If i own the hash of a transaction signed by my bitcoin Private Key does that mean i own those transactions?What I don't understand is ..say if someone has thousands or millions of these txid,how is it not safe?
Bitcoin transaction id is the hash of a transaction signed by a bitcoin private key. It is not a way to generate a key. If you want a secure Nostr key pair, use Rana on an offline pc. That’s how I generated my Nostr key pair. You don’t need to provide your private key to any relay or nip-05 service. Just provide your public key, or if they need a hexadecimal key, use https://damus.io/key to convert npub to hex.
Discussion
You own the bitcoins that are in the elliptical addresses generated by your wallet private key. TXID’s are just a useful way to look up past transactions. UTXO is what I think you are taking about. https://learn.bybit.com/glossary/definition-utxo/
UTXO are the unspent transactions,right?And they are also in sha256 hash?