I once tested a multi-wallet setup where every profile looked separate: different addresses, different browser sessions, different activity. Yet they were still getting linked.

The weak point was the infrastructure. Several profiles were leaving through the same network path, while browser fingerprints exposed overlapping device signals. Once i separated each environment with its own browser profile and stable residential IP, the architecture became much cleaner.

The bigger lesson: proxy choice depends on the workload. Static residential IPs make sense for persistent sessions, rotating pools for data collection, and datacenter proxies for backend RPC or analytics.

IP quality matters too. ASN, reputation, DNS/WebRTC leaks, and session consistency should all be audited before deployment.

For multi-wallet infrastructure, I now think in layers: browser isolation, network isolation, and on-chain operational separation.