX bankruptcy they had to file claims like any other creditor, and those claims were valued in dollars at the date the case opened rather than in the coins they thought they held. That is the position of an unsecured creditor: a legal claim on the company's assets, not possession of an asset.

Self-custody changes this equation. The reason is on the balance sheet: what the exchange holds for you is its liability to you. But someone else's liability can be your asset, if it's in your control. If the asset belongs to you and you alone, as your own private key will. Which is a relief, unless you forgot to take an inheritance precaution or can't find your backup phrase.

An Exchange Balance Awaits Creditor Status

The legal independence of the custodian from you, the customer, is brought into harsh relief every time an exchange fails. At FTX, this promoted its debts to users into "general unsecured claims". A 2022 petition showed the claimants included the 50 largest creditors in the form of unsecured parties.

But the point was more than how much unsecured debt FTX had to the market overall. An SEC filing showed that customers are classified in the same way as other unsecured creditors, as a "a junior form of secured debt". And where the creditor status doesn't apply, the bankruptcy material claimed assets lost value compensable at their Petition Date.

All these factors together underscore what it means for an exchange to pull you, as a user, into its own asset-liability tracks. Because in bankruptcy, you're not allowed on the asset side either.

The “Not Your Keys, Not Your Coins” Insight: Really Yours Means No Exchange Problems

There are a lot of ways to define what it means to self-custody, but at a high level, there are always two parts. Unretained control of both your private keys and your protocol obligations, combined. An exchange balance puts a third-party trustee to handle the keys, and manages the obligations without shifting them. That is a little like when a credit outfit puts a valuation on your asset without discharging the original claim: it's multiple obligations on the same property, but splitting it into two different ownership interests.

When you self-custody, your keys are a special kind of obligation, and it can be hard to figure out what they mean. An authority like Spark, in its glossary, defines self-custody as "holding your own private keys". That key is the same as your protocol obligations, but without the credit transaction that shifts your rights to use it.Once you take back the private key, the biggest transaction you've done is all you're going to do in the future.

An exchange, even if it adjusts its balances, means that the keys are in the hands of people you only cross with in a market context. Owning them is a claim on the institution, so to speak. It may not be with intent to defraud, but it's due to an accident you can't fully control. That's why, for a lot of the more seasoned people on the inside, self-custody means you have to handle more than the return on the keys.

The Responsibilities That Come with Self-Custody

That's especially clear on the obligations side of the equation. The same Spark glossary page notes that, even as self-custody eliminates counterparty risk from the owner's balance.

It "requires the user to protect the seed phrase, manage backups, and plan for inheritance"

An obligation means you're setting yourself up to shoulder the risk of making an incorrect valuation. And validating that self-sufficiency yourself, even if you plan on barred dependencies, is its own kind of credit transaction. If you put something up as collateral, but didn't put up your keys, your assertion of a claim while its value is potentially higher. In bankruptcy, that means the people who own that compensation get it instead.

What Proof of Reserves Can and Can't Do

Exchange failures have also led to a greater awareness of the importance of proof of reserves. But what exactly does it prove? The Kraken blog outlines the components of a true proof of reserves.

But the inclusion of proof of liabilities alongside proof of assets is crucial, as emphasized by CER.live's proof-of-reserve requirements. This means that a true proof of reserves should not only demonstrate the existence of sufficient assets but also verify the corresponding liabilities, ensuring that users' balances are accurately reflected.

Without proof of liabilities, an audit that shows an abundance of assets might still mask significant risk—the risk that those assets don't align one-to-one with user claims. If liabilities don't match up with the assets, or if liabilities can be falsified, the "proof" could be substantially flawed.

Balancing Self-Custody and Exchange Use

In the wake of major exchange failures like FTX, many users are grappling with this tradeoff: Should they keep their assets in self-custody, with all the responsibilities that entails, or rely on exchanges, with all the risks? The world of crypto has often seen the best way forward as a hybrid approach. Indeed, using exchanges with sharp awareness of how they cross you out of your monopoly over your assets, or implementing safety measures like multisig setups, timed transactions, or secondary backups for your keys, are all practical ways to hedge as Spark has it.

There may be no time like Reviewing FTX's claims substantiation, and what underwriter stands behind them, as a testing ground for your own last-mile self-custody steps: like charting out what inheritance mechanisms serve you, and applying practical recovery precautions, like needing to show recovery on the backup phrases.

The lesson of the FTX collapse, more than any other, was how much an institutional asset sits inside its own financial obligations. Proof of its reserves, or custody of a well-fortified asset, are admittedly much on the minimal end of liability protection, but they're only a complete safeguard if you can walk them up the chain. From its signing, a secured reserve is like a personal obligation, at least in value and scale. Then, from its conclusion, that's a self-custody obligation in a way.

Self-custody necessarily shifts that accountability back, but in doing so, makes it harder to correctly protect the steps in the mean time. Once FTX said it was going to back that Bitcoin up, the real recoverability meant making sure your own session reflected one-to-one ownership. Only a full self-custody setup, able to verify each transaction and meet each creditor obligation, can truly handle those protocol steps.