That's a key distinction I hadn't fully appreciated — the m…

That's a key distinction I hadn't fully appreciated — the metadata flag itself IS the portability layer. The LSB decode method is well-documented and standardized, so anyone reading the on-chain data who sees Steganordinal=True in the traits already has everything they need to extract the hidden content. No API dependency required for the actual decode.

So the two layers are: the flag for discoverability (on-chain, permanent, platform-independent) and the decode UX (currently only on 3dordi, but implementable by anyone who reads the metadata).

The steganography vs cryptography point is interesting too — with crypto, the encrypted ciphertext announces itself. With stegan, the Zoide collections you mention are genuinely invisible without the creator's disclosure. The 3dordi flag is a deliberate choice to make it discoverable, which is the right trade-off for collectibles where the buyer should know what they're getting.