Public keys as identities. This article began with the understanding that a secure ledger makes creating digital currency straightforward. Let's revisit this claim. When Alice wishes to pay Bob, she broadcasts the transaction to all bitcoin nodes. A transaction is simply a string: a statement encoding Alice's wish to pay Bob some value, signed by her. The eventual inclusion of this signed statement into the ledger by miners is what makes the transaction real. Note that this doesn't require Bob's participation in any way. But let's focus on what's not in the transaction: conspicuously absent are Alice and Bob's identities; instead, the transaction contains only their respective public keys. This is an important concept in bitcoin: public keys are the only kinds of identities in the system. Transactions transfer value from and to public keys, which are called addresses.Lighting can be used for smaller payments – the minimum is 0.00000001 BTC, or one Satoshi.bitcoin base bitcoin регистрация bitcoin скрипт withdraw bitcoin
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These days virtually all the methods available to buy bitcoin also offer the option to sell.
The exception is bitcoin ATMs – some do allow you to exchange bitcoin for cash, but not all. Coinatmradar will guide you to bitcoin ATMs in your area.
All exchanges allow you to sell as well as buy. What type of exchange you choose to sell your bitcoin will depend on what type of holder you are: small investor, institutional holder or trader?
Some platforms such as GDAX and Gemini are aimed more at large orders from institutional investors and traders.
Retail clients can sell bitcoin at exchanges such as Coinbase, Kraken, Bitstamp, Poloniex, etc. Each exchange has a different interface, and some offer related services such as secure storage. Some require verified identification for all trades, while others are more relaxed if small amounts are involved.
(Of course, don’t forget to declare any profit you make on the sale to your relevant tax authority!)
You can, if you wish, exchange your bitcoin for other cryptoassets rather than for cash. Some exchanges such as ShapeShift focus on this service, allowing you to swap between bitcoin and ether, litecoin, XRP, dash and several others.
Another alternative is the direct sale. You can register as a seller on platforms such as LocalBitcoins, BitQuick, Bittylicious and BitBargain, and interested parties will contact you if they like your price. Transactions are usually done via deposits or wires to your bank account, after which you are expected to transfer the agreed amount of bitcoin to the specified address.
Or, you can sell directly to friends and family once they have a bitcoin wallet set up. Just send the bitcoin, collect the cash or mobile payment, and have a celebratory drink together. (Note: it is generally not a good idea to meet up with strangers to exchange bitcoin for cash in person. Be safe.)
(Note: specific businesses mentioned here are not the only options available, and should not be taken as a recommendation.)
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