Question

How does the following affect Bitcoin privacy

I Reusing Bitcoin addresses

ii. Merging co-owned funds

iii. Linking network identity to Bitcoin address

iv. Linking Bitcoin Addresses Together Through Network Activity

Answer 1

1. Reusing Bitcoin address - can affect Bitcoin privacy as the bitcoin works on private and public kry mechanism, which though at initial phase is only private with the owner of that account, and the public key is shared when user wants to send bitcoin to another user, One should never reuse a bitcoin address as it can expose both the initial user holding funds and everyone who gets that bitcoin in future, And anyone who is actively monitoring the bitcoin blockchain to link identities of transictions will get to know about it.
2. Merging co-owned funds - this is a serious issue , one should not merge co-owned funds. if somehow you expose your private key, which is easy for the hacker , this risk somehow exsists only when not using a service like coinbase . but there are some easy ways that ur bitcoins will be hacked by getting in your account, if merged all will be lost at once
3. Linking network identity to Bitcoin address- this is also not a good idea, because the bitcoin payments are processed between two peers of network, the peers here are unique virtual address, now linking network identity will affect privacy as the network gets hacked very easily and if one linking is there it is not unique at all, everytime it is checked by the miner.
4. Linking Bitcoin Addresses Together Through Network Activity - bitcoin software learns the past and present blockchain activities through network queries , when querying for less information than the entire blockchain , the software will leak the address