## ما هي فيثور توكن (VTHO)؟

فيثور توكن (VeThor) هي واحد من اثنين من الرموز المشفّرة المستخدمة على [سلسلة كتل](https://coinmarketcap.com/alexandria/glossary/blockchain) (VeChainThor). وقد تم إطلاق سلسلة فيتشين (VeChain) بداية في عام 2015، لكنها مرت بعملية إعادة تسمية شاملة في عام 2018. فبينما يمثل فيتشين (VET) الرمز المشفّر الأصلي للمنصة، يلعب رمز فيثور (VTHO) المشفّر دوراً أساسياً في الوظيفة العامة لسلسلة الكتل هو الآخر.

تمّ إنشاء رمز "فيثور" المشفّر وفق معيار (VIP-180)، وهو يمثل تكلفة استخدام سلسلة كتل فيتشين ثور (VeChainThor). والغرض الأساسي منه هو تسهيل العمليات والمعاملات على سلسلة الكتل، وبالتالي، فهو يعتبر أساس العقود الذكية على الشبكة.

### من هم مؤسسو فيثور توكن؟

[صني لو](https://twitter.com/sunshinelu24?lang=en) هو المؤسس والرئيس التنفيذي لـ "فيتشين" (VeChain). وهو يتمتع بمسيرة مهنية مرت بمنعطفات كبيرة. ففي عام 2009، تولى صني لو منصب مدير تكنولوجيا المعلومات في (Bacardi China). ولم يمض سوى عام واحد حتى غير اهتمامه كلياً إلى عالم الموضة، وأصبح المدير الفني لشركة (Louis Vuitton China). لكنه انتقل مرة أخرى، في عام 2014، إلى قطاع تكنولوجيا المعلومات في الشركة، ليصبح رئيس قسم المعلومات في القسم الصيني.

وبعد عام، في عام 2015، ولدت فكرة فيتشين (VeChain)، وأسس صني لو شركته الخاصة. في البداية، كانت فيتشين شركة تابعة لواحدة من أكبر الفاعلين في صناعة سلاسل الكتل في الصين — (Bitse). لكن لم يمض زمن طويل حتى انفصل صني لو عن (Bitse)، وأصبحت "فيتشين" (VeChain) مؤسسة مستقلة بذاتها. في عام 2018، مرت الشركة بعملية إعادة تسمية كبيرة، مما أدى إلى إنشاء سلسلة كتل (VeChainThor) ورمز فيثور (VeThor) المشفّر.

### ما الذي يميّز فيثور توكن؟

يعدّ رمز فيثور (VTHO) المشفّر فريد من نوعه لأنه رمز قائم على معيار (VIP-180). فبينما يعمل رمز فيتشين المشفّر (VET) كعملة أصلية لنقل القيمة، يمثّل فيثور (VTHO) جزء لا يتجزأ من عملية تشغيل سلسلة (VeChainThor). ويسمح تصميم سلسلة الكتل ثنائية الرموز المشفّرة للمتداولين بالمشاركة من خلال كلاهما، وبالتالي تنويع مشاركتهم في المشروع.

وتتميز سلسلة كتل "فيتشين ثور" بسرعات معالجة متزايدة، وتصميم مفتوح المصدر، فاتحة الباب أمام المطورين لتجميع جهودهم معاً. بالإضافة إلى ذلك، طورت "فيتشين ثور" ميزات المعاملات الوصفية التي تسمح للمشاركين بتنظيم المدفوعات متعددة الأطراف والمعاملات متعددة المهام. ويسمح هذا التنوع لمستخدمي المؤسسات من جميع المستويات بالاستفادة من قدرات سلسلة الكتل. بالإضافة إلى ذلك، تستفيد شبكة "فيتشين ثور" من تصميم الرمز المزدوج، حيث يتم تنفيذ المعاملات والعقود الذكية من خلال رمز فيثور (VTHO) المشفّر، والذي لا يرتبط مباشرة بالقيمة السوقية لرمز فيتشين المشفّر (VET).

#### صفحات ذات صلة:

اكتشف المزيد حول [Wabi](https://coinmarketcap.com/ar/currencies/wabi/).

ألق نظرة على [SUN](https://coinmarketcap.com/ar/currencies/sun/).

تعلَّم المزيد عن [جهاز إيثريوم الافتراضي (EVM)](https://coinmarketcap.com/alexandria/glossary/ethereum-virtual-machine-evm).

ألق نظرة على [مُدونة CoinMarketCap](https://coinmarketcap.com/alexandria/categories/blog).

### كم عدد عملات فيثور توكن (VTHO) الموجودة في التداول؟

ما يثير الاهتمام حول رمز فيثور المشفّر (VTHO) هو أنه مشتق مباشرة من رمز فيتشين المشفّر (VET). فمن أجل معالجة المعاملات على سلسلة كتل فيتشين، يتم إنشاء جزء من رمز فيثور المشفّر (VTHO) مقابل كل رمز فيتشين مشفّر (VET) تتم إضافته إلى الكتلة. بمعنى، أنه يتم إنشاء 0.00000005 من فيثور (VTHO) مقابل كل فيتشين (VET) على كل كتلة.

الحد الأقصى لإمدادات فيتشين (VET) هو 86,712,634,466 رمز مشفّر. منها حوالي 74% موجودة في التداول عند كتابة هذا التقرير، أو ما يقرب من 64,315,576,989. أمّا إمدادات فيثور (VTHO) فهي أقل بكثير عند 31,946,532,533 رمز مشفّر.

### كيف يتم تأمين شبكة فيثور توكن؟

تعتمد شبكة "فيتشين ثور" على آلية إجماع إثبات السلطة ([PoA](https://coinmarketcap.com/alexandria/glossary/proof-of-authority-poa))، والتي تسمح لها بالتحقق من صحة المعاملات بسرعة أكبر. ليس ذلك فحسب، بل إن أساس سلسلة الكتل يتأثر بشدة بجهاز إيثريوم الافتراضي ([EMV](https://coinmarketcap.com/alexandria/glossary/ethereum-virtual-machine-evm))، ويستخدم بعض المفاهيم الرئيسية التي تستخدمها سلسلة كتل إيثريوم. فشبكة "فيتشين ثور" ليست مبنية على سلسلة [إيثريوم](https://coinmarketcap.com/ar/currencies/ethereum/)، ولكن لديها سلسلة كتلها المنفصلة.

ويعتمد نموذج إجماع إثبات السلطة على موافقة العقد الرئيسية ذات السلطة (AM)، والتي يتم اختيارها من قبل مؤسسة فيتشين (VeChain). حيث يتعين على مشغلي العقد الرئيسية ذات السلطة الكشف عن هوياتهم وبناء سمعتهم قبل أن توافق عليهم مؤسسة (VeChain) كمصادقين على الشبكة. وكل من رموز فيتشين (VET)، وفيثور (VTHO) هي نوع خاصة من عملات معيار ([ERC-20](https://coinmarketcap.com/alexandria/glossary/erc-20))، مما يعني أنها متعددة الاستخدامات ويمكن تخزينها في عدد من محافظ العملات المشفرة الساخنة والباردة.

### أين يمكنك شراء رمز فيثور المشفّر (VTHO)؟

بينانس [Binance](https://coinmarketcap.com/ar/exchanges/binance/) هي المنصة الأكبر من حيث حجم تداول زوج (VTHO/USD). تليها كلّ من ([MXC.COM](https://coinmarketcap.com/ar/exchanges/mxc/))، و([Bitvavo](https://coinmarketcap.com/ar/exchanges/bitvavo/)). من المهم ملاحظة أن تداول العملات المشفرة يمكن أن يكون محفوفاً بالمخاطر، تماماً مثل أي نوع آخر من الاستثمار.

[اقرأ المزيد](https://coinmarketcap.com/how-to-buy-bitcoin/) حول تداول العملات المشفرة.

وفيما يلي بعض المقالات الأخرى، التي قد تهمك:

* [ما هو صنبور العملات المشفرة؟](https://coinmarketcap.com/alexandria/article/what-is-a-crypto-faucet)
* [ما هي بطاقات السحب المصرفية للعملات المشفرة؟](https://coinmarketcap.com/alexandria/article/what-are-crypto-debit-cards)
* [ما هو Web 3.0؟](https://coinmarketcap.com/alexandria/article/what-is-web-3-0)
* [ماذا تعني زراعة الغلال (Yield Farming)؟](https://coinmarketcap.com/alexandria/article/what-is-yield-farming)
* [ما هو إقراض العملات المشفرة؟](https://coinmarketcap.com/alexandria/article/what-is-crypto-lending)

VeThor Token

Atomic wallet

Welcome to VeThor Token's Community channel aggregated by CoinMarketCap.

VeChain

OceanEx Token

VeChainThor (VET) is a versatile enterprise-grade L1 smart contract platform whose origins began in 2015. VeChain is known as a pioneer of real-world enterprise applications, and built a distributed platform powered by Internet of Things (IoT) technologies, NFC chips and blockchain to help various industries solve data-related challenges.

VeChain solves major blockchain adoption hurdles. The platform uses an intelligent two token model, VET and VTHO, separating the protocol's Store of Value and gas fee payment mechanisms, ensuring costs can be kept low and stable. Fee delegation allows smart contracts to pay gas fees on behalf of business users, and an advanced transaction model allows data to be packaged more efficiently while ensuring finality of data.

VeChain is focused on delivering a wave of incentive-based sustainability dApps through its new platform, VeBetterDAO, working closely with Boston Consulting Group to achieve adoption across enterprise and individual users, and helping  onboard the next billion users to Web3 over the coming decade.

From supply chains to sustainability, VeChain has continuously demonstrated its leading role as a driver of blockchain in business, and is dedicated to its role as a pioneer of driving real world adoption of blockchain technology.

Holo is a peer-to-peer distributed platform for hosting decentralized applications built using Holochain, a framework for developing DApps that does not require the use of blockchain technology. The goal of Holo is to serve as a bridge between the broader internet and apps built using Holochain, offering an ecosystem and marketplace in which DApps are easily accessible, as they are hosted on the internet by Holo network participants.

The Holo network will be facilitated using a token called HoloFuel, which is actively being tested and will act as an accounting system to pay hosts for their services. In 2018, the project minted an ERC-20 token, HOT — also known as HoloToken — as an "IOU" that will be redeemable for HoloFuel upon launch.

Holo is still in development and is expected to launch for open alpha and beta testing by 2021.

Holo

Launched in 2017, Dent is a revolutionary digital mobile operator offering eSIM cards, mobile data plans, call minutes top-ups and a roaming-free experience. According to the company website, Dent employs blockchain technology’s powers to create a global marketplace for mobile data liberalization.

Dent has an ambitious roadmap ahead, with plans to expand its services to new markets by the end of 2021. The company has already attracted more than twenty-five million mobile device users, and Dent services are available in more than 140 countries. Enterprise partnerships for Dent include Samsung Blockchain, The Enterprise Ethereum Alliance and Telecom Infra.

Dent

Zilliqa is a public, permissionless blockchain that is designed to offer high throughput with the ability to complete thousands of transactions per second. It seeks to solve the issue of blockchain scalability and speed by employing sharding as a second-layer scaling solution. The platform is home to many decentralized applications, and as of October 2020, it also allows for staking and yield farming.

Development work officially started on Zilliqa in June 2017, and its testnet went live in March 2018. A little over a year later, in June 2019, the platform launched its mainnet.

The native utility token of Zilliqa, ZIL, is used to process transactions on the network and execute smart contracts.

Zilliqa

Harmony is a blockchain platform designed to facilitate the creation and use of decentralized applications (DApps). The network aims to innovate the way decentralized applications work by focusing on random state sharding, which allows creating blocks in seconds.

According to the project’s website, Harmony is expected to introduce cross-shard contracts and a cross-chain infrastructure by the end of 2021.

Harmony

Siacoin (SC) is the native utility token of Sia, a blockchain-based distributed, decentralized cloud storage platform. Sia acts as a secure, trustless marketplace for cloud storage in which users can lease access to their unused storage space. Agreements and transactions are enforced with smart contracts, and Siacoin is the medium of exchange for paying for storage on the network. The main goal of the project is to become the "backbone storage layer of the internet."

Sia was originally announced in May 2014 before being revised and re-announced a year later in May 2015. It officially launched in June 2015.

Siacoin

Algorand is a self-sustaining, decentralized, blockchain-based network that supports a wide range of applications. These systems are secure, scalable and efficient, all critical properties for effective applications in the real world. Algorand will support computations that require reliable performance guarantees to create new forms of trust.

The Algorand mainnet became live in June 2019, and was able to handle almost 1 million transactions per day as of December 2020. Algorand transaction metrics can be viewed here. Algorand initial coin offering (ICO) was held in June 2019, with the Algorand price of $0.24 per token.

Algorand

Stellar (XLM) is a peer-to-peer (P2P) decentralized network created in 2014 by The Stellar Development Foundation or Stellar.org. The network officially launched in 2015 with the purpose of connecting the world's financial systems and ensuring a protocol for payment providers and financial institutions. The platform is designed to move financial resources swiftly and reliably at minimal cost. Stellar links people, banks, payment processors and allows users to create, send and trade multiple types of crypto.

The basis of the network is its native digital currency - XLM or Lumens. XLM acts as an intermediate currency for operations and is also used to pay transaction fees. How it works: the protocol converts money in a few seconds, first into XLM, and then into the requested currency.

The Stellar payment protocol is based on distributed ledger technology -- an open-source development, community-owned and distributed by community. The crypto asset of the Stellar platform helps with cross-border transactions, overcoming the problems of high fees and slow procedures. XLM is more focused on assisting individuals transfer money than they are with institutions. Thus, Stellar offers access to financial systems, and people can send money at low cost and promptly around the world.

Moreover, Stellar serves as a decentralized exchange and marketplace, with a built-in order book that tracks ownership of Stellar assets. Platform users can manage buy/sell orders, as well as select and set their preferred assets in settlements. XLM is a built-in coin that helps reduce transaction fees.

The network maintains a high level of security.  XLM holders must have at least one token in order to remain active on the network. This nuance performs a global goal - the execution of network transactions efficiently and with minimal time costs. Plus, Lumens offers protection against flood attacks by making microtransactions too expensive for hackers with no chance of profit, which keeps Stellar Network safe from serious threats.

The target audience of Stellar is the inhabitants of developing countries, ordinary users who are provided access to the global economy through fast, simple and inexpensive transactions. Stellar Network makes extensive use of Lumens to produce live convection as well as to send cash in multiple currencies; currency is sent from one peer, and the recipient can receive the amount in another currency. This feature is beneficial when a transaction is made between currencies without widely traded pairs.

Support for multi-currency transactions is another competitive advantage of Stellar, and the ability for cross-currency transactions has only enhanced processes with foreign operations. Moreover, stable speed and low transaction costs are a privilege that users receive.

This functionality is powered by a development called Anchors (a bridge between different currencies and the network), which simplifies the exchange within the network and helps speed up the whole process.

In summary, the benefits of Stellar (XLM) include:

Stellar

Theta Fuel

DigiByte (DGB) is an open source blockchain and asset creation platform. Development began in October 2013 and the genesis block of its DGB token was mined in January 2014 as a fork of Bitcoin (BTC).

A longstanding public blockchain and cryptocurrency, DigiByte uses five different algorithms to improve security, and originally aimed to improve on the Bitcoin blockchain’s security, capacity and transaction speed.

DigiByte consists of three layers: a smart contract “App Store,” a public ledger and the core protocol featuring nodes communicating to relay transactions.

DigiByte

Nervos Network (CKB) is an open-source public blockchain ecosystem. Its goal is to create a peer-to-peer (P2P) crypto-economy network where users can access a wide range of provably secure blockchain services and capabilities.

The Nervos mainnet launched in November 2019 with a novel dual-layer architecture. There’s a base layer where the consensus mechanism operates and smart assets are stored, and a computation layer where transactions are processed.

The base layer, also known as the Common Knowledge Base, has its own cryptocurrency called CKByte (CKB). It uses the Proof-of-Work (PoW) consensus mechanism and drives the Nervos ecosystem. It is used to pay miners for keeping the network safe, managing network resources, and letting users store things on the network.

The Nervos Network allows developers to create decentralized applications (dApps) that can operate on various blockchain systems. Any of the network layers can be used to run both decentralized apps and smart contracts.

Nervos Network

Hedera is the most used, sustainable, enterprise-grade public network for the decentralized economy that allows individuals and businesses to create powerful decentralized applications (DApps).

It is designed to be a fairer, more efficient system that eliminates some of the limitations that older blockchain-based platforms face — such as slow performance and instability.

It was funded through an initial coin offering (ICO) in August 2018 and first launched open access to its mainnet just over a year later in September 2019. As part of the ICO, investors were able to purchase the platform’s native utility token (HBAR) at the lowest possible pricing.

The HBAR token has a dual role within the Hedera public network.

First and foremost, HBAR the fuel that powers Hedera services, such as smart contracts, file storage and regular transactions. Second, it's used to help secure the network, since HBAR users can stake their tokens to assist with maintaining the integrity of the platform.

Hedera (HBAR) is the native cryptocurrency of Hedera Hashgraph, a platform that is positioned as an alternative to traditional blockchain technology and aims to excel in speed, efficiency and security.

Older blockchains tend to use a consensus mechanism like proof-of-work (PoW) to validate transactions, while younger blockchains opted for proof-of-stake (PoS). The Hedera Hashgraph system has a structure that was created from scratch particularly for the project. Hedera is based on a PoS model that is believed to increase the efficiency of transaction verification in the network, provide a high level of security, and protect the network from hacker attacks. Its ecosystem has the underlying hashgraph consensus algorithm and the global enterprise governing body.

Hedera Hashgraph is a distributed ledger technology (DLT). According to the project website, Hedera differs from other blockchains because it uses a new consensus algorithm called hashgraph. It intends to process and execute transactions faster, eliminate delays, and smooth out the TPS (transactions per second) indicator. Hashgraph is claimed to be an upgrade in transaction speed, cost, and scalability.

Core network services by Hedera:

Consensus Service (HCS). With HCS, clients send messages to the network to negotiate consensus timestamping and order. In this case, the state is stored offline, and users can define privacy and access control.

Hedera Token Service (HTS). Thanks to HTS, token creation and management are available to customers. It supports built-in tokenization.

The goal of Hedera’s hashgraph is to increase the speed of transactions. Moreover, the network is also focused on high-volume operations: micropayments, data integrity and tokenization.

Like the EVM, the Hedera network maintains a virtual machine that writes smart contracts in the Solidity programming language. On top of that, Hedera offers a set of built-in KYC and AML checks.

From a technical point of view, Hedera is a form of distributed ledger technology. It is a hashgraph, or consensus algorithm, where users agree on the order in which transactions should be performed. However, Hedera is not exactly a blockchain. It has its own distinctiveness and works differently. With hashgraph, all transaction branches are merged, no block equivalent is thrown away, and each is used to reach consensus.

One of the most noticeable features of the network is the Gossip-about-Gossip protocol. According to Dr. Leemon Baird, Hedera's inventor, within the system nodes randomly transmit data about themselves to other nodes via hashgraph using the Gossip protocol. Soon, all nodes in a cluster become familiar with each other. Then a certain data structure is formed. It consists of a payload of transactions, a timestamp, a digital signature, and hashes to the previous structures.

HBAR is Hedera's native token that powers applications on the Hedera network. HBAR is utilized to pay for network services, transaction fees, in-app payments and micropayments. Developers can pay network fees with HBAR tokens, namely: work with smart contracts, file storage and currency exchange. HBAR is used to incentivize and pay network nodes.

Hedera Hashgraph has a decentralized governance system that is set apart. All critical decisions about pricing policy, software updates, and wealth management are made by the Governing Council.

Hedera

WINkLink

Amp is an open-source, decentralized protocol that provides collateral as a service. Amp is described as the new digital collateral token offering instant, verifiable assurances for any kind of value transfer. Using Amp, networks like Flexa can quickly and irreversibly secure transactions for a wide variety of asset-related use cases.

The project, which launched in 2020, aims to provide a fast, efficient, and secure transaction platform. It claims to solve a number of network problems, including slow confirmation times, price volatility and broad adoption.

Amp claims to offer a straightforward but versatile interface for verifiable collateralization through a system of collateral partitions and collateral managers.

Collateral partitions can be designated to collateralize any account, application, or even transaction, and carry balances which are directly verifiable on the Ethereum blockchain.

Collateral managers are smart contracts that can lock, release and redirect collateral in these partitions as needed in order to support value transfer activities.

Amp supports a wide variety of use cases for collateralization, and also introduces the concept of predefined partition strategies, which can enable special capabilities such as collateral models through which tokens can be staked without ever leaving their original address.

Founded in 2015, StormX is one of the first global cryptocurrency-based solutions to reach worldwide markets. As a mobile app and browser extension, StormX aims to bring users cashback in crypto for most of their online purchases. With enterprise partners like Samsung, Nike and Lego. StormX also allows users to stake the native STMX token to boost their rewards.

The company has already attracted investments from Blockfolio, Litecoin Foundation and Kyber Network. StormX has successfully developed its product and has become an industry leader in the crypto cashback community. The company is also catching users’ attention by offering cashback of up to 87.5% for some purchases.

StormX

IOTA is a distributed ledger technology (DLT) that features unique architecture and an open-source product suite for individuals, businesses, and institutions to use in Web3. It is built on a directed acyclic graph (DAG) called the Tangle, which can be pictured as a multi-dimensional blockchain. It enables the exchange of data and value on a decentralized platform through direct and secure transfers, executed on and immutably recorded on the network.

To learn more about this project, check out our deep dive into IOTA.

Together with its staging network Shimmer, IOTA aims to offer solutions to establish a secure and permissionless infrastructure that can drive the economy of the future. It enables the development of decentralized applications through automated trust in the form of Ethereum-compatible smart contracts, an advanced consensus algorithm, and thoughtfully balanced incentives.

IOTA delivers tools for creating and managing custom Layer 2 (EVM) chains, deploying smart contracts, minting native tokens and NFTs with distinctive features, and introducing digital identities to users.

Launching in 2024, IOTA 2.0 will be a protocol upgrade that rebuilds IOTA’s architecture to deliver full decentralization. You can find more about it here.

IOTA

Reserve Rights (RSR) is an ERC-20 token that will serve two main purposes for the Reserve Protocol: overcollateralization of Reserve stablecoins (RTokens) through staking and governing them through proposing & voting on changes to their configuration.

The Reserve Rights (RSR) token was launched in May 2019 following a successful initial exchange offering (IEO) on the Huobi Prime platform.

Reserve Rights

Chiliz is the leading digital currency for sports and entertainment by the eponymous Malta-based FinTech provider. It operates the blockchain-based sports entertainment platform Socios, which enables users to participate in the governance of their favorite sports brands. Multiple fan tokens by Socios.com are an example of that. For sports clubs and associations, fan tokens offer a way of connecting with their fans and unlocking new revenue streams.

For instance, fans can participate and influence club-related decisions through surveys and polls, such as messages the captain should wear on his armband. The company aims to bridge the gap between being an active and a passive fan. Chiliz has developed partnerships with some of the biggest sporting institutions in the world: FC Barcelona, Manchester City, Juventus Turin, and Paris Saint-Germain. It also boasts partnerships with the UFC and gaming organizations. By purchasing CHZ, fans get access to various fan tokens and literally have a stake in their club.

Chiliz

Verge is a privacy-focused cryptocurrency and blockchain that seeks to offer a fast, efficient, decentralized payments network that improves upon the original Bitcoin (BTC) blockchain. It includes additional privacy features including integrating the anonymity network Tor into its wallet, called vergePay, and providing the option of sending transactions to stealth addresses.

The project describes itself as community-driven, relying on volunteers and priding itself on being open source.

Verge was first launched in October 2014 as DogeCoinDark, a fork of Peercoin (PPC). In February 2016, it was renamed Verge in order to rebrand for easier mass-market adoption and to distinguish itself from Dogecoin (DOGE), with which it has no direct connection. The project is now based on the Bitcoin source code.

Verge

What Is Ankr (ANKR)?

Ankr is a decentralized blockchain infrastructure provider that operates an array of nodes globally distributed across over 50 Proof-of-Stake networks. This infrastructure helps drive the growth of the crypto economy while powering a full suite of multi-chain tools for Web3 users:

Ankr Build
Ankr provides comprehensive blockchain developer solutions, including traditional APIs, a decentralized multi-chain network of public RPC nodes used to access blockchain data and execute code, and tools like Ankr Scan to view on-chain information across blockchains.

Ankr Earn
Ankr Earn makes staking, liquid staking, and other yield-earning opportunities easy and accessible to any crypto investor. Ankr creates the most scalable and decentralized staking infrastructure solution that aims to solve the capital inefficiency of Proof-of-Stake networks and similar blockchain consensus mechanisms.

Ankr Learn
Through Ankr’s learning tools, tutorials, and docs, anyone can become a better user or developer of blockchain-based systems.