Crypto World
Zakura Common Targets Zcash’s Wallet-Side Privacy Bottleneck
In the latest Zcash news, Zakura released Zakura Common on August 31, an open-source cryptography toolkit the team says reduces shielded Zcash transaction creation from more than three seconds to under 200 milliseconds in some cases, according to Zakura’s announcement.
The team says mobile proof generation is more than 14 times faster, addressing one of the biggest delays users face when sending private ZEC.
Desktop transaction creation is more than five times faster under the new stack, according to Zakura. The team also reports Sinsemilla hashing improvements exceeding 21 times, trial decryption that is more than 1.5 times faster, and zk-SNARK verification that is between four and eight times faster.
Wallet developers can adopt the open-source libraries without a Zcash network upgrade or consensus change. Zakura has moved its node software to the new stack in its upcoming 1.3.0 release, while Vizor Wallet is among the first to adopt it.
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Zcash News: Why the wallet-side delay matters
Shielded Zcash transactions hide the sender, receiver and amount transferred. Before a payment can be broadcast, the user’s wallet must perform substantial cryptographic work to prove that the hidden transaction still follows network rules.
That computation happens on the device before the blockchain processes the payment.
That step is among the reasons shielded transactions can feel slow even when the network itself has not yet done anything. Zakura Common targets this wallet-side bottleneck rather than block production or consensus timing, and the changes do not require an upgrade to Zcash itself.
According to Zakura, wallets using the new libraries should sync faster. Full nodes running Zakura are also expected to benefit from faster transaction checks, reduced orphan rates and faster transaction propagation. The performance figures are Zakura’s own benchmarks.
Part of a larger scaling push
Zakura is a separate Zcash node implementation led by Zcash cofounder Sean Bowe in collaboration with Dev Ojha. Its node software is separate from the Zcash Foundation’s existing implementation. According to the source, it is being used as an early testing ground for broader scaling work, and Project Tachyon has also moved to the new stack.
Zcash’s scaling challenge is not limited to block production speed. Node verification time, the volume of data wallets must download and client-side proof construction are separate bottlenecks that Zakura’s work addresses in parallel.
Zakura’s stated long-term target is more than 50,000 private transactions per second, roughly the scale of major card networks, compared with a described ceiling of about one transaction per second for today’s wallet software. Zakura says its software can already handle the 25-second block times proposed for NU7, described as Zcash’s next major upgrade.
ZEC rose about 5% to near $839 after the release, though it was down Monday morning alongside a broader market pullback. Zakura is inviting wallets to switch to its cryptography libraries, which are publicly available for use on the current Zcash network.
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