NEAR Intents permanently publishes a user's Zcash refund address on NEAR's public blockchain during cross-chain swaps, creating a public record even if no refund occurs.

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The AUTH service allows users to transfer digital assets between linked accounts without manually copying alphanumeric wallet addresses or selecting a blockchain network.

The Aptos-to-B² Bridge used for aBTC redemptions will remain available after Echo Protocol concludes its wind-down.

Zakura developer Adam Tucker stated that a single published shielded address exposes payment histories until Project Tachyon's recursive proof upgrade deploys.

A quantum computer running Shor's algorithm could theoretically recover an incoming viewing key from a publicly exposed Zcash address to link an account's wider payment history.

Zcash developers have targeted January 2027 for introducing post-quantum signature opcodes to protect transparent transactions.

Zcash developer Zakura proposed assigning a one-time incoming viewing key to every ZEC swap routed through NEAR Intents to protect transaction privacy against future quantum computing risks.

Aurora Intents processed over $19 million across 1,718 ZEC-denominated swaps for a zkSNARKs auction in September 2026.

Zakura's design uses private information retrieval to enable wallets to look up refund transactions during restoration without exposing queried addresses to database operators.

Hardware wallets will support Zakura's one-time viewing key design once their respective firmware accommodates the new key derivation process.

Zakura rejected creating separate Zcash accounts for each transaction because Keystone hardware wallets sign only from account index 0 and Ledger devices require separate approvals for each account.

Zakura's proposal limits potential quantum exposure to a single swap while keeping a wallet's main spending key unchanged, maintaining funds under a single account.

Software wallets using Zakura's open-source libraries, such as Vizor, could integrate the per-swap viewing key feature within weeks.

Zcash Open Development Lab CEO Josh Swihart stated in May 2026 that between $600 million and $700 million had flowed through Zcash's NEAR Intents route.

Shielded Labs announced project Epoch on October 1, 2026, aiming to develop post-quantum cryptography for Zcash by the end of 2027.

Zakura already uses private information retrieval for Zcash coinholder voting lookups and transparent wallet monitoring.

The August 2026 Vottun Bridge exploit exposed operational risks tied to outer components, including the Vottun Bridge, of the Qubic network

In August 2026, the Vottun Bridge linked to the Qubic network was exploited in a security incident separate from Qubic's October 18, 2026 wallet drain

Cysic indefinitely suspended its cross-chain bridge on October 17, 2026 following an unauthorized CYS token mint, providing no timeline for its return

Cysic described the October 17, 2026 bridge incident involving the unauthorized CYS mint as limited to bridge message processing and token minting, with its mainnet and other operational systems remaining unaffected

Early investigation findings into Cysic's October 17, 2026 exploit indicate a potential link between the unauthorized mint of 10 million CYS tokens, unauthorized database access, and bridge processing logic weaknesses