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| March 23, 2019

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NLRB shouldn’t have subcontractors work on rule about subcontractors, Democrats say

March 14, 2019 |

Under President Trump, the National Labor Relations Board told its employees that tight budgets will require cuts to compensation and even downsizing, an agency union said. So it came as a surprise when the union learned the board wants to pay subcontractors to do work that employees traditionally…


L.A. Times – Business

Pete Buttigieg slams Pence for work with Trump, asks how he ‘became a cheerleader for the porn star presidency’

March 11, 2019 |

Pete Buttigieg, the little-known 37-year-old mayor of South Bend, Ind., said in an interview Sunday that Vice President Mike Pence has in effect become a “cheerleader for the porn star presidency” and questioned aloud when the former Indiana governor “stopped believing in scripture” and started to believe in Trump.
FOX News

Virgin Mary Work Is Only Surviving Leonardo Sculpture

March 10, 2019 |

A smile, a laugh, a few folds, and presto—you have the only existing sculpture by Leonardo da Vinci. That’s pretty much the takeaway after The Virgin with the Laughing Child was presented this week at an exhibition in Florence, NPR reports. An Italian academic and a Leonardo scholar from…
Newser

Kamala Harris calls for decriminalizing sex work, insists Trump is racist

February 27, 2019 |

Presidential candidate Sen. Kamala Harris, D-Calif., made some bold statements in an interview Tuesday calling for the decriminalization of sex work and also directly calling President Trump a racist.
FOX News

In Nigeria vote, armed vigilantes work to keep the peace

February 24, 2019 |

One by one the uniformed men carrying crude weapons and wearing traditional amulets materialized on the dark street in the northern Nigerian city of Yola.
FOX News

Everything you know about giving feedback at work could be wrong

February 22, 2019 |

Management guru Marcus Buckingham has a bone to pick with one of the prevailing trends in management wisdom — that companies need to get a lot better at giving tough, candid feedback, and need to do it a lot more often.

In a new article in the Harvard Business Review called “The Feedback Fallacy,”…


L.A. Times – Business

Trump: Leak of Work Schedule Was a Positive

February 11, 2019 |

President Trump says the leak of his daily schedules “should have been reported as a positive, not negative”—because it shows just how hard he is working. The leak showed that around 60% of Trump’s workday is unstructured “executive time,” but the president says that time involves hard work, USA…
Newser

Stacks Network Plans to Leverage BTC’s Proof of Work and Burn Bitcoins

February 3, 2019 |

Stacks Network Plans to Leverage BTC's Proof-of-Work and Burn Bitcoins

Blockchain startup Blockstack has revealed the company is in the midst of developing a new distributed ledger protocol called Stacks, a chain that leverages the hash power from the Bitcoin Core (BTC) network. Not only is the Stacks network secured by over 45 exahash of distributed hashrate, but its consensus algorithm also burns BTC by using a mechanism known as proof of burn (PoB).

Also read: Properties Are Still Being Sold for Cryptocurrency Despite the Bear Market

Proof of Burn

Blockstack, formerly called Onename, and Stacks lead developer Jude Nelson have published a video that describes a newly designed blockchain consensus algorithm. It utilizes Bitcoin Core’s proof of work (PoW), alongside the burning of coins (PoB) in order to process blocks on the Stacks chain. Nelson details there are inherent issues with proof-of-stake consensus models and the PoB consensus mechanism is meant to bootstrap itself from the established hash power stemming from the BTC chain. Over time, the Stacks chain will slowly transition away from BTC’s hash power, but using it initially will help curb 51% attacks that have been seen in recent months with networks that have an extremely low amount of PoW.

Stacks Network Plans to Leverage BTC's Proof-of-Work and Burn Bitcoins
Muneeb Ali and Ryan Shea founded Blockstack in 2013.

Nelson believes it would be better to build on top of the security of BTC rather than try to mimic that success.

“Instead of expending electrical and hardware costs, participants in proof-of-burn consensus do just that — They provably destroy (or “burn”) their own bitcoin as the economic cost for their participation,” explains Nelson’s recent video describing the Stacks chain. “Every participant competing for the opportunity to write the next block must burn a certain amount of proof-of-work token (bitcoin) to enter the competition.”

The Blockstack developer continued by stating:

A participant’s likelihood of winning the competition increases with the percentage of bitcoin they burn compared to other participants — The competition’s winner writes the block, collects transaction fees, and earns the block reward of Stacks tokens.

Stacks Network Plans to Leverage BTC's Proof-of-Work and Burn Bitcoins
Stacks won’t be the only chain that has used proof-of-burn (PoB), as Counterparty (XCP) is well known for initiating this process. The protocol that works with the Bitcoin Cash (BCH) chain Wormhole Cash (WHC) also uses a burning mechanism.

Building on Top of the Largest PoW Chain

Nelson’s blog post and recently published video also explains that the Stacks blockchain has its own memory-hard PoW process, but only 5 percent is allocated and the other 95 percent stems from BTC’s hash power. The process is tunable so that in future the Stacks developers can lessen the dependency on the BTC chain. “As the Stacks blockchain starts to get significant hash power there is a path available (by changing the tunable threshold) to reduce the percentage for Bitcoin and slowly transition away from it,” Nelson’s report notes.

Stacks Network Plans to Leverage BTC's Proof-of-Work and Burn Bitcoins
Figures from the Stacks token protocol whitepaper.

A Stacks block is found by using a mechanism called “cryptographic sortition” and each block with the burns from all participants is used to calculate a probability distribution at random. If a participant spends a lot of bitcoin during the burn process and doesn’t receive any incentive, the loss is similar to BTC miners using electricity and losing the block race, Nelson explains. “If you contribute 90% of all burns in an epoch, there’s still a 10% chance that you will lose (but your Bitcoin is destroyed either way,” the developer adds.

Nelson states further:

It’s worth noting though; the burns aren’t truly “wasted” — they still improve the chain quality since their (wasted) burns get used to calculate a “burn quota” which helps slow down attackers.

The Blockstack programmer says the firm is building the chain in this manner because they believe it would be “fruitless” to compete with the security of BTC. Rather the team decided to build on top of the largest PoW chain in order to create a more distributed and censorship-resistant web. Blockstack’s main intentions have always been working toward the decentralization of the internet. Nelson believes it’s even better when there’s a blockchain system that’s verified by individuals and organizations “acting out of rational economic self-interest.” In Hong Kong, Nelson detailed that Stacks version 2 is currently under development during his recent keynote discussion concerning the protocol. At the moment developers can review the two open SIPs or Stacks Improvement Proposals.

What do you think about Blockstack’s Stacks proof-of-burn consensus model? Let us know what you think about this project in the comments section below.


Image credits: Shutterstock, Blockstack, Pixabay, and the Blockstack white paper.


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The post Stacks Network Plans to Leverage BTC’s Proof of Work and Burn Bitcoins appeared first on Bitcoin News.

Bitcoin News

Furloughed federal workers are on the hook for work expenses they can’t get reimbursed

January 23, 2019 |

As if going without pay during the month-long partial government shutdown isn’t enough, thousands of federal workers are dealing with another financial indignity: servicing debt on government-issued credit cards.

They are receiving credit card bills — for which they are personally responsible —…


L.A. Times – Business

Striking LA Teachers Returning to Work

January 22, 2019 |

A tentative deal reached Tuesday between Los Angeles school officials and the teachers union will allow educators to return to classrooms after a six-day strike in the nation’s second-largest district, officials said. Los Angeles Mayor Eric Garcetti, accompanied by leaders of United Teachers Los Angeles and the Los Angeles Unified…
Newser