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Double spend
| Глоссарий по криптовалютам и блокчейну |
- Double spend refers to a scenario, in the bitcoin network, where someone tries to send a bitcoin transaction to two different recipients at the same time. however, once a bitcoin transaction is confirmed, it makes it nearly impossible to double spend it. the more confirmations that a particular transaction has, the harder it becomes to double spend the bitcoins.
- A deliberate fork, where a user with a large amount of mining power sends a transaction to purchase some product, then after receiving the product creates another transaction sending the same coins to themselves. the attacker then creates a block, at the same level as the block containing the original transaction but containing the second transaction instead, and starts mining on the fork. if the attacker has more than 50% of all mining power, the double spend is guaranteed to succeed eventually at any block depth. below 50%, there is some probability of success, but it is usually only substantial at a depth up to about 2-5; for this reason, most cryptocurrency exchanges, gambling sites and financial services wait until six blocks have been produced ("six confirmations") before accepting a payment.
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Double, английский
- Snooker or british term for a kick or bank shot
- Двойной; дублированный
- Двойной
- Flemish bond a brickwork pattern
- L stair a platform stair with two intermediate landings, one near the top and one near the bottom, with a 90° change of direction at each landing. double-margin door a door having the appearance of a double door.
- Roman tile a roman tile having an additional roll up the center of the tile that matches (and is parallel to) the roll at its edges.
- A удвоенный (син. geminate) consonant, primary
- [1] to attack an enemy vessel from both sides simultaneously. [2] to sail around a headland, cape, or peninsula. [3] to overlap two sections of a mast or spar. [4] to cover a ship’s hull with extra planking when the original has loosened. [5] when dog 100 preceded by “on the” or “at the” a command to move at a running pace.
- A stand of two standard lengths of drill rods or drill pipe coupled together. also called
- Горе ~ двухканатная подвесная дорога
- See double trailer. double
Double, английский
Double (triple) concave hull shape, английский
Двояко (трояко) вогнутая форма корпуса
Double -, английский
- Двойной фальц
- Двупольная дверь
Double - cantilever gantry crane, английский
Double - circuit tower, английский
Double - curvature shell, английский
Double - deck bridge, английский
Double - fenetre, французский
Double - layer reinforcement, английский
Double acting, английский
Двойного действия
Double acting cylinder, английский
Гц двухстороннего действия см. также differential cylinder
Double action press, английский
Double addition, английский
Сложение с двойной точностью
Double address, английский
Двойная адресация double-address instruction двухадресная команда double-bit error ошибка в двух разрядах; двухбитовая ошибка
Double aging, английский
Double amplitude, английский
Двойная амплитуда
Double angle, английский
Two l-shaped metal structural members which are fastened together, back to back.
Double architrave, английский
An architrave, 1 having two decorative bands around an opening (such as a door or window in a wall of a building); usually the bands are in different planes, separated by an ornamental molding.
Double arcing, английский
Double auction market, английский
Systems by which listed securities are bought and sold through brokers on the securities exchanges, as distinguished from the otc market, where trades are negotiated. unlike the conventional auction with one auctioneer and many buyers, double auction markets consist of many sellers and many buyers.
Transaction, английский
- Любое событие в результате которого происходит изменение финансовой позиции организации в ходе её обычной работы. примером транзакции является осуществление покупки с помощью кредитной карты.
- (транзакция) соглашение между покупателем и продавцом, для продажи актива;
- Операция открытия/закрытия позиции.
- Экономическая операция (в снс; элементарный акт хозяйственной деятельности, совершаемый между хозяйственными единицами: производство, капиталовложения, потребление и др.; операции могут быть односторонними и двусторонними, капитальными и текущими, товарными и нетоварными, фактическими и условными, расчетными)
- A transaction is a digitally signed message authorizing some particular action associated with the blockchain. in a currency, the dominant transaction type is sending currency units or tokens to someone else; in other systems actions like registering domain names, making and fulfilling trade offers and entering into contracts are also valid transaction types.
- A data manipulation action processed by a database.
- A physical economic exchange action.
- A social economic exchange action.
- An event or condition that is recorded in asset, liability, expense, revenue, and/or equity accounts. sales to customers or purchases from vendors are examples of transactions.
- The pairing of two or more actions that are performed together as a single action; the action succeeds or fails as a whole.
- The posting or registration of a change on a document or a journal line.
- The delivery of a security by a seller and its acceptance by the buyer.
- Операция
- Language use to achieve ends rather than maintain social relationships.
- Information that entrance transfers to another computer system, either directly (via dll or other interface) or by saving it in a transfer file.
Impossible, английский
- A hateful word, generally supplanted among good seamen by “we`ll try.” a thing which is impossible in law, is pronounced to be all one with a thing impossible in nature.
- Admiral smyth calls this “a hateful word, generally supplanted among good seamen by ‘we’ll try.’” see difficulty.
Particular, английский
A частный; конкретный grammar partitioned a разделённый на части sequence 1 одна из базовых операций компьютерной обработки текстов; в каче- стве данных берутся текст либо сегмент текста, грамматика и цель разбора, а на выходе получается удовлетворяющее цели множество значений категориальной отнесённости сегментов в виде, например, дерева разбора. 2 применяется запоминание также и гипотез, выдвигаемых при разбо- ре, и результатов их проверки – м. кэй. 3 используется, в частности, для разбора арифметических выражений. partitioning n членение sentence ~ членение предложений (напр., при переводе )
Deliberate, английский
Themselves, английский
Containing, английский
Guaranteed, английский
- Гарантированный
- Гарантировано
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Genesis block, английский
- The very first block in a block chain.
- The very first block in the block chain
Distributed ledger, английский
Distributed ledgers are a type of database that are spread across multiple sites, countries or institutions. records are stored one after the other in a continuous ledger. distributed ledger data can be either "permissioned" or "unpermissioned" to control who can view it.
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