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Blockchain Privacy (1. Summary (Thinking about the what you are hiding…
Blockchain Privacy
1. Summary
Thinking about the what you are hiding from, what is your threat model and what is your adversary.
Transaction surveillance companies exists, whic do large-scale surveillance of the bitcoin ecosystem.
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Use a wallet backed by your own full node or client-side block filtering, definitely not a web wallet
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If lightning is unavailable, use a wallet which correctly implements CoinJoin
CoinJoin concepts
Combining multiple Bitcoin payments from multiple spenders into a single transaction to make it more difficult for outside parties to determine which spender paid which recipient or recipients.
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2. Introduction
In the Bitcoin transaction, the sender and receiver addresses are all know, only the the real identities are unknown. But if any of the past or future transaction ties to some real identity, then it is possible to find the identity of all the historical transactions from that point with the transaction graph.
That’s why it is highly recommended to use new address for each transaction. (Ephemeral key is better)
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Privacy requires a change in behavior, however slight.
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