Provable physical possession of a public/private keypair, even when the private key is not granted to authorities, is sufficient for a judge to keep a person in jail for failing to cooperate with seizure of #Bitcoin, lawful or not.

Your setup *must* make it difficult or impossible to prove that you possess a public/private keypair to any #Bitcoin.

It's not enough to just make private keys hard to access. The entire setup needs to provide plausible deniability.