- Why Does Your Bitcoin Wallet Address Keep Changing? - nichemarket
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- Follow To protect your privacy, the BitPay App generates new addresses for your wallet automatically after you use a bitcoin or bitcoin cash address one time.
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When you create a wallet, at least one but usually lots of private keys are generated. Bitcoin Core keeps unused private keys in store at all times by default, and whenever you use a new address, this pool of unused keys get topped up again.
You have a different private key for each address From a private key, you can easily derive the corresponding public key: Together they form an ECDSA key pair on the secpk1 curve.
You cannot easily derive the private key from the public key.
The result is then formatted in Base 58 including a checksum. Therefore, each private-key only corresponds to one address.
However, unlike e-mail addresses, people have many different Bitcoin invoice addresses and for privacy and security reasons a unique invoice should be used for each transaction. Most Bitcoin software and websites will help with this by generating a brand new invoice each time you create an invoice or payment request.
The above is true for any wallet that uses unrelated private keys. There is also another scheme which is called hierarchical deterministic wallet: There, you create one "master key" from which you can recreate all following keys deterministically.
This is safe, because even when providing a signature, your private key is never revealed, binary options project even when you reveal one out of your chain of private keys, your derivation rule is still unknown. Different addresses are for privacy Why should you actually use a different address every time?
- Why are my bitcoin and bitcoin cash addresses changing? – Blockchain Support Center
- Why Does A Bitcoin Wallet Address Change Constantly? | BTC Wires
- Receiving address changed – Ledger Support
- Does the private key of Bitcoin change everytime the address changes? - Bitcoin Stack Exchange
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Actually, it is fine to use an address for multiple transactions. Most wallets do not do it, to increase privacy: If you use the same address over and over again, it is obvious that all these transactions are related to the same person. By how often the bitcoin wallet address changes a new address for every transaction, transactions may still be linked by clever blockchain analysis but it isn't immediately obvious, may be plausibly deniable, or with some effort transactions can even appear completely unrelated.