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ZEC $1,143 Zcash builder proposes fresh keys for NEAR swap privacy
Zakura proposes one-time viewing keys to limit quantum exposure from NEAR Intents swaps.
Key takeaways
- Swap exposure capped. Each NEAR trade would get its own viewing key, with recovery stopping after 30 empty addresses.
What happened
A development group focused on shielded wallet software has circulated a plan to limit future quantum disclosure around cross-chain trades. The idea assigns a distinct viewing credential to every private address that appears during a swap through NEAR Intents. If one credential were later recovered, it would reveal only that single exchange. Developer Adam Tucker authored the outline. The draft remains under examination and has not launched.
Swap flow through the service differs from routine shielded payments. People normally pass a private address directly to a payer. With Intents, the wallet embeds a shielded return address in the order. That address is written to the NEAR ledger after the deposit is noted. It stays visible even when the exchange succeeds and no coins return. Orders that move assets into shielded ZEC also leave the destination visible.
The fix varies privacy material while leaving balances in place. It mints a new viewing credential per exchange from a hashed counter. Control over spending stays unchanged, so funds remain together. Separate accounts were rejected because popular hardware signers would have forced awkward steps. For recovery, the wallet stores an encrypted note with the counter, scans public filters, then queries payouts through a retrieval method that hides the request from servers. Checks of incoming addresses end after 30 consecutive blanks.
First $1.6KLatest $1.2K-26.3% over the period
Points are daily observations, not closing prices.
Why it matters
Shielded addresses can appear unrelated while sharing one secret for viewing at the account level. Ordinary machines cannot derive that secret from an address. A powerful enough quantum system using Shor logic could do so and show sums plus attached notes for earlier receipts. No such capable hardware exists at present. Until the planned Tachyon upgrade, any address kept on a public ledger carries that forward-looking linkage worry.
Narrowing each credential to one exchange shrinks later exposure. A future recovery would show a single trade rather than a full history. Viewing access alone cannot move coins, because spending needs different keys. Users would keep one balance and one spending authority, preserving familiar habits. For frequent swappers, containment without extra management is the central gain.
What the data shows
Market readings place ZEC at 1172.3 USD in the latest snapshot. Capitalization registered 19918889862 USD while turnover over the prior day reached 1024162669 USD.
Background
Programs built with Zakura libraries, including Vizor, may adopt the technique within weeks. Hardware models would follow after firmware changes. The change addresses only Intents-linked exposure and leaves everyday shielded transfers as they are.
What is still unclear
- Exact launch timing is not set beyond near-term adoption hopes for software wallets.
- Firmware readiness for Keystone and Ledger devices plus schedule for Tachyon remain unstated.
Questions readers ask
Why do NEAR Intents swaps expose Zcash addresses?
The service writes the shielded return address to its public ledger after logging the deposit, where it stays even without a refund. Receiving addresses for swaps into shielded ZEC are also published.
Could a quantum computer steal funds with a viewing key?
No. A recovered viewing credential would reveal past receipts, sums and notes, but spending requires separate keys. The risk is loss of privacy, not direct loss of control.
When will wallets offer one-time viewing keys?
Software wallets using Zakura libraries may add support within weeks. Hardware wallets will follow once firmware allows the new derivation.
