Crypto-derivation allows shared space, not shared files.

It’s mathematical teleportation.

Unary vs Binary Secrets

Unary secret (private channel)

me.wallet.secret("alpha")

• Produces a 1‑arity universe: U(alpha) → only ME can derive it.
• The keyspace derives only from secret + path + local identity, so only you can decrypt the blob.

Binary secret (shared universe)

me.wallet.secret("alpha@pamela")

• Fundamentally: U(alpha@pamela) = intersection(ME_identity, Pamela_identity).
• Creates a 2‑identity shared space.

It creates what cryptographers call a Multi‑party Semantic Channel.