With great power comes great responsibility

"Be your own bank" is a good slogan and a bad description. It gets the freedom right and leaves out the job description — because a bank is not just a place that holds money. It is a large organisation performing a dozen unglamorous tasks on your behalf, most of which you have never had to think about.

Take custody of your own bitcoin and those tasks do not disappear. They transfer. This page is an inventory of exactly which ones, so you can decide with your eyes open rather than discovering them one at a time.

A single key on a plain surface, shot from above, with a long hard shadow. Sparse and slightly severe rather than triumphant.

Image to come

What the bank was actually doing

When your money sits with a bank or an exchange, a great deal happens quietly in the background. Most of it only becomes visible when it goes wrong.

Read that right-hand column as a to-do list rather than a warning. Every row is achievable, and most of them are achievable in an afternoon. But they are genuinely your work now, and nobody will send a reminder.

The Canadian version of this is not hypothetical

Deposits at a Canadian bank are protected by CDIC up to defined limits. Crypto assets held on a trading platform are not, whatever the platform's marketing implies. Registration with securities regulators sets rules for how a platform must operate; it is not deposit insurance and does not make you whole if the business fails.

Canada has its own case study. QuadrigaCX was the country's largest bitcoin exchange until it collapsed in 2019, leaving roughly 76,000 users unable to reach their funds. The Ontario Securities Commission's subsequent investigation concluded the platform had been operating as a fraud. Customers had done nothing wrong — they had simply left their coins with someone else, which is what everyone does until they decide not to.

Not your keys, not your coins is not a slogan about ideology. It is a description of who bears the loss when a company fails.

The three things with no substitute

Most of the transferred responsibilities have a workaround. These three do not, and they are worth understanding precisely because every other decision follows from them.

A confirmed transaction cannot be reversed

Not by you, not by the recipient's wallet provider, not by any court or exchange. Once a transaction confirms, the bitcoin belongs to whoever controls the destination key. This is the same property that stops anyone freezing your funds — it cannot be selectively switched off for your mistakes.

The practical consequence: verification happens before you approve, because there is no after. That is why every guide on this site insists on checking the address on the device screen and sending a small test first.

Lost keys are lost permanently

There is no recovery department. If the recovery words are destroyed, forgotten, or were never written down correctly in the first place, the bitcoin remains visible on the blockchain forever and is unspendable by anyone, including you. It is not frozen or held pending appeal. It is simply gone.

This is why a backup you have never tested does not count. Testing the restore is the only thing that converts an assumption into a fact.

Nobody is checking whether it is really you

A bank might phone you about an unusual transfer. Bitcoin has no such layer. A valid signature is authorisation, full stop — whether it came from you, from malware on your laptop, or from someone standing behind you.

The defence is structural rather than watchful: keys kept on a device that malware cannot reach, addresses verified on a screen the computer cannot rewrite, and large amounts held somewhere that takes deliberate effort to spend from.

What the responsibility actually looks like

"Be careful" is useless advice because it does not tell you what to do on a Tuesday. Concretely, taking this on properly means four things — and they are finite, not a permanent state of anxiety.

• A backup that exists in the physical world. Written by hand, stored somewhere that survives fire and flood, and never photographed or typed into a computer.
• A restore you have actually performed. Once, deliberately, before the wallet holds anything you would miss.
• A split between spending and savings. A phone wallet for small amounts you use, a hardware device for the amount you are keeping. Convenience and security have different jobs.
• A plan for the day you are not here. Instructions someone can follow under stress that do not, by themselves, let them steal from you while you are alive.

That is the whole list. It is not nothing, but it is not endless either — and it is dramatically less work than most people imagine before they start.

Why the trade is still worth making

Nothing above is an argument against self-custody. It is an argument for doing it deliberately, because the alternative has its own failure modes and they are not under your control at all.

Leaving bitcoin on a platform means your access depends on that company remaining solvent, remaining honest, not being compromised, not freezing your account by automated mistake, and continuing to operate in your province. You cannot audit any of those, and you find out they have failed at the moment you most need them not to have.

Self-custody swaps that for a set of risks you can actually inspect and reduce. A backup either exists in two places or it does not. A restore either worked or it did not. That is a meaningfully better position — not because the risk vanished, but because it moved somewhere you can reach it.

Start smaller than feels worthwhile

The most common mistake is not technical. It is moving a life-changing amount on the first attempt, because the process seemed simple enough in the video.

Move an amount you would genuinely shrug at losing. Live with it for a few weeks. Restore it from the backup. Send some of it out and back. Only then decide what else should follow. Every serious loss in this space involves someone who skipped that stage because they were nearly sure.