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Today 10 news :


  • Zero-knowledge/Arthur-Merlin Proof-of-Work for NP-like problems with coin flips hashes of recent transactions, par Mark S, 3 June 2017

    Saturday 3 June 2017 :: Stack Exchange alternative questions :: RSS
    On a previous answer to a question about making proof-of-work more useful, two challenges were provided:
    "1. The work must be much, much easier to verify than to do, and
    2. The work must in fact secure the transactions and not be severable from them. If I see that you sent me 10 Bitcoins and then billions of computations are piled on top of that, it must not be possible to remove that transaction and then pile those same computations on top of a conflicting transaction."
    To address these, has anyone considered a zero-knowledge / Arthur-Merlin proof of work (of some NP problem or co-NP problem, e.g.), with the public coin flips being the hash of the most recent blocks?
    After each new block is mined, a number of other random instances of the problem may be publicly announced. The instances could be created based on the hash of the block. Whoever solves (the most number of) outstanding problems is the winner for that block. She then uses the hash of that block as the coin flips for the validation of the proof-of-work.
    E.G. for graph non-isomorphism, every block that is solved spawns, say, 128 new graphs added to a pool. The first miner to find proofs of non-isomorphism for, say, the most number of the graphs in the pool wins.
    It's also a truism that most instances in NP may, in fact, be "easy." Depending on how instances are added to a pool, the instances that have been "in the pool" the longest are probably harder to solve, and may be worth more when finally mined. (An easy 3-SAT with 20 literals may be easier to solve than a hard 3-SAT with 5 literals right at the percolation point. The profit from mining may reflect that.)
    Engaging in more rounds of commitment, with more rounds of random coin flips based off of more blocks in the chain, may lead to more complicated problems being mined (e.g. IP=PSPACE.)
    A fraudster might try to buy Merlin/Peggy the miner's PoW form her, but as instances are spawned randomly, it might not do the fraudster much good. Also it’s a little harder to buy solutions to PSPACE or co-NP problems I think, without having to engage in actually finding the solution. Read more Mark S
  • Merge pull request #532 from jonasschnelli/master, par theuni, 3 June 2017

    Saturday 3 June 2017 :: Commits to gitian.sigs:master :: RSS
    Merge pull request #532 from jonasschnelli/master
    
    Add jonasschnellis 0.14.2rc1 non-code signed gitian signatures
    Read more theuni
  • Merge pull request #531 from Michagogo/master, par theuni, 3 June 2017

    Saturday 3 June 2017 :: Commits to gitian.sigs:master :: RSS
    Merge pull request #531 from Michagogo/master
    
    michagogo's gitian sigs for 0.14.2rc1
    Read more theuni
  • cfields 0.14.2rc1 unsigned, par theuni, 3 June 2017

    Saturday 3 June 2017 :: Commits to gitian.sigs:master :: RSS
    cfields 0.14.2rc1 unsigned
    Read more theuni
  • GOLD, SILVER or BITCOIN-CRYPTO CURRENCIES: Where Will The Big Money Be Made?, par brotherjohn, 3 June 2017

    Saturday 3 June 2017 :: Silver For The People - The Blog » bitcoin :: RSS
    srsroccoreport.com / BY  / JUNE 2, 2017
    When the Central Banks finally lose control of propping up the markets, will the BIG MONEY be made in owning gold, silver or crypto-currencies?  This is the question many investors who are focused on “alternative assets”, outside the typical mainstream stock, bond and real estate markets, are asking.
    Most investors who have been concerned about the massively inflated Bubble Markets and the Greatest Financial Ponzi Scheme in history, have been investing in gold and silver.  However, a new kid on the block, called Bitcoin and the other crypto-currencies, have gained a lot of attention due to the huge increase in their prices over the past few months.
    So, now many investors are wondering what to make of these extremely volatile crypto-currencies and if they are nothing more than purely speculative and gambling vehicles.  This is a logical assumption based on the massive spike in many of their crypto-currency values.
    READ MORE
    The post GOLD, SILVER or BITCOIN-CRYPTO CURRENCIES: Where Will The Big Money Be Made? appeared first on Silver For The People. Read more brotherjohn
  • Add jonasschnellis 0.14.2rc1 non-code signed gitian signatures, par jonasschnelli, 3 June 2017

    Saturday 3 June 2017 :: Commits to gitian.sigs:master :: RSS
    Add jonasschnellis 0.14.2rc1 non-code signed gitian signatures
    Read more jonasschnelli
  • Coinbase tipped at $1b valuation as demand for cryptocurrency soars, par Brittany A. Roston, 3 June 2017

    Saturday 3 June 2017 :: SlashGear » bitcoin :: RSS
    Coinbase, a Bitcoin exchange, is in talks for what could end up being the largest funding round ever for such a company, according to sources. The company is tipped in talks with possible investors for a funding round that may see Coinbase valued at more than one billion dollars, a new milestone for the cryptocurrency market if it proves true. … Continue reading Read more Brittany A. Roston
  • The Silent Economic Boom, par brotherjohn, 3 June 2017

    Saturday 3 June 2017 :: Silver For The People - The Blog » bitcoin :: RSS
    news.goldseek.com / By: Clif Droke / Friday, 2 June 2017
    [Note: I was recently interviewed by Kenneth Ameduri who hosts the Crush The Street internet show.  In it I discuss my take on gold, stocks, Trump, the economy and Bitcoin. The interview can be found here: https://crushthestreet.com/videos/live-interviews/economic-bubble-burst-trumps-watch-clif-droke-interview]
    Though many Americans aren’t feeling it, the economy is quietly gathering forward momentum.  With consumers gaining in confidence and real estate heating up on both the commercial and residential levels, the U.S. economy is much stronger than it may seem at first glance.
    One reflection of the strengthening economy is the equity market, which is in the eighth year of a bull market since the bottom of the credit crash.  The bromide, “As goes the stock market, so goes the economy,” is something that hardly needs explaining, yet so many investors lose sight of this cogent fact that it bears repeating.  Rising corporate profits and efficiencies in recent years have contributed in large part to the economic improvement.
    Another reflection of the recovery can be seen in our in-house New Economy Index (NEI), which combines the stock prices of the leading U.S. retail and business service stocks.  The graph below shows that NEI continues to hit all-time highs on almost a weekly basis and as such is reflecting a strong consumer retail economy.
    READ MORE
    The post The Silent Economic Boom appeared first on Silver For The People. Read more brotherjohn