z_getmigrationstatus - Zcash 4.0.0 RPC

Returns information about the status of the Sprout to Sapling migration.
Note: A transaction is defined as finalized if it has at least ten confirmations.
Also, it is possible that manually created transactions involving this wallet
will be included in the result.

  "enabled": true|false,                    (boolean) Whether or not migration is enabled
  "destination_address": "zaddr",           (string) The Sapling address that will receive Sprout funds
  "unmigrated_amount": nnn.n,               (numeric) The total amount of unmigrated ZEC 
  "unfinalized_migrated_amount": nnn.n,     (numeric) The total amount of unfinalized ZEC 
  "finalized_migrated_amount": nnn.n,       (numeric) The total amount of finalized ZEC 
  "finalized_migration_transactions": nnn,  (numeric) The number of migration transactions involving this wallet
  "time_started": ttt,                      (numeric, optional) The block time of the first migration transaction as a Unix timestamp
  "migration_txids": [txids]                (json array of strings) An array of all migration txids involving this wallet

Made by @karel_3d; license of the docs is MIT (see zcash repo), license of the scripts and webpage is also MIT ((C) 2018 Karel Bilek) (github repo)

Note it uses a mainnet node