The answer
Child seeds can be used separately, limiting routine exposure between child wallets. But a compromised BIP85 parent can recreate every derived child, so the parent remains a single critical dependency.
What to do next
Store the parent offline with stronger protection than an everyday child-wallet seed.
Trezor hardware wallets
Hardware wallet or backup product relevant to a self-custody question. Availability, supported assets and local eligibility must be checked before signing up or buying.
Visit Trezor hardware wallets ↗Official provider link · Compare suitability and availability before choosing.