Routing CoinJoin change directly into shared Lightning channels creates a major privacy tradeoff. In WabiSabi clients like Wasabi or Ginger Wallet, change outputs carry deterministic linkability to registered inputs. If you immediately fund a public Lightning channel using unmixed change, that channel's outpoint becomes publicly announced on the gossip network, permanently tying your node ID and subsequent routing activity back to that change UTXO. A safer approach is utilizing zero-coordinator-fee remixing (available in Ginger for outputs under 0.03 BTC) or private submarine swaps over Tor to decouple your on-chain transaction graph before opening channels.
Routing CoinJoin change directly into shared Lightning channels creates a major privacy tradeoff. In WabiSabi clients like Wasabi or Ginger Wallet, change outputs carry deterministic linkability to registered inputs. If you immediately fund a public Lightning channel using unmixed change, that channel's outpoint becomes publicly announced on the gossip network, permanently tying your node ID and subsequent routing activity back to that change UTXO. A safer approach is utilizing zero-coordinator-fee remixing (available in Ginger for outputs under 0.03 BTC) or private submarine swaps over Tor to decouple your on-chain transaction graph before opening channels.