Zcash shielded (Sapling) from a BIP39 mnemonic

Status: address + viewing key only. Verified against ZIP-32 Sapling vectors (hard derivation, key components). Not cross-checked against a wallet app's mnemonic -> zs1 output; check that the first address matches what your wallet showed before you rely on it.

./blocktools run 'zec-sapling --count 5 < /in/ada-mnemonic.txt'

Unified address (what Zashi/Ywallet show: orchard + sapling + transparent receivers) plus the t1 address:

./blocktools run 'zec-sapling --count 1 --unified < /in/mnemonic.txt'

Verified against all 60 zcash-test-vectors unified_address vectors. Not cross-checked against a wallet app; compare the u1 string with your wallet's receive screen.

With an output directory for the view-only key:

./blocktools run zec-sapling --count 1 --viewkey-out /out/zec.view < /in/mnemonic.txt

The viewing-key file (zxviews…, mode 0600, never overwritten) can be imported into a wallet such as Zingo or Ywallet as view-only to scan for notes. It reveals all incoming and outgoing history, so treat it as sensitive. The spending key is never written. To move funds, restore the mnemonic in a Zcash wallet (Orchard viewing keys, scanning and spending are not built here).