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Multi-Signature Wallet Recovery - Crypto Wallet Recovery New Zealand

Multisig recovery

Multi-Signature Wallet Recovery

Multisig configuration reconstruction and threshold wallet recovery

A multisig address is not derived from any single key. It is computed from the full set of participating extended public keys, their exact ordering, the required signing threshold, the derivation paths, and the script type. All of that together is captured in what is called the output descriptor. Losing a co-signer does not necessarily lock the wallet, but losing the descriptor often does, because the keys you hold cannot reveal the public keys of the ones you do not. Recovery works from the key material and configuration that survive, testing plausible parameters against a known address until the derivation reproduces it exactly.

10%recovery fee
Only charged on successful recovery
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Meet the team

Meet our recovery experts

A team built on years of experience across New Zealand's most complex crypto matters.

Nic Turnbull, Co-Founder at Crypto Wallet Recovery NZ

Nic Turnbull

Co-Founder

Technical recovery across every wallet type and failure mode

Remote

Can fly anywhere in New Zealand

Harry Satoshi, Co-Founder at Crypto Wallet Recovery NZ

Harry Satoshi

Co-Founder

Firm development, operations, and client oversight across every recovery

Remote

Can fly anywhere in New Zealand

Our methods

How we recover a multisig wallet

Every recovery is methodical and fully offline. Your key material never leaves our air-gapped equipment, and the work happens in an environment of your choosing.

Descriptor and configuration reconstruction

Rebuilding the parameters that turn a set of keys back into your wallet.

  • The address derives from the full public key set, key ordering, threshold, derivation paths, and script type together
  • The output descriptor, in BIP-380 form such as sh(wsh(multi(2,...))), captures all of it in one string
  • Where the descriptor is lost, plausible threshold and script combinations are tested systematically
  • Standard multisig derivation paths, such as m/48'/0'/0'/2', checked before non-standard ones
  • Each reconstructed configuration verified against a known address until the derivation matches exactly
  • The confirmed descriptor documented and provided to you at handover

Key and signer assessment

Determining what you hold, what you are missing, and whether the threshold can be met.

  • Every available private key, seed phrase, extended public key, and device inventoried
  • The M-of-N threshold compared against the signers actually accessible
  • A clear distinction drawn between a lost key and one that is inaccessible but recoverable
  • Individual signer keys recovered through our standard seed, password, or device methods where needed
  • Whether the xpubs of missing co-signers can be obtained from any surviving record assessed early
  • Estate or corporate authority confirmed before any key work begins

Legacy and modern script coverage

Handling the full range of multisig implementations used over the years.

  • P2SH legacy, P2WSH native SegWit, and P2TR Taproot script types all covered
  • Older wallets that used script types current software no longer offers by default
  • Coordinator software identity, such as Sparrow, Specter, Electrum, or Bitcoin Core, used to narrow plausible configurations
  • Nested and non-standard script structures reconstructed rather than assumed away
  • The full range tested rather than defaulting to a single modern assumption
  • The reconstructed wallet verified against its on-chain balance before anything moves

Coordinator and cross-wallet reconstruction

Rebuilding the wallet when the original coordinating software is gone.

  • Reconstruction of the wallet in a compatible coordinator when the original is unavailable
  • Import and verification across Sparrow, Specter Desktop, and Bitcoin Core descriptor tooling
  • Partial configuration files, such as a BSMS export, used where they survive
  • Key ordering resolved, since the same keys in a different order produce a different address
  • The rebuilt wallet confirmed to control the correct address before any spend is attempted

Estate and corporate coordination

Aligning technical recovery with legal authority where co-signers are unavailable.

  • Documentation suitable for legal proceedings produced where a matter requires it
  • Work alongside solicitors and executors on the authority to act
  • Coordination with Crypto Consulting NZ's estate, forensics, and expert-witness practice where required
  • Chain of custody maintained throughout, for both criminal and civil contexts
  • Recovery paused where ownership or authority is genuinely disputed

Verification and controlled spend

Confirming the rebuilt wallet before any funds are moved.

  • The reconstructed descriptor confirmed to derive the exact address holding the balance
  • Threshold signing tested and confirmed with the available keys before any real transaction
  • All work performed offline on air-gapped equipment
  • Funds migrated to a wallet you control only once signing is proven
  • The full working configuration and descriptor documented so the wallet is never stranded again

Failure modes

Failure modes we handle

  • 2-of-3 setup with one key lost

    Two of three still meets the threshold, so the wallet is functional. The usual obstacle is the missing configuration, not the missing key.

  • Co-signer deceased or unreachable

    Depends on the threshold and on whether the estate can produce the key or its xpub. Often solvable, and frequently a legal matter as much as a technical one.

  • All keys held but no compatible wallet software

    Reconstructable from the keys and the original parameters, rebuilt in current descriptor-based software.

  • Company wallet set up by a departed employee

    Common in corporate cases. Documentation and authority to act matter as much as the technical work here.

  • Keys present but the descriptor or config file is missing

    The hard case. If the xpubs of the other signers can be recovered from any record, this resolves. If they genuinely cannot, we will tell you honestly, because the keys you hold cannot derive the ones you do not.

  • Correct keys but the wallet rebuilds to the wrong address

    Almost always key ordering or script type. The same keys in a different arrangement derive a different address, and we resolve the arrangement.

Scam Warning

Most “crypto recovery” services are scams

If someone contacts you first about recovering your crypto, it's a scam - we only ever work with people who come to us. The rest ask for payment upfront, promise results nobody can promise, and want your recovery phrase typed into a website. Scammers also trade lists of people who've responded before, which is often how they found you.

Contact us

You'll hear back from Nic or Harry directly - not a call centre. Beware of scammers.

Contact us

Describe your situation in general terms - no recovery phrases or private keys through this form. We will call you back within 24 hours with an honest read on whether multisig recovery is possible in your case.

  • No fee unless we succeed

    10% of what's recovered, agreed in writing beforehand. Nothing if we fail.

  • We can come to you

    Anywhere in New Zealand, at our cost, for cases of significant value.

  • Nothing is retained

    Keys and phrases are destroyed or returned at the end of the engagement. NDA signed before we start.

Never send a recovery phrase or private key through this form, or through any website. Describe the situation in general terms and we will handle the sensitive detail securely on the call.

No fee unless we succeed. We respond within 24 hours.

FAQ

Multisig recovery - common questions

One of our three signers has died. Can we still access the wallet?

Usually, yes, in a 2-of-3, because you only need to meet the threshold, and two keys already do. The estate's key is not required to spend if the other two are available. The more common obstacle is reconstructing the wallet configuration, which we handle. Where the threshold genuinely cannot be met, it becomes a legal and estate question as much as a technical one.

I have all the keys but the wallet won't rebuild. Why?

Because keys alone are not enough for multisig. The software also needs the exact key ordering, the threshold, the derivation paths, and the script type, all of which live in the output descriptor. If that is missing, the configuration has to be reconstructed and verified against your known address, which is the core of this work.

What is a wallet descriptor?

It is a single text string that fully describes how your multisig wallet is built, the script type, the threshold, every co-signer's extended public key, and the derivation paths. Importing it into compatible software recreates your exact wallet. It is as important to back up as the seed phrases themselves, and its loss is the most common reason a multisig becomes hard to recover.

I have my key but not the other co-signers' details. Is that recoverable?

This is the honest hard limit of multisig recovery. The wallet address depends on every signer's extended public key, and the keys you hold cannot mathematically reveal the ones you do not. If those xpubs survive in any record, export, or backup, we can rebuild from them. If they are genuinely and completely gone, no one can reconstruct the wallet, and we will tell you that rather than take a fee.

Can you help with a corporate multisig?

Yes. Corporate cases often turn as much on authority to act as on the technical reconstruction, so we work alongside your solicitors, confirm the authority, and can produce documentation suitable for proceedings through Crypto Consulting NZ's forensics and expert-witness practice.

Which multisig wallets and formats do you handle?

The common coordinators and script types, including Sparrow, Specter Desktop, Electrum, and Bitcoin Core, across P2SH, P2WSH, and P2TR. Identifying which coordinator originally created the wallet is one of the first things we do, since it narrows the plausible configurations sharply.

We used a custom, non-standard setup. Does that matter?

It makes reconstruction harder but not necessarily impossible. Non-standard derivation paths, key orderings, and script types all widen the search, but each candidate is still testable against your known address, and a match is a match. What determines the outcome is whether enough of the configuration and the co-signer xpubs survive.