Zcon3 2022
as the organisers put it
Zcon is an annual conference organized by the Zcash Foundation. This year's event, Zcon3, will be taking place in the summer, with a
who it's for
zcash developers, cryptography researchers, wallet and client engineers, privacy advocates and activists, blockchain governance contributors, security engineers, regulatory and compliance specialists
topics
Zebra Rust node implementation; FROST threshold signatures; NU5 consensus activation; Orchard shielded assets; hardware wallet Ledger integration; elastic SNARKs with KZG commitments; Halo 2 zero-knowledge proofs; zkEVM tooling with PIL and Circom; proof carrying data; proof of stake transition; decentralized governance scaling; OFAC Tornado Cash sanctions
| title | author | length |
|---|---|---|
| Code alone doesn't cut it! Opening Address | Jack Gavigan | 28m |
Conference opens with specific operational rules (masking, no handheld mic, questions via Discord, live stream on Zcash Foundation YouTube) and admits recent… | ||
| on the OFAC Tornado Cash SDN listing | Peter Van Valkenburgh | 30m |
OFAC puts Tornado Cash on the SDN list by naming the tornado.cash URL and 45 ethereum smart contract addresses, treating protocol contracts as blocked… | ||
| Protecting Civil Liberties With Privacy-Enhancing Technology | Kurt Opsahl | 59m |
Argues that privacy is a human right that enables free expression and cites concrete fights: WikiLeaks 2010 payment block pushed donors to Bitcoin, PayPal and… | ||
| State of Legislation, Regulation and Policy | Kurt Opsahl, Peter Van Valkenburgh, Paul Brigner, Jack Gavigan | 31m |
Panelists catalog concrete policy moves: a lawsuit is filed challenging the expanded 6050i reporting rule (suing Treasury over 6050i), FinCEN’s 2019 guidance… | ||
| Zebra Update | Teor | 30m |
Zebra is an independent Zcash node written in Rust that now activated NU5 on mainnet and testnet and fully validates consensus rules; it implements a mempool… | ||
| FROST Research Updates | Chelsea Komlo, Elizabeth Crites | 31m |
FROST is a two-round concurrent-secure Schnorr threshold scheme with a pedpop DKG that cuts signing exponentiations in the optimized variant (FROST II) from t… | ||
| FROST Engineering Updates | Deirdre Connolly, Conrado Gouvêa | 29m |
A fully generic Rust library frost-core implements the IETF two‑round FROST spec in ~300 lines, replacing ~3,000 lines of curve‑specific code; implemented… | ||
| Zcash Grants Committee (ZCG) Panel: Past, Present, and Future | Cody Burns | 47m |
Committee outlines a concrete pipeline: a published RFP/RFI initiative that already hires a community notetaker, ongoing community security audits, and RFIs… | ||
| Orchard Shielded Assets | Daniel Benarroch, Pablo Kogan | 50m |
Proposal implements issuer key + 512‑byte description to derive an asset type (hash-to-curve), adds per‑type value base point for homomorphic value… | ||
| Marketing ZEC | Chris Tomeo | 31m |
Surveys of roughly 8,000 respondents (US, India, Nigeria) reveal 82% of US respondents say financial privacy matters but rank it low among crypto concerns, and… | ||
| Zondax HW wallet support: from 0 to Hero | Francesco Dainese, Ida Tucker | 43m |
Zondax delivers a working Ledger app and desktop integration that lets Zecwallet Lite create and broadcast shielded Zcash transactions: heavy tasks (note… | ||
| Gemini: Elastic SNARKs for Diverse Environments | Michele Orru | 25m |
Gemini claims a single SNARK construction that admits either a logarithmic-space prover or a linear-time prover while producing the same verifier-facing proof… | ||
| Advancing Human Rights With Tor | Isabela Fernandes | 44m |
Tor frames privacy as a human-rights tool and reports concrete results: a decentralized network with 6,000 relays, a campaign that doubles bridge capacity to… | ||
| Taiga: A dark forest of zero-knowledge programmability | Christopher Goes | 41m |
Taiga is an implemented architecture for private counterparty discovery that claims a fundamental privacy boundary: the who (identities) can be hidden but the… | ||
| Understanding the Moon Math of ZK Snarks workshop | Anna Kaplan, Liz Steininger | 43m |
Step-by-step construction of a Groth16 proof by hand: statement "x1x2x3 = x4 mod 13" becomes an algebraic circuit, then R1CS → QAP polynomials, with chosen… | ||
| Tooling for building zkEVM: PIL and Circom | Jordi Baylina | 44m |
Polygon Hermez builds a zkEVM prover that models full EVM state transitions as polynomials instead of R1CS, using PIL to declare state, permutation and lookup… | ||
| Building a world class UX for ZEC | Josh Swihart | 38m |
Electric Coin Co. pivots to make ZEC easy to buy, hold and spend, reporting user-estimates from recurring Google Surveys and Hotjar that suggest 3.5–4M US… | ||
| The Future of Decentralized Applications on Zcash, a Shared Community Roadmap workshop | Daniel Benarroch, Pablo Kogan | 53m |
Assumes ZSA is live and maps concrete next steps: implement Orchard-based atomic swaps (low effort) and open recipient atomic swaps (moderate, needs protocol… | ||
| The Once and Future ECC Wallet (Dev and UX) | Pacu Gindre, Joseph Van Geffen | 44m |
ECC ships an open‑source mobile reference wallet plus SDKs and demo apps, built with Rust core crates, Kotlin/Compose Android, and SwiftUI iOS; it targets ≈90%… | ||
| Proof Carrying Data | Pratyush Mishra | 30m |
New constructions show proof‑carrying data (PCD) from simpler building blocks by replacing recursive SNARK verifiers with atomic accumulation and then split… | ||
| Motivations of Proof of Stake | Zooko Wilcox | 32m |
Argument: moving Zcash from proof‑of‑work to proof‑of‑stake aims to widen who can earn rewards, reduce mining-driven sell pressure, and lower centralization… | ||
| Electric Coin Company: Proof of Stake | Nate Wilcox | 01h 02m |
Electric Coin Company is actively researching a move from Zcash proof-of-work to proof-of-stake and presents concrete preferences: prioritize finality over… | ||
| The Future of Zcash Panel | Daniel Benarroch, Nate Wilcox, Zaki Manian, Matthew Green | 01h 01m |
NU5 activates at the end of May and the roadmap pivots to move to proof of stake with ECC buy‑in while QEDIT builds shielded assets (ZSAs) to enable… | ||
| Halo 2 Community Showcase | Ying Tong | 45m |
Halo2 is already forked 132 times and used by 203 projects with 22 contributors and shows concrete extensions: a zkEVM fork replaces the inner product… | ||
| A Forest of Levers: The Performance of Orchard | Jack Grigg | 58m |
Focuses on reducing verifier time and proof size for Orchard by using Halo 2 primitives, floor planning and gadget/chip abstractions. Circuit uses degree bound… | ||
| Securely Scaling Decentralized Governance | Michael Lewellen | 41m |
Explains concrete failure modes and defenses: on-chain upgrades can introduce bugs (Compound proposal 62 causes a $147M bug), token voting enables plutocratic… | ||
| Explaining the Security of Zcash | Daira Hopwood | 01h 05m |
Deep dive into Zcash security claims: protocol proves balance and spendability via note commitments, nullifiers, and a binding signature layered over… | ||
| Agoric: Zcon Overview | Dean Tribble | 39m |
A layer-1 PoS chain on Cosmos SDK exposes hardened JavaScript smart contracts with object-capability security to avoid reentrancy and run untrusted modules as… | ||
| Governance Panel | Andrew Miller, Jack Gavigan, Hudson Jameson, Zooko Wilcox, Alan Fairless, Amber Baldet | 49m |
Two formal rules govern current Zcash power: trademark agreement decides which chain can be called Zcash and ZIP‑1014 dev fund slice for community grants funds… | ||
| Town Hall | Andrew Miller, Jack Gavigan, Hudson Jameson, Zooko Wilcox, Alan Fairless, Amber Baldet, Peter Van Valkenburgh | 01h 16m |
Panel answers outline why a US 501(c)(3) legal limit prevents the foundation or Bootstrap from making coinholder votes binding, and why token-weighted… | ||
| Pool Retirement | Nate Wilcox | 01h 00m |
Proposal defines a deterministic pool lifecycle: new pool active 24 months, then a 6‑month closing period (no ingress), then a penalized phase where an exit… | ||
| New to Zcash? z2z & learn! | Aditya | 19m |
Overview of mobile z2z privacy, concrete timeline and a working demo: Zcash launches Sprout (2016), Sapling (2018) for fast mobile proofs and Orchard (2022)… | ||
| Free2z: Peer-to-Peer Giving | Skylar Saveland, Jonathan Bird | 43m |
Free2z integrates Zcash into a simple web app so people receive shielded peer-to-peer donations with no PII, a username/password signup, and a tiny 0.001 ZEC… | ||
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