The key factor to Bitcoin, and any crypto currency, is the blockchain. This is a distributed open ledger that the world can see. Transactions are anonymous in the sense that names are not attached to them. But “wallet IDs” are certainly attached, and THOSE are listed on the public ledger. This means if someone knows your wallet ID, they can see EVERY transaction…going back to the first transaction.
If anyone is promoting any crypto currency as anonymous, run from them.
I went through a 4 year audit with the IRS. Trust me…they looked at every single thing I did from 2013 through 2022. And for a few of those years, I did a lot. They asked where everything went, and to whom.
I know people who accepted bitcoin for their businesses. Most of them rolled them over pretty fast. But some of them held onto them. Those people are very wealthy today. I remember paying a guy .75 bitcoin for a product. Trust me, it wasn’t worth $75k. LOL
Yeah, I spent 0.32 BTC ($31K) on 6 ozs. of loose leaf tea back about 10 years ago...the tea shop was the 1st place to spend BTC in my area....I thought it was “cool” to buy some tea that way! ;-)
BTC can be essentially anonymous if you are careful/smart about it...fresh BTC wallet (BTC “Core” wallet) downloaded via TOR if super paranoid...fund the new wallet with BTC that has been “coin-joined”/”bit-mixed”/”whirlpooled” i.e. (the new “Ashigaru” project), then NEVER use a unique wallet address more than once. Also definitely no use of exchanges like “Coinbase” that require “KYC”. Not sure what you mean by “a wallet ID”, your private key is private by design...the only thing exposed to the blockchain are “UTXO’s”/public keys and if you haven’t associated those to any of your personal info. by the above “bad habits” then your “ID” is just a long string of random #’s not associated to any person or place. And if you only use a particular wallet address once (you can generate as many of those as you want from your BTC wallet)...Blockchain analysis will be stymied at the one transaction level.