Zcash develops atomic trades between Zcash and Bitcoin

Atomic trades remove the need for a single point of trust for trades between different cryptocurrencies
12 September 2017   1365

Zcash team recently reported on the news about Atomic Trades development. 

We are excited to announce that we have been working on a command-line tool that executes atomic trades between Zcash t-addrs and Bitcoin addresses. Several people have come up with XCAT protocols. Loosely speaking, they all rely on a mechanism where for one side to obtain their coins, a secret must be revealed that will enable the second party to also redeem their coins. There are many variants of this basic idea.
 

Zcash team

The current version requires the user to run Bitcoin and Zcash full nodes, but a light-client version is in progress. 

What is Atomic Trades?

Cross-chain atomic trades (for which we have coined the acronym “XCATs”) remove the need for a single point of trust for trades between different cryptocurrencies. They rely on clever protocols that automatically exchange funds across two chains only if both participants hold up their end of the deal, and refund both participants otherwise. 

The problem of atomic cross-chain trading is one where (at least) two parties, Alice and Bob, own coins in separate cryptocurrencies, and want to exchange them without having to trust a third party (centralized exchange).

A non-atomic trivial solution would have Alice send her Bitcoins to Bob, and then have Bob send another cryptocurrency to Alice - but Bob has the option of going back on his end of the bargain and simply not following through with the protocol, ending up with both Bitcoins and the altcoin.

Change.org to Mine for Charity

According to the calculations, if 10k computers will run the minning screensaver for 12 hours a day, the charity fund will receive $10k monthly
18 July 2018   99

Social platform for petitions Change.org announced the launch of a screensaver that mines Monero on users' computers. All tokens will be transferred to the charity fund of Change.org. This is reported by Coindesk.

This initiative was launched in partnership with the marketing agency Tracelocke Brazil.

Representatives of Change.org report that the screensaver will consume resources only when users do not use the computer. According to their calculations, if 10 thousand computers will run the screensaver for 12 hours a day, the charity fund will be transferred $ 10 thousand monthly.

At the moment the program is available only for Windows users and the platform did not report on the release plans for the version for macOS.

Note that at the end of April, a similar action was launched by the Australian unit of the United Nations International Children's Emergency Fund; (UNICEF). The website "Page of Hope" mines Monero cryptocurrency.