Post
Topic
Board Bitcoin Technical Support
Merits 1 from 1 user
Re: Importing an old v0.3.0 wallet.dat - is my plan sound?
by
nc50lc
on 22/05/2023, 11:13:11 UTC
⭐ Merited by ETFbitcoin (1)
Blockchair gave warnings on privacy re:
 - matched addresses identified
 - round value
 - output value x1000 (I guess Bitcoin Core had to use a large UTXO)
 - discrepancy: no output of the same type as inputs
Those are just common heuristics on identifying the recipient from change.
Here's their official documentation about their "privacy-o-meter": https://github.com/Blockchair/Blockchair.Support/blob/master/API_DOCUMENTATION_EN.md#link_700

Since you're going to send all to your Ledger Nano anyways, it'll be inevitable that heuristics will see that the receiver and sender is the same user.
But it shouldn't cause a link to your identity.
It's Ledger Live's server and Exchanges where you'll end up using that you should worry about your privacy.