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  2. Transaction malleability problem - Wikipedia

    en.wikipedia.org/wiki/Transaction_malleability...

    The transaction malleability problem became known to the Bitcoin community in 2011. In February 2014, Japanese Bitcoin exchange Mt. Gox revealed that they had been targeted by an exploit in Bitcoin protocol called "Transaction Malleability". At the time, Mt. Gox was the world's largest bitcoin exchange, handling approximately 70% of all bitcoin ...

  3. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    It confirms that each unit of value was transferred only once, solving the long-standing problem of double-spending. A blockchain has been described as a value-exchange protocol. [25] A blockchain can maintain title rights because, when properly set up to detail the exchange agreement, it provides a record that compels offer and acceptance ...

  4. Bitcoin scalability problem - Wikipedia

    en.wikipedia.org/wiki/Bitcoin_scalability_problem

    The Bitcoin scalability problem refers to the limited capability of the Bitcoin network to handle large amounts of transaction data on its platform in a short span of time. [1] It is related to the fact that records (known as blocks ) in the Bitcoin blockchain are limited in size and frequency.

  5. Proof of work - Wikipedia

    en.wikipedia.org/wiki/Proof_of_work

    Miners compete to solve crypto challenges on the bitcoin blockchain, and their solutions must be agreed upon by all nodes and reach consensus. The solutions are then used to validate transactions, add blocks and generate new bitcoins. Miners are rewarded for solving these puzzles and successfully adding new blocks.

  6. Stuart Haber - Wikipedia

    en.wikipedia.org/wiki/Stuart_Haber

    In 1995, Surety’s offering constituted the first commercial deployment of a blockchain and is currently the oldest continuously running blockchain. [ 6 ] In 2002, Haber joined HP Labs as a research scientist in the Princeton office, working there for 15 years on cryptography and security related problems.

  7. Environmental impact of bitcoin - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    [1] [5] Miners run dedicated software to compete against each other and be the first to solve the current 10 minute block, yielding them a reward in bitcoins. [6] A transition to the proof-of-stake protocol, which has better energy efficiency , has been described as a sustainable alternative to bitcoin's scheme and as a potential solution to ...

  8. Can Blockchain Solve Child Labor in the Cobalt Industry?

    www.aol.com/news/blockchain-solve-child-labor...

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  9. List of highest-funded crowdfunding projects - Wikipedia

    en.wikipedia.org/wiki/List_of_highest-funded...

    Cosmos aims to create a network of ledgers to solve long-standing problems in the cryptocurrency and blockchain communities. One of the most prominent use cases is decentralized exchanging from one currency to another. Currently this is largely done on centralized exchanges 38 TokenCard: Blockchain: Ethereum: May 3, 2017 — $16,516,286 ...