Zcash Shielded News | Vol.5
Vitalik Buterin Donates to Shielded Labs, ZCG | Meeting Minutes (Feb 3, 2026), Builders built! Hackmas 2025 shipped, Retroactive Grants | NEAR, Maya & ZChat & more
Zcash Shielded News is a community article format based on the weekly Zcash Ecosystem Digest Newsletter.
Providing insight on current events and informing the community about important news in the Zcash ecosystem.
Check out the best Highlights below!
Fact of the Week💡
zKool isn’t just “another Zcash wallet”, it’s a power-user, non-custodial wallet built to handle nearly every Zcash account type and all three pools (Transparent, Sapling, Orchard), with features like diversified shielded addresses, multi-account organization, and even shielded multisig via FROST.
📩 In today’s edition:
🤝🏻 Vitalik Buterin Donates to Shielded Labs to Support Crosslink Development
• Vitalik has contributed to Shielded Labs, helping fund continued work on Crosslink and broader protocol R&D.
📝 Zcash Community Grants | Meeting Minutes (Feb 2, 2026)
• The latest ZCG minutes are out, covering funding decisions, proposal updates, governance threads, and what the committee is prioritizing next.
🛠️ Builders built! Hackmas 2025 shipped | ZF
• Hackmas wrapped with a strong batch of shipped projects—tooling, apps, and protocol experiments—plus demos and follow-ups for what’s getting continued support.
🗳️ Retroactive Grants | NEAR, Maya & ZChat Proposals
• A quick look at the newest retroactive funding proposals and what they’d support, from ecosystem builders to media and community infrastructure.
👨💻 Nikete Completes First Independent Security Review of Shielded Labs’ Crosslink
• Nikete’s independent review validates Crosslink’s finality design, surfaces critiques and potential attacks, and kicks off a broader hardening phase ahead of activation.
On the 6th, Shielded Labs posted a note on X saying that Vitalik Buterin donated to support continued development of Crosslink, a security-focused upgrade to Zcash’s consensus architecture.
Shielded Labs said the funding will help move Crosslink from a prototype toward a persistent, incentivized testnet (where participants can earn ZEC) and, eventually, production readiness.
Crosslink is designed to strengthen Zcash’s existing Proof-of-Work chain by adding a parallel finality layer that helps defend against chain reorganizations and rollback attacks, while keeping block production and economic activity on the PoW chain.
The organization argues that stronger finality would reduce double-spend risk, shorten confirmation requirements for exchanges, improve reliability for cross-chain integrations, and make Zcash easier to integrate across the broader crypto ecosystem without changing its core security model.
According to Shielded Labs, next steps include productizing the prototype, formal design specifications, security analysis and audits, coordination with wallets and infrastructure providers, and ongoing community engagement. They noted that any path to mainnet activation will depend on technical readiness, security review, and broad community support.
Vitalik was quoted praising Zcash’s focus on privacy and saying Crosslink could make Zcash more secure while operating on a lower security budget, supporting long-term sustainability.
Shielded Labs added this is his second donation to the organization, following an earlier contribution in 2023 that helped form a dedicated Crosslink team.
Thank you, Vitalik, for supporting the ecosystem and privacy. 🙏😊
Attendees: Artkor, GGuy, Hanh, Zerodartz, Decentralistdan, Alex (FPF, notes)
Decisions & proposals (requested amounts + purpose)
Zcash Arabia - Q1 2026 (US$7,500) | Open
Arabic-language education + community growth across MENA (academy content, events/AMAs, partnerships, wallet adoption like Zashi) plus developer support (workshops, docs, hackathons).
Open-source Zcash block explorer + privacy analysis; plans to add wallet privacy scoring, real-time guidance APIs, human-readable explanations, and a weekly “Privacy Index,” while maintaining free infra (API, Lightwalletd endpoints, indexer).
Grassroots Marketing at ETHDenver 2026 (US$9,000) | Approved (async, unanimous)
Conference presence at ETHBoulder/ETHDenver to onboard users, educate, build partnerships, and document acquisition, building on a prior pilot that onboarded 34 new users.
Chain.Love (US$24,000) | Declined (unanimous)
Marketplace/portal for discovering Web3 infra services (UI + API). Committee cited weak proof of user base, heavy ongoing maintenance, and unclear long-term impact for Zcash.
Zcash Sapling Parameters Availability Hardening (US$30,000) | Declined (unanimous)
Improve reliability of Sapling parameter downloads via multi-origin, hash-verified fallbacks and mirrors. Committee felt it’s a minor/app-layer problem, overpriced, and would require core dev review bandwidth.
Zcash Turkey (US$31,000) — Open
Create “ZBase” operations (small office + equipment) to professionalize and make the team more sustainable while continuing workshops/events. Committee wants more clarity on self-sustaining plan and questioned the chosen location/need for a fixed space.
Zcash Foundation (ZF) shared its first engineering update of 2026, previewing several projects built during last year’s “Hackmas,” with deeper posts planned later.
Unified RPC for the Z3 stack (in progress)
The team is working toward a single RPC endpoint for Zebra, Zallet, and Zaino, aiming to publish a merged OpenRPC spec and transparently route calls to the right backend, making integrations easier for exchanges and wallets.
Mining pipeline (Testnet → Mainnet)
ZF set up a mining pipeline to produce a block with a shielded coinbase transaction, tested on Testnet and now awaiting a matching block on Mainnet. The work also refreshed mining docs, Dockerized the setup, and added support for generating custom genesis blocks to start custom testnets from scratch with Zebra.
FROST support in zcash-devtool
The team added preliminary FROST support to streamline multisig-style workflows: PCZT support in zcash-sign for standardized “transaction plan” files, refactoring frost-tools to work better as a library, and a safer flow where the client shows PCZT contents before signing. This lets zcash-devtool coordinate FROST signing sessions end-to-end.
“What’s New” tool (repo change tracker)
ZF built a CLI + libraries that normalize releases/changelogs/commits across many repos into a single format, with category filtering and confidence scoring to reflect inconsistent inputs.
Zentity (privacy-preserving onboarding test case)
The team advanced a privacy-first identity verification flow designed to avoid storing PII while staying compatible with standards like verifiable credentials, OAuth, and OIDC.
Work included stabilizing liveness checks, integrating ZK proofs, hardening auth, and improving deployment/security (CI/CD and container hardening).
Zeeder (Rust DNS seeder, beta)
ZF developed a modern, high-performance DNS seeder in Rust to replace legacy implementations. It integrates with zebra-network for protocol-update compatibility and adds features like per-IP rate limiting, Prometheus metrics, and a lock-free address cache. It’s in beta and ready for production testing.
Faster Zebra initial sync (13–35% gains)
The team benchmarked multiple changes and found the main bottleneck isn’t always the state service, often it’s zebra-network and the syncer. Individual changes improved initial sync performance by roughly 13–35%.
A few retroactive proposals have been shared with the Zcash community. Retroactive grants are designed to reward work that’s already completed and publicly verifiable (as opposed to funding something that might be built in the future). In short: ship first, get considered for funding after.
1) NEAR Intents support for Zcash
Requested amount: $800,000
What was delivered:
Production integration connecting Zcash to NEAR Intents
Enables users to convert 130+ assets into ZEC
Intended to drive usage of the Orchard pool
Reportedly unlocked downstream integrations and created more venues to trade ZEC
2) Maya Protocol — Advanced Shielded ZEC Support
Requested amount: $45,000
Category: Infrastructure
What was delivered (already in production):
End-to-end shielded ZEC support on Maya’s cross-chain DEX
Users can swap to/from shielded addresses (Sapling/Orchard) directly, without intermediaries
Key engineering highlights include:
Shielded inbound support + memo handling
Shielded swap outputs to Unified Addresses, Sapling, and Orchard
Shielded memo parsing via trial decryption
Address normalization (TEX/UA)
NU6 / NU6.1 upgrade support
UTXO management hardening (solvency checks, double-spend prevention)
Rust-to-Go FFI bindings for shielded crypto operations
Work is presented as publicly verifiable via merged code changes and a long development window (June 2025 – Feb 2026)
3) ZChat - Zcash-native private messenger
Requested amount: $5,000
What was delivered (already working):
A native Android messenger where each message is a shielded transaction
No phone number/email requirement; no servers storing messages (messages sent via Zcash memos)
Features include:
Direct + group messaging, encrypted memos
Long-message chunking beyond the 512-byte memo limit
Payment requests (ZIP-321), reactions, read receipts, reply threading
Security hardening: HKDF key derivation, authenticated key exchange, forward secrecy for group keys, safer message handling patterns
Claims ongoing community updates and a hackathon prize
Shielded Labs just wrapped up the first independent security and mechanism-design review of Crosslink, led by Nikete. The point isn’t to say “it’s done,” but to put the design under pressure, check the core assumptions, and start tightening things up as Crosslink moves beyond the prototype stage.
One big takeaway: the review confirms Crosslink does introduce finality, and that finality behaves the way it’s supposed to. That’s a meaningful validation and adds confidence in the core architecture. At the same time, the report includes critiques, proposed attacks, and a bunch of improvement ideas, and the team is already using that input to refine and harden the design.
Not every suggestion will make it into the next iteration. Some changes may be better saved for later versions (including post-mainnet), and in other cases the team may take different approaches, balancing speed, complexity, and security.
They published the report publicly to keep the process transparent and invite open discussion. Over the coming week, they also plan to host a community walkthrough of the findings, the trade-offs, and what they’re thinking for next steps, alongside more security work and additional independent reviews before activation, including a closer look at safety, production readiness, and privacy implications.
ZecHub DAO Proposals
Zcash Ukraine Regional Community (Rejected)
Coordinator: Beyond (Zcash Ukraine)
Project: Ukrainian-language content + community growth, including social posts, educational articles, and Zcash Ukraine Hub maintenance
Period: Feb–Apr 2026 (3 months)
Requested: $400/month ($1,200 total)
Zcash Global Ambassador Elzz (Approved)
Coordinator: Elzz (Zcash Global Ambassador)
Project: Experience-led onboarding and community activation to drive ZEC usage (meetups, X Spaces, #12DaysOfZECmas, access partnerships like Pajcash)
Period: Feb-Apr 2026 (following Nov 2025–Jan 2026 tenure results)
Requested: $3,000 total ($1,000/month)
Zcash Luma Calendar Management (Approved)
Coordinator: UknowZork
Project: Renew Zcash Luma calendar management (weekly verified event updates + simple branded visuals, categorization, and community coordination)
Period: Ongoing renewal on a monthly cycle (weekly reviews)
Requested: $110/month