The holder's classic XRPL address.
OptionalledgerAdvanced: the ledger index to read confidential state (balance, version, issuer/auditor keys) from, so a single proof is built from one coherent ledger snapshot. Defaults to the latest validated ledger. prepareConfidentialBatch sets it so every inner shares one ledger; standalone callers normally omit it.
The 24-byte hex MPTokenIssuanceID.
OptionalsequenceOptional explicit sequence number. When omitted the builder queries the
account's current sequence. The returned transaction pins Sequence, so it
must be submitted without re-deriving the sequence (the proof is bound to it).
Inputs for prepareConfidentialMergeInbox.