A question we get from customers who’ve been burned by an exchange collapse: what happens to a Tangem Wallet if Tangem itself goes away? Servers off, app pulled from the store, company gone. It’s a fair thing to ask before you put years of savings on a card.
The short version is that the wallet keeps working, because it was never depending on Tangem in the first place. Here is what actually relies on Tangem’s servers, what doesn’t, and what you’d do in the worst case.
Tangem doesn’t hold anything of yours
Your private key is generated on the card’s chip and stays there. Tangem has no copy. There is no account, no password reset email, no cloud backup of your wallet and no custody service holding coins on your behalf. The company sells you the hardware and publishes the app; after that it is out of the loop.
That’s why Tangem is often described as a wallet that works even if the company disappears. You can read more about how we sell and support it in New Zealand at Tangem NZ.
What a transaction actually touches
1. You build it in the app
Pick the coin, paste the address, enter the amount. This all happens on your phone.
2. The card signs it
You tap the card and enter your access code. The chip signs the transaction with the private key and hands back only the signature. The key never leaves the card.
3. The app broadcasts it
The signed transaction goes to public blockchain nodes through ordinary, publicly available APIs. The app has several of these configured per network and switches if one is down. None of them belong to Tangem. The Bitcoin network doesn’t know or care which app sent the transaction.
No Tangem server is involved in sending or receiving crypto.
What Tangem’s servers do provide
The app does call home for a few conveniences. If those services vanished, here is what you’d notice.
Card authenticity check
When you scan a card, the app verifies it against Tangem’s attestation server to confirm it’s genuine. If the server can’t be reached you get a warning that validation couldn’t be completed. The wallet still opens and still signs. Your funds aren’t affected either way.
Prices in NZ dollars
The NZD value shown against each balance comes from a price feed. Without it you’d see coin amounts but no dollar figures. The coins themselves are exactly where they were.
Token lists
Your list of added tokens is kept on the phone and synced for convenience. Offline, you might have to re-add a token manually on a new phone. Again, this is display, not custody; the tokens exist on their blockchains regardless.
If the app disappears from the stores
The Tangem app is open source. The code is on GitHub, mirrored by anyone who has ever cloned it, which is a lot of people. In a scenario where the app is gone from the App Store and Google Play, Android users can install a build directly, and anyone with a developer can compile it from source. The card speaks a documented protocol, so other software can be written to talk to it.
If you also created the optional seed phrase at setup, you have a further exit: import it into any BIP-39 compatible wallet and carry on without Tangem hardware at all.
Built to outlast the company
The chip is rated for more than 25 years of use and carries a warranty to match. There’s no battery to age and no firmware to go stale, because the firmware can’t be changed. A set bought today should still sign transactions in the 2050s, whether or not Tangem is around to see it.
What this means for you
The only things that can lock you out of a Tangem wallet are losing all your cards without a seed phrase, or forgetting your access code with no second card to reset it. Neither of those involves Tangem’s servers, app stores or solvency. Keep the cards apart, keep the code somewhere safe, and the wallet will keep working through outages, acquisitions and whatever else happens to the company.
Tangem sets are in stock in Auckland at tangem.nz, Tangem’s authorised New Zealand seller, with NZ$ pricing including GST.
