The answer
Not in the way a hybrid scheme is intended. A blockchain that only verifies ECDSA cannot independently enforce a second post-quantum signature unless an accepted script or protocol mechanism validates it.
What to do next
Look for a published protocol specification and verifier behaviour rather than a marketing claim that signatures are hybrid.
NIST digital-signature standard
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Trezor hardware wallet
A current-generation hardware wallet for managing keys; it does not make Bitcoin or Ethereum quantum-resistant or resolve a future protocol migration.
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Frequently asked questions
Can an off-chain hybrid signature alone protect on-chain coins?
No. On-chain rules determine which conditions must hold before funds can move.