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

Overview Debates Related claims Topics Sources

The fixCleanup3_4_0 package updates vault asset rounding calculations, loan default criteria, and cryptographic signature role prefixes to prevent signature reuse across different roles.

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.

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.

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

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.

In October 2026, an internal Anthropic research model using Claude took under 30 minutes to solve a 25-year-old cryptographic mystery regarding the origins of the NIST P-256 and other elliptic curve seeds supplied by the National Security Agency

Anthropic's Claude AI model traced the NIST P-256 seed to candidate number 1842 produced by lrand48, a standard Unix pseudorandom number generator initialized with a timestamp on August 16, 1997

Cryptographic suspicions surrounding NIST P-256 intensified after the 2013 Edward Snowden disclosures revealed National Security Agency efforts to weaken cryptographic standards

Anthropic researchers tasked an internal Claude AI model to investigate the NIST P-256 and other elliptic curve seeds without telling the model the historical theory that the seeds originated from a forgotten phrase

National Security Agency mathematician Jerry Solinas handed the P-256 elliptic curve seeds to the ANSI X9.62 committee in fall 1997 without explaining how the starting numbers were chosen

In 2000, the U.S. National Institute of Standards and Technology standardized the P-256 elliptic curve in FIPS 186-2 based on designs supplied by the National Security Agency