Top all-time · #730
Z.Cash
Company blog · z.cash/blogsecurityeconomicsprogramming
Z.Cash is the company blog at z.cash, writing about security, economics and programming. Since 2016, 89 different Hacker News readers have linked it 121 times, most often “Funding, Incentives, and Governance”. No feed was found, so read it on the site itself.
Rarely recommended · 5 of 40 sampled comments recommend it?
Why HN links it
HN readers cite z.cash's pages on zk-SNARK technology, the founders' funding, and compliance when discussing privacy coins, mostly as sources in threads on cryptography and funding.
Summarised by Claude from a sample of 40 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
The first cryptocurrency to develop zero-knowledge encryption for private peer-to-peer payments. Use Zcash Learn Zcash Current price (USD) $ 50.13…
Most-linked posts?
- Funding, Incentives, and Governance11 people · 12 mentions · first linked 2016-02-05
- Zcash – Privacy technology for blockchains11 people · 11 mentions · first linked 2016-03-21
- /technology/zksnarks/5 people · 5 mentions · first linked 2020-10-18
- What are zk-SNARKs?5 people · 5 mentions · first linked 2017-04-27
- /5 people · 5 mentions · first linked 2016-03-12
- ZCash (formerly Zerocash/Zerocoin) technology preview4 people · 5 mentions · first linked 2016-01-20
- How to generate the SNARK parameters for Zerocash securely4 people · 4 mentions · first linked 2016-02-29
- Lessons from the History of Attacks on Secure Hash Functions3 people · 3 mentions · first linked 2017-02-25
- Zcash Counterfeiting Vulnerability Successfully Remediated3 people · 3 mentions · first linked 2019-02-05
- /technology/3 people · 3 mentions · first linked 2017-10-02
What Hacker News says?
Snowden is assuming that Worldcoin is saving hashes of eyeballs. That is not what Worldcoin is doing. Zero Knowledge proofs allow the system to prove that an eyeball exists without actually tying the biometric hash directly to an ID. From the article: "We use the open-source Semaphore[19] zero-knowledge proof system to transfer the uniqueness of IrisHashes to the uniqueness of user accounts, without linking them." N…
Comment linking /technology/zksnarks/
on “Edward Snowden Slams Sam Altman's Worldcoin: 'Don't Catalogue Eyeballs'”Submitted ZCash (formerly Zerocash/Zerocoin) technology preview as a story · 240 points
HN discussion"You can't have decentralization, censorship resistance, self sovereignty, ownership of your own stuff without privacy." - Zooko Wilcox-O'Hearn, Founder of Zcash. If anyone wants to give Shielded ZEC a try, get a Zcash Wallet from https://z.cash/wallets This is how fungibility looks like: https://zcashblockexplorer.com/transactions/d51f29739b753683...
Comment linking /wallets
on “What is money, anyway?”Submitted Zcash begins as a story · 209 points
HN discussionAnother anonymous coin which is interesting is zcash (with the cool URL https://z.cash )
Comment linking /
on “Things cryptocurrency enthusiasts probably won't tell you”Submitted Ethereum Adoption of Zk-SNARK Technology as a story · 153 points
HN discussionZcash | REMOTE | Full time | Engineering Project Manager The Zcash team is building a permissionless inclusive global financial platform. See https://z.cash for more info. We’re seeking an Engineering Project Manager to lead and grow our engineering team. Responsibilities: o Managing product development - Tracking product development - Clarifying requirements, including the use cases driving them - Maintaining a roa…
Comment linking /
on “Ask HN: Who is hiring? (August 2017)”Submitted Lessons from the History of Attacks on Secure Hash Functions as a story · 124 points
HN discussionCheck out the Zcash team building private internet money based on zk-SKNARKs https://z.cash/the-basics/
Comment linking /the-basics/
on “Privacy is the most important concept of our time”Submitted Zcash Integration Guide as a story · 69 points
HN discussion« Zcash only uses those for some transactions » No, Zcash offers the option to always use shielded transactions, if that's what you want. The choice to use a shielded or unshielded transaction rests solely in the hands of the user. It is true that CPU and memory complexity use to be high for shielded transactions. However Sapling just activated ( https://z.cash/blog/sapling-activation-complete/ ) and it resolves the…
Comment linking /blog/sapling-activation-complete/
on “Sweden's cashless society is no longer a utopia”Submitted Fixing Vulnerabilities in the Zcash Protocol as a story · 63 points
HN discussion"If one of the curl project members with git push rights would get her account hacked and her SSH key password brute-forced, a very skilled hacker could possibly sneak in something, short-term. Although my hopes are that as we review and comment each others’ code to a very high degree, that would be really hard." Nip this entire discussion in the bud; just use a deterministic build process for any binaries you relea…
Comment linking /blog/deterministic-builds.html
on “Curl’s backdoor threat”Submitted Continued Funding and Transparency as a story · 25 points
HN discussionI haven't studied it, but I believe ZCash https://z.cash/ is not designed to eliminate that record (that's what a blockchain is right?), but to encrypt it and then use zero-knowledge proofs to show the validity of the transactions. That seems like it might be the best of both worlds in some ways: laws can be enforced when it's genuinely important to do so (the record is there so presumably if you seize people's keys…
Comment linking /
on “Tell HN: Coinbase now requires physical address of recipient in crypto transfers”Submitted Zcash Counterfeiting Vulnerability Successfully Remediated as a story · 22 points
HN discussionThere's a pretty detailed proposal of a privacy-preserving L2 solution for Zcash, called BOLT ( https://z.cash/blog/bolt-private-payment-channels/ ). The original paper is at https://eprint.iacr.org/2016/701 , and there's a prototype implementation by J. Ayo Akinyele at https://github.com/ZcashFoundation/libbolt . Further development of that implementation is being funded by the Zcash Foundation ( https://github.com…
Comment linking /blog/bolt-private-payment-channels/
on “Richard Stallman: We Can Do Better Than Bitcoin”Submitted ZSL: Zk-Snarks for the Enterprise as a story · 21 points
HN discussionIf someone could show how a cryptocurrency with anonymous features can follow KYC/AML laws, I'm all ears. Zcash has done a lot of work on this. https://z.cash/compliance/
Comment linking /compliance/
on “Starting a crypto project”Submitted Zcash – Privacy technology for blockchains as a story · 8 points
HN discussionWhat are your thoughts on Zcash[1] (either the product OR the company behind it)? 1. https://z.cash/
Comment linking /
on “I Am Sam Altman, President of YC Group. AMA”Submitted Zcash (formerly Zerocash/Zerocoin), a new currency for the Internet as a story · 7 points
HN discussionTitle makes it sound like a bug is discovered. The 'trapdoor' is in the protocol by design. A lot of zero knowledge proof protocols have an initial setup phase in which values are created that need to be forgotten for the system to be secure. These values are sometimes know as 'toxic waste'. ZCash has a good write up on how this went in their zero-knowledge proof based system: https://z.cash/technology/paramgen The…
Comment linking /technology/paramgen
on “Researchers find trapdoor in SwissVote election system”Submitted Zcash announce faster zk-SNARKS: proving time 37 to 7 secs, memory 3 GB to 40 MB as a story · 5 points
HN discussionIn theory, cryptocurrencies like Zcash [1] should solve the issues with transaction privacy. However, enforcing taxation when using a totally private and anonymous currency disconnected from government control would be nontrivial if not impossible. Likely the reason why governments are so against them. [1] Zcash: https://z.cash/
Comment linking /
on “Why we should fear a cashless world”Submitted New Empirical Research into Zcash Privacy as a story · 4 points
HN discussionhttps://z.cash Zcash is the first open, permissionless cryptocurrency that can fully protect the privacy of transactions using zero-knowledge cryptography. The Zcash client is now available for download as a command-line tool for Linux.
Comment linking /
on “How to explain zero-knowledge protocols to your children (1998) [pdf]”Submitted Zcash Counterfeiting Vulnerability Successfully Remediated as a story · 3 points
HN discussion"Premined" is not strictly accurate. 1/10 of the mining reward will eventually go toward a wallet controlled by the developers. The rate of the incentive payments starts out high and decreases over time. [1] This is different from a premine or instamine, where the devs begin life with a stash of protocol tokens, which they then have a strong inclination to dump on the market. Zcash 10% vig is an improvement over ins…
Comment linking /blog/funding.html
on “ZCash Will Be a Truly Anonymous Blockchain-Based Currency”Submitted Zcash 2018 Security Audit Results Overview as a story · 3 points
HN discussion
