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Pipe replacement by pipe bursting. Trenchless rehabilitation includes such construction methods as spiral wound lining, sliplining, thermoformed pipe, pipe bursting, shotcrete, gunite, cured-in-place pipe (CIPP), grout-in-place pipe, mechanical spot repair, and other methods for the repair, rehabilitation, or replacement of existing buried pipes and structures without excavation, or at least ...
Digital currency is a term that refers to a specific type of electronic currency with specific properties. Digital currency is also a term used to include the meta-group of sub-types of digital currency, the specific meaning can only be determined within the specific legal or contextual case.
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Another method is called the proof-of-stake scheme. Proof-of-stake is a method of securing a cryptocurrency network and achieving distributed consensus through requesting users to show ownership of a certain amount of currency. It is different from proof-of-work systems that run difficult hashing algorithms to validate electronic transactions.
The Internet currency Flooz was created in 1999. [6] The term "virtual currency" appears to have been coined around 2009, paralleling the development of digital currencies and social gaming. [7] Although the correct classification is "digital currency", the US government prefers and has uniformly adopted the term "virtual currency".
Basis was one example of a seigniorage-style coin. [10] TerraUSD (UST), created by Do Kwon, was meant to maintain a 1:1 peg with the United States dollar. [12] Instead of being backed by dollars, UST was designed to keep its peg through a complex system connected with another Terra network token, Terra (LUNA). [13]
For a blockchain transaction to be recognized, it must be appended to the blockchain. In the proof of stake blockchain, the appending entities are named minters or validators (in the proof of work blockchains this task is carried out by the miners); [2] in most protocols, the validators receive a reward for doing so. [3]
For example, if the replacement cost — not the amount that you paid for it originally, but the amount it would cost to replace it today — for your roof is $20,000, but the roof loses 5 percent ...