Bitcoin Forum

Please help. How do I  get registration details from my Electrum crypto wallet? To prove that the wallet is mine

You need to sign message using the wallet address that you want to prove ownership.

You can refer to this thread: https://bitcointalk.org/index.php?topic=990345.0 for guide.

Not sure why you mentioned "registration details" and not a signed message, just in case you think Electrum is like some sort of Coinbase/Blockchain.com, they're not. A non-custodial wallet is not like a company that maintains a database of registered users.

this ^^ is correct, i'm just trying to rephrase what joniboini said in a newbie-friendly way. It's slightly simplified, but i hope i'll do a good job at an ILI5 explanation:

Bitcoin is completely decentral. All you need to spend bitcoin is a private key. A public key gets derived from this private key, the public key gets hashed, and the result of this hash is your address.... This address can get funded by unspent outputs (you get payed). So, if you have a private key, that's enough.

Now, one step further: nobody needs to know you have this private key... You can create millions of private keys (and derive addresses from them) on your offline pc... All of them will be valid (well, if you didn't mess up the creation process)... If you'd copy an address from this offline machine and give it to somebody else to get payed, the only thing that will be known to anybody else (but you) is said address.
You don't need to register anything, you don't need to share anything (except for the address in case you want to be payed).

Offcourse, there are online company's that manage those private keys for you... These online company's can have rules (for example, registration or KYC). I'd strongly advise against using said company's, because they controll all your funds (they're the one knowing your private keys, so they take all controll away from you).
Instead, i'd advise you to use a decent desktop, hardware, paper or offline wallet... These wallets do a pretty good job at managing your keys, taking away most of the technical details so you don't have to worry about them... But even then, once again: nobody needs to know you own any bitcoins, there is no central authority, no need to register...

Can you share why you need this? For tax reasons for instance?

This seems somewhat odd to me.

I'd assume that you either 1) didn't understand the concept of bitcoin and wallets or 2) someone is trying to scam you.

Further, this completely seems to be a XY problem (https://en.wikipedia.org/wiki/XY_problem).
You'd be better off explaining what exactly you want to achieve. Do not ask about something which you believe helps you to achieve it. Start off from the very beginning.

Decentralized wallets don't need KYC so you can't prove that the wallet was created under your name but you can prove the wallet ownership like other said by signing in a message from the address or simply send dust amount to the one who wants to know that this address under your possession.