The Frontier

Josh Swihart explains Zcash's shielded pools are cryptographic upgrades: Sprout, Sapling, then Orchard. A vulnerability discovered by researcher Taylor Hornby in Orchard has been patched, but caused withdrawals.

Swihart says Zcash transitioned from a Bitcoin fork with a trusted setup in 2016 to a post-trusted setup world using Halo 2 cryptography, which solved scalability and trust issues.

Josh Swihart attributes Zcash's 2024 resurgence to governance and funding reforms, a focus on user experience via Zashi/ZODL wallet, and integrations like Keystone hardware wallets and Near swaps.

Swihart cites user research by Peacemonger showing Zcash had a negative Net Promoter Score for user experience in late 2023, driving ZODL's focus on making 100 users happy with shielded transactions.

Swihart says shielded Zcash adoption grew from 11% of circulating supply at the start of 2024 to over 30% by late 2025, driven by wallet improvements and swap capabilities.

Swihart states Zcash's fungibility means coins cannot be tainted by prior criminal use, contrasting with Railgun's approach of working with blockchain analysis firms to vet 'clean' coins.

Josh Swihart recounts that governance was reformed by killing the trademark agreement and dev fund addresses baked into the chain, moving to a model where organizations apply for retroactive grants voted by coin holders.

Swihart explains the shielded assets proposal stalled due to lack of clear community consensus and issuer requirements like KYC and fund freezing that conflict with Zcash's privacy ideals.

Swihart details that spending shielded Zcash to a transparent recipient keeps the sender's balance and history private, even if the recipient's chain activity is public.

Josh Swihart describes the 2025 corporate fork: a board dispute led the entire ECC team to leave and form Zcash Open Development Lab (ZODL), a for-profit company focused on wallet revenue via swaps.

Swihart says ZODL's business model charges 50 basis points on wallet swaps, aims to add more user-paid services, and is not currently profitable.

Swihart notes developer decentralization: core work now involves Zcash Foundation, Shielded Labs, Tachion, Valor Group, and ZODL, versus only ECC at launch.

Swihart defends transparent handling of the Orchard bug, arguing it built team trust despite market FUD, and required intense 24-hour coordination with mining pools and exchanges.

Swihart outlines upcoming protocol upgrades: Ironwood, a formally verified Orchard replacement targeted for July 2025, followed by Tachion, which simplifies circuits for scaling.

The host argues Monero community criticism of Zcash as 'not cypherpunk' and 'for VCs' is a zero-sum tribal stance, while Zcash's narrative normalizes privacy for everyday use, not criminal activity.

Kieran Mesquka argues public blockchain activity, especially on Ethereum, risks leaking sensitive personal habits and financial strategies, making privacy a necessity for serious adoption.

Mesquka distinguishes Railgun from Tornado Cash and Zcash by its ability to execute DeFi operations directly from shielded balances using multi-calls.

Naomi Brockwell’s privacy approach focuses on incremental improvements through intentional behavior, like opting out of unnecessary data sharing.

Modern smart TVs collect content ID data from any HDMI source, not just built-in apps, creating pervasive backdoor data collection.

Mesquka attributes law enforcement issues for Tornado Cash founders to public relations and marketing choices, contrasting Railgun’s approach.

Railgun uses a Private Proof of Innocence (PPI) system to filter transactions, aiming to maintain a clean privacy set and avoid mixing with illicit funds.

Mesquka cites Groth16 zk-SNARKs as the current sweet spot for Railgun, balancing cryptographic durability, verifier efficiency, and scalability.

Mesquka’s privacy philosophy prioritizes building privacy where usage exists, rather than convincing users to abandon modern conveniences.

The Railgun protocol has been deployed to Arbitrum, BSC, and Polygon, with Ethereum remaining the primary chain due to its DeFi activity.

Mesquka suggests Bitcoin’s cultural prioritization of stability over feature expansion has hindered the adoption of advanced privacy solutions like Zcash.

Future privacy tech interests for Mesquka include private information retrieval standards and Ethereum EIPs like 7702 that improve wallet programmability.

Kieran Mesquka discovered Bitcoin through online cypherpunk communities and built mining clients to understand its consensus mechanics.

Mesquka engaged with Ethereum after its launch because Parity’s embedded Remix IDE allowed scripting without needing to fork a full node.

The Railgun project is roughly six years old, with Mesquka being a prominent public contributor but not claiming majority credit.

Calin Culianu says Bitcoin Cash is the result of a broad effort, not a creation of Roger Ver, who merely provided financial backing through Bitcoin.com in its early days.