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  2. List of bitcoin companies - Wikipedia

    en.wikipedia.org/wiki/List_of_Bitcoin_companies

    bitcoin exchange [citation needed] Bitwala: 2015 Germany: Berlin: bitcoin debit card, international transfers, bitcoin wallet [2] Blockchain.com: 2011 Luxembourg: wallet provider [citation needed] Blockstream: 2014 United States: San Francisco: software [citation needed] BTC-e: 2011 Russia: bitcoin exchange Shut down by the United States ...

  3. Legality of cryptocurrency by country or territory - Wikipedia

    en.wikipedia.org/wiki/Legality_of_cryptocurrency...

    In early 2018 the People's Bank of China announced the State Administration of Foreign Exchange led by Pan Gongsheng would crack down on bitcoin mining. [102] [103] Many bitcoin mining operations in China had stopped operating by January 2018. [101] A complete ban on cryptocurrency trading and mining was put into effect on 24 September 2021. [104]

  4. Bitcoin - Wikipedia

    en.wikipedia.org/wiki/Bitcoin

    Unallocated input satoshis in the transaction become the transaction fee. [73] Losing a private key means losing access to the bitcoins, with no other proof of ownership accepted by the protocol. [25] For instance, in 2013, a user lost ₿7,500, valued at US$7.5 million, by accidentally discarding a hard drive with the private key. [74]

  5. Tether (cryptocurrency) - Wikipedia

    en.wikipedia.org/wiki/Tether_(cryptocurrency)

    Tether (often referred to by its currency codes, USD₮ and USDT, among others) is a cryptocurrency stablecoin launched by Tether Limited Inc. in 2014. [3] [4]As of August 1, 2024, Tether reported having $118.4 billion in reserves, including $5.3 billion in excess reserves.

  6. Bitcoin protocol - Wikipedia

    en.wikipedia.org/wiki/Bitcoin_protocol

    A diagram of a bitcoin transfer. The bitcoin protocol is the set of rules that govern the functioning of bitcoin.Its key components and principles are: a peer-to-peer decentralized network with no central oversight; the blockchain technology, a public ledger that records all bitcoin transactions; mining and proof of work, the process to create new bitcoins and verify transactions; and ...

  7. Cloud mining - Wikipedia

    en.wikipedia.org/wiki/Cloud_mining

    Cloud mining is the process of cryptocurrency mining utilizing a remote data center with shared processing power. [1] Cloud mining has been used by ransomware groups and scammers to launder cryptocurrency. [2] This type of cloud mining enables users to mine bitcoins or alternative cryptocurrencies without managing the hardware.

  8. Unspent transaction output - Wikipedia

    en.wikipedia.org/wiki/Unspent_transaction_output

    UTXOs constitute a chain of ownership depicted as a series of digital signatures dating back to the coin's inception, regardless of whether the coin was minted via mining, staking, or another procedure determined by the cryptocurrency protocol. [2] Prominent examples of cryptocurrencies adopting the UTXO model include Bitcoin and Cardano ...

  9. Binance - Wikipedia

    en.wikipedia.org/wiki/Binance

    Binance Holdings Ltd., branded Binance, is a global [8] company that operates the largest cryptocurrency exchange in terms of daily trading volume of cryptocurrencies.Binance was founded in 2017 by Changpeng Zhao, a developer who had previously created high-frequency trading software.