Bitcoin Core importwallet RPC: Wallet-Dump Recovery Guide

This guide explains Bitcoin Core importwallet RPC in plain English. It shows what the command does, what its result means and what it cannot prove.

Dump-file custody

A wallet dump contains private spending material and metadata. Generate, transfer and import it only on controlled encrypted systems, with restrictive permissions and no cloud sync, shell-history exposure or support attachment. Securely retire temporary copies under a documented policy.

File and source validation

Resolve the exact server-side filename and verify provenance, integrity and expected format without printing contents. A path accepted by the daemon is not proof that it belongs to the intended source wallet or Bitcoin network.

Target-wallet boundary

Confirm loaded wallet name, version, encryption state and network before import. Freeze address generation and spending during the migration. Importing into the wrong wallet can mingle custody and make later separation error-prone.

Historical discovery

Expect substantial processing while the wallet discovers past transactions. Apparent keys may precede complete balances. Monitor completion against a synchronised tip and compare known historical outpoints rather than declaring success from command return alone.

Duplicate and partial state

Some keys may already exist and failures can leave a partially changed target. Inventory expected public identifiers before import, reconcile afterwards and retry only through a tested idempotent procedure. Never replace the wallet database with the dump file.

New backup requirement

Create a new encrypted wallet backup after import and reconciliation, then restore-test it in isolation. Preserve the pre-import backup and migration evidence. An old backup cannot be assumed to contain newly imported keys.

Recovery rehearsal

Practise on regtest with disposable source and target wallets, repeated imports, wrong-network data, interruption, restart and restored backups. Verify receiving, change and spending for imported keys without ever using a production dump in tests. Build a revision-pinned evidence pack on an isolated node, wallet or protocol harness.

Conclusion

importwallet is a bulk private-key migration whose success requires more than parsing a dump. Secure custody, complete history, reconciliation and a newly tested backup define the actual recovery boundary.