user78929: There is a Ring Signature implementation in C++ by Libbitcoin team. We can find the details in the following GitHub repository. Is it feasible to use Monero like Ring Signatures together with the CoinJoin Technique in Bitcoin without a soft fork on the core protocol.

user38618: Using ring signatures off-chain to form a coinjoin transaction sounds hard, especially since because BTC doesn't have ring signature support without a hard fork or a soft fork.
You may find Cashfusion, an instance of CoinJoin shuffling, interesting, it's fully applicable to BTC and it uses TOR, which is simpler than Ring Signatures.

78929: <p>There is a Ring Signature implementation in C++ by Libbitcoin team. We can find the details in the following <a href="https://github.com/libbitcoin/libbitcoin-system/blob/bef130bdc8c57808dceab99d6867f3c58acf4e92/include/bitcoin/system/math/ring_signature.hpp" rel="nofollow noreferrer">GitHub</a> repository. Is it feasible to use Monero like Ring Signatures together with the CoinJoin Technique in Bitcoin without a soft fork on the core protocol.</p>
 38618: <p>Using ring signatures off-chain to form a coinjoin transaction sounds hard, especially since because BTC doesn't have ring signature support without a hard fork or a soft fork.</p>
<p>You may find <a href="https://github.com/cashshuffle/spec/blob/master/CASHFUSION.md" rel="nofollow noreferrer">Cashfusion</a>, an instance of CoinJoin shuffling, interesting, it's fully applicable to BTC and it uses TOR, which is simpler than Ring Signatures.</p>
