diversifierIndex property
The ZIP-32 diversifier index the address derives at — the durable
HOST-SIDE attribution key (same seed + same index ⇒ the same address,
forever). WALLET-INTERNAL data: it is a sequential mint ordinal, so
sharing it with a counterparty (or embedding it in an outward-facing
invoice identifier) leaks mint count and lets counterparties link their
addresses to one wallet. A plain int is exact on EVERY platform: the
SDK's frozen public-receive region tops out below 2^41, far under the
web's 2^53 safe-integer bound. §5.4 NEVER-LOG.
Implementation
final int diversifierIndex;