Private key

A private key gives full control over a wallet. Whoever holds the key can move the coins, regardless of who the owner is. In cases of fraud or theft the central question is often who had or gained access to the key. The loss or handover of a private key is therefore a crucial moment in many cases.

What is a private key?

A private key is a secret code used to sign transactions from your wallet. It is comparable to the key to a safe: without it no one can get in, but anyone who copies it has as much power as you do. A private key should always remain secret and must never be shared with anyone.

What is the difference between a private key and a seed phrase?

A seed phrase is a series of words from which your private keys can be derived and restored. The private key itself signs the individual transactions. Both must stay secret, because either one lets someone move your coins.

What is the difference between a private key and a public address?

You can share the public address freely in order to receive. The private key gives the authority to send and belongs to you alone. The key cannot be derived from an address.

Can a private key be blocked?

No. There is no party that can withdraw a key or make it invalid. The only option is to move the balance to a wallet with a new key, provided you still have access.

Who legitimately asks for a private key?

Nobody. Platforms, banks, the police and investigation firms do not need the key. Treat every request for it as an attempt at fraud.

What can you record if a key has been misused?

The moment of the first unexpected transaction, the addresses and hashes involved, and the events before it such as a message, a download or a connection with an unknown application.

What control means in a file

In an investigation the decisive question is not who owns a balance on paper but who could sign for it. That is why the key material is treated as the boundary of everything else: whoever has it can move funds at any moment, and whoever has lost it cannot move them at all, regardless of what any document says. Once you understand that, a great deal of what happens after a theft becomes predictable, including the long quiet periods followed by sudden transfers.

Demonstrating control does not require handing anything over, and no reputable party will ask you to. A signed message from the address, a matching device, or a consistent history of use over time are all accepted ways to show that an address belongs to you. We never request key material or a recovery phrase, and we say so in writing before an investigation starts, because a request like that is itself one of the most common opening moves in a scam. What we do record is the address, the period and the evidence for the link.

External sourceThe FCA warns consumers that crypto is largely unregulated and that people who lose access or lose money are unlikely to be protected by the schemes that cover regulated products. That warning is directly relevant here: with self-custody there is no institution that can restore access, which is a risk you accept rather than one you can insure away. See FCA: crypto basics.

Your own situation

If you are reading this, you probably have a question about your own situation. That is exactly what Paucitas does.

The first step is contact by phone. We prefer to schedule that call through WhatsApp, so you do not have to wait. In the call we look together at what can factually be established in your case and what Paucitas can examine for you.

Go to the contact form