Tag Archives: privacy

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Understanding the Basics of Zero-Knowledge Proofs (ZKPs) Before Examining zk-STARKs and zk-SNARKs

Ethereum now has privacy thanks to zero-knowledge proof technologies, specifically zk-STARKs. But before we can assess zk-STARKs, it is important to define a zero-knowledge proof (ZKP).

Understanding the Basics of Zero-Knowledge Proofs (ZKPs)

A ZKP is a cryptographic technique that enables a prover to confirm another person’s assertion without disclosing any supporting data. zk-STARKs and zk-SNARKs are two of the most compelling zero-knowledge technologies available today, standing for zero-knowledge succinct non-interactive argument of knowledge and zero-knowledge scalable transparent argument of knowledge, respectively. These technologies allow one party to demonstrate their knowledge to another without actually revealing the knowledge, making them both scaling technologies, as they can enable faster proof verification, and privacy-enhancing technologies, as they reduce the amount of information shared between users.

zk-STARKs, specifically, enable users to communicate validated data or carry out computations with a third party without the other party knowing the data or results of the analysis. They are an advancement over zk-SNARKs because of their reduced algorithmic complexity, making them easier for even crypto experts to find mistakes in. These types of knowledge testing tools are primarily used to build highly private and secure systems that are decentralized and can only be accessed under specific, difficult-to-obtain conditions, such as those found in cryptocurrencies. These systems not only secure the network but also protect and anonymize users.

Comparing zk-SNARKs and zk-STARKs

There are a few main differences between zk-SNARKs and zk-STARKs. Firstly, zk-SNARKs require a reliable configuration phase, while zk-STARKs create verifiable computing systems without trust using publicly verifiable randomness. Secondly, zk-STARKs are more scalable in terms of speed and computational size when compared to zk-SNARKs. And thirdly, zk-SNARKs are vulnerable to attack by quantum computers, while zk-STARKs are currently immune. However, it is important to note that STARKs have larger proof sizes than SNARKs, meaning they take longer to verify and require more gas. In addition, the STARKs developer community is smaller and has less documentation compared to SNARKs.

Support from the Developer Community

Despite these differences, both the SNARKs and STARKs communities have support from developers. The Ethereum Foundation, in particular, has shown support for Starkware, a company using STARKs, by awarding them a $12 million grant. While documentation for STARKs is currently less comprehensive than that for SNARKs, the technical community has recently created more resources for those interested in the technology.

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Disney wants to the develop its private Blockchain

disney private blockchain bitcoin
The Walt Disney Company has announced its decision to develop a private blockchain.
Some days ago, in fact, the company published a job post for a “Disney Private Blockchain Intern” in Seattle, Washington within the Disney Technology Solutions and Services Business office
But the job post has now disappeared, so probably this means that the position has already been occupied.

The job proposal

These are the words of the original job post. 

“The Disney Private Blockchain team assists business segment users and developers research and develop software mechanisms to protect privacy in distributed ledger participation. DTSS Engineering Services (Keystone and DPBC) applications and services. We provide the support, consulting, and solutions to meet the tactical needs of our customer’s business”.

The main goal is security

So, the Disney Private Blockchain team will research and develop a software that aims at protecting privacy, but unfortunately Disney didn’t reveal more details about the blockchain network
We only know that the project is about designing and implementing an access control using blockchain technologies for Disney Corporate, ABC, ESPN, Disney Interactive and Walt Disney Productions.

More companies studying the blockchain

Recently we read about lots of important and worldwide companies who decided to invest in the blockchain and/or in bitcoins
Some examples are Visa, AirBnbPhilipsMicrosoft, Overstock, Hitachi and more. 

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Amelia Tomasicchio