VeChain VeChain is an enterprise-focused blockchain ecosystem that is designed to enhance supply chain management aiming to connect blockchain technology to the rest of the world through a comprehensive governance structure and advanced IoT integration. VeChain enables manufacturers to assign products with unique identitifiers on the platform, thereby allowing participants to track the movement and provenance of products in a supply chain.
167
USD Coin USDC is a fully collateralized US dollar stablecoin. It is an Ethereum powered coin and is the brainchild of CENTRE, an open source project bootstrapped by contributions from Circle and Coinbase. USDCs are issued by regulated and licensed financial institutions that maintain full reserves of the equivalent fiat currency in a 1 USDC:1 USD ratio. Issuers are required to report their USD reserve holdings frequently, and Grant Thornton LLP issues reports on those holdings every month.
129
Ethereum Ethereum is a platform and a programming language that enables developers to build and publish the next generation of distributed applications.Ethereum can be used to program, disperse, guarantee and deal everything: voting, domain names, financial exchanges, public research, company management, contracts and most of the agreements, intellectual property, and intelligent assets that benefit from hardware integration.
118
libra An Introduction to Libra White Paper • From the Libra Association Members
111
Digitex Futures The DGTX token is the base currency of the Digitex Futures Exchange and all traders on the exchange must own DGTX to participate in our commission-free, non-custodial markets. Demand for DGTX from traders is an integral part of the revenue model that allows the exchange to operate sustainably with zero transaction fees on all trades. Instead of charging transaction fees on trades, the exchange covers costs by minting a small number of new DGTX tokens each year and selling them in well publicized and transparent token sales.
110
Lisk Lisk makes it easy for developers to build and deploy blockchain applications in JavaScript.
96
Bitcoin The concept of BitCoin was first proposed by satoshi nakamoto in 2009. Based on his ideas, he designed the released open-source software and constructed the P2P network on it.Is a P2P form of digital currency.Point-to-point transmission means a decentralized payment system. The biggest difference between bitcoin and other virtual currencies is that its total amount is very limited and extremely rare.The currency system had been limited to no more than 10.5 million in four years, after which the total number would be permanently capped at 21 million.
95
Conflux Chain Conflux is the State-of-the-Art public blockchain system that can achieve high TPS without sacrificing decentralization or safety. By delicately combining its unique and advanced algorithm with a novel structure——Tree Graph (TG), Conflux makes consensus no longer a performance bottleneck, thereupon solves a series of problems in the industrialization of public chains. Currently, in its first stage, Conflux adopts PoW (Proof of Work) mechanism as the basis of its consensus.
91
Cardano Cardano is a decentralised public blockchain and cryptocurrency project and is fully open source. Cardano is developing a smart contract platform which seeks to deliver more advanced features than any protocol previously developed. It is the first blockchain platform to evolve out of a scientific philosophy and a research-first driven approach. The development team consists of a large global collective of expert engineers and researchers
90
PIVX PIVX is a form of digital online money using blockchain technology that can be easily transferred all around the world in a blink of an eye with nearly non-existent transaction fees with market leading security & privacy.
87
Komodo Komodo is a privacy-centric cryptocurrency that combines the anonymity of ZCash and the security of bitcoin. Using a new consensus mechanism developed by the Komodo team, delayed work proves that Komodo blocks can be notarized using the bitcoin blockchain. Komodo USES zero-knowledge proof to provide 100 percent anonymous transactions, which are secured by bitcoin's computing power.
87
Stratis It offers simple and affordable end-to-end solutions for development, testing and deployment of native C# blockchain applications on the .Net framework.
86
Stellar Stellar is a platform that connects banks, payments systems, and people. Integrate to move money quickly, reliably, and at almost no cost.
85
IOTA IOTA is a permissionless distributed ledger for a new economy. By solving the inefficiencies of the Blockchain, IOTA, based on the revolutionary distributed ledger technology, the Tangle, is the missing link for the Internet of Everything and Web 3.0. Powering a secure, scalable and feeless transaction settlement layer, IOTA will empower machines and humans to participate in flourishing new permissionless economies - the most important one being the Machine Economy which we are building.
85
NEO NEO is a non-profit community-based block chain project. It is a distributed network that uses block chain technology and digital identity to digitize assets, uses intelligent contracts to automate the management of digital assets, and realizes "intelligent economy".
81
ZCoin With Zcoin, the anonymity set is on a dramatically higher magnitude. Instead of having an anonymity set limited to the few dozen, Zcoin has an anonymity set that encompasses all minted coins in a particular RSA accumulator that can scale to many thousands and unlike other solutions is not subject to transaction graph analysis.
80
Storj Storj is building a next-generation decentralized cloud storage network, set to launch in Alpha this fall. By renting unused hard drive and bandwidth capacity around the globe, rather than operating our own data center, we are able to offer more affordable object storage without sacrificing on performance or reliability.With an AWS S3 compatible interface, each file is encrypted, broken up into pieces and then distributed across the network. Only the data's owner has the keys to access their encrypted files, providing seamless security and privacy right out-of-the box.
79
RChain RChain is a new blockchain platform rooted in the formal model of parallel and decentralized computing. The RChain collaboration is taking advantage of this model to generate a concurrent, composite, and infinitely scalable blockchain by building software development correctly.
79
Skycoin The Skycoin Platform is the most advanced blockchain platform in the world. Developed by early contributors to both Bitcoin and Ethereum, Skycoin’s platform is completely secure, infinitely scalable, and ISP independent. Backed by bandwidth, storage, and computational power Skycoin is built to fulfill Satoshi’s original vision.
79
Ontology Ontology is a new high-performance public blockchain project & a distributed trust collaboration platform. Ontology provides new high-performance public blockchains that include a series of complete distributed ledgers and smart contract systems. Ontology blockchain framework supports public blockchain systems and is able to customize different public blockchains for different applications. Ontology supports collaboration amongst chain networks with its various protocol groups. Ontology will constantly provide common modules on the underlying infrastructure for different kinds of distributed scenarios, such as those for the distributed digital identity framework, distributed data exchange protocol, and so on. Based on specific scenario requirements, Ontology will continue to develop new common modules.
78
Bitcoin The concept of BitCoin was first proposed by satoshi nakamoto in 2009. Based on his ideas, he designed the released open-source software and constructed the P2P network on it.Is a P2P form of digital currency.Point-to-point transmission means a decentralized payment system. The biggest difference between bitcoin and other virtual currencies is that its total amount is very limited and extremely rare.The currency system had been limited to no more than 10.5 million in four years, after which the total number would be permanently capped at 21 million.
63,712,965,000
Ethereum Ethereum is a platform and a programming language that enables developers to build and publish the next generation of distributed applications.Ethereum can be used to program, disperse, guarantee and deal everything: voting, domain names, financial exchanges, public research, company management, contracts and most of the agreements, intellectual property, and intelligent assets that benefit from hardware integration.
21,588,963,300
XRP XRP Ledger is a real-time gross settlement system (RTGS), currency exchange and remittance network created by Ripple Labs Inc., a US based technology company. It is built upon a distributed open source internet protocol, consensus ledger and the decentralized native digital asset is known as XRP. Released in 2012, XRP Ledger purports to enable "secure, instantly and nearly free global financial transactions of any size with no chargebacks." It supports tokens representing fiat currency, cryptocurrency, commodity or any other unit of value such as frequent flier miles or mobile minutes. At its core, the XRP Ledger is based around a shared and public database or ledger, which uses a consensus process that allows for payments, exchanges and remittance in a distributed process.
18,155,321,300
Bitcoin Cash Bitcoin Cash brings sound money to the world, fulfilling the original promise of Bitcoin as "Peer-to-Peer Electronic Cash". Merchants and users are empowered with low fees and reliable confirmations. The future shines brightly with unrestricted growth, global adoption, permissionless innovation, and decentralized development.
7,477,582,300
EOS EOS is an operating system-like blockchain architecture platform led by blockchain wizard BM (Daniel Larimer), which aims to extend the performance of distributed applications. EOS provides account, authentication, database, asynchronous communication, and program scheduling on hundreds of CPU or clusters. The ultimate form of the technology is a blockchain architecture that can support millions of transactions per second, while ordinary users do not have to pay for the cost of use.
4,654,645,800
Stellar Stellar is a platform that connects banks, payments systems, and people. Integrate to move money quickly, reliably, and at almost no cost.
4,498,641,400
Litecoin Litecoin is a peer-to-peer Internet currency that enables instant, near-zero cost payments to anyone in the world. Litecoin is an open source, global payment network that is fully decentralized without any central authorities. Mathematics secures the network and empowers individuals to control their own finances. Litecoin features faster transaction confirmation times and improved storage efficiency than the leading math-based currency. With substantial industry support, trade volume and liquidity, Litecoin is a proven medium of commerce complementary to Bitcoin.
3,293,405,180
Tether Tether is a token backed by actual fiat currency assets, including USD, Euros and, soon, Japanese Yen. One Tether equals one underlying unit of the currency backing it, e.g., the U.S. Dollar, and is backed 100% by actual assets in the Tether platform’s reserve account. Being anchored or “tethered” to real world currency, Tether provides protection from the volatility of cryptocurrencies.
2,810,029,060
Cardano Cardano is a decentralised public blockchain and cryptocurrency project and is fully open source. Cardano is developing a smart contract platform which seeks to deliver more advanced features than any protocol previously developed. It is the first blockchain platform to evolve out of a scientific philosophy and a research-first driven approach. The development team consists of a large global collective of expert engineers and researchers
1,980,358,020
Monero Monero is cash for a connected world. It’s fast, private, and secure. With Monero, you are your own bank. You can spend safely, knowing that others cannot see your balances or track your activity.
1,871,305,220
Dash Dash is an open source peer-to-peer cryptocurrency with a strong focus on the payments industry. Dash offers a form of money that is portable, inexpensive, divisible and fast. It can be spent securely both online and in person with only minimal transaction fees. Based on the Bitcoin project, Dash aims to be the most user-friendly and scalable payments system in the world. In addition to Bitcoin’s feature set, Dash currently also offers instant transactions (InstantSend), private transactions (PrivateSend) and operates a self-governing and self-funding model that enables the Dash network to pay individuals and businesses for work that adds value to the network. This decentralized governance and budgeting system makes it one of the first ever successful decentralized autonomous organizations (DAO).
1,532,302,720
IOTA IOTA is a permissionless distributed ledger for a new economy. By solving the inefficiencies of the Blockchain, IOTA, based on the revolutionary distributed ledger technology, the Tangle, is the missing link for the Internet of Everything and Web 3.0. Powering a secure, scalable and feeless transaction settlement layer, IOTA will empower machines and humans to participate in flourishing new permissionless economies - the most important one being the Machine Economy which we are building.
1,485,074,050
TRON TRON is one of the largest blockchain-based operating systems in the world.TRON is an ambitious project dedicated to the establishment of a truly decentralized Internet and its infrastructure. The current TRON team radiates out from Beijing to Seoul, Tokyo, San Francisco and many other countries and regions, totaling more than 100 members. The technological backbones of TRON are experienced blockchain enthusiasts who were previously employed by internet giants such as Alibaba, Tencent and Baidu.
1,353,920,260
Bitcoin SV Bitcoin SV is the original Bitcoin. It restores the original Bitcoin protocol, will keep it stable, and allow it to massively scale. Bitcoin SV will maintain the vision set out by Satoshi Nakamoto’s white paper in 2008: Bitcoin: A Peer-to-Peer Electronic Cash System Reflecting its mission to fulfil the vision of Bitcoin, the project name represents the “Satoshi Vision” or SV. Created at the request of leading BSV mining enterprise CoinGeek and other miners, Bitcoin SV is intended to provide a clear choice for miners and allow businesses to build applications and websites on it reliably. Bitcoin SV restores the original vision to ignite the future of Bitcoin: Bitcoin, as restored in Bitcoin SV can replace every payment system in the world with a better user experience, a cheaper merchant cost, and a safer level of security. Businesses can trust the Bitcoin SV brand to provide the stability and scale they need to commit investment and resources to use the BSV blockchain.
1,135,238,140
NEO NEO is a non-profit community-based block chain project. It is a distributed network that uses block chain technology and digital identity to digitize assets, uses intelligent contracts to automate the management of digital assets, and realizes "intelligent economy".
1,133,769,730
Ethereum Classic Ethereum Classic is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. Ethereum Classic is a continuation of the original Ethereum blockchain - the classic version preserving untampered history; free from external interference and subjective tampering of transactions.
1,106,837,250
Binance Coin The BNB, formerly known as the BNC, is a kind of token issued by the Binance exchange based on the erc 20 standard token on the ethereum blockchain. The total amount of issue is constant at 200 million.
1,065,685,120
Tezos Tezos is a blockchain that can evolve by upgrading itself. Stakeholders vote on amendments to the protocol, including amendments to the voting procedure itself, to reach social consensus on proposals. Tezos supports smart contracts and offers a platform to build decentralized applications.
894,423,550
NEM NEM’s blockchain platform was designed and coded from the ground up for scale and speed. NEM’s permissioned private blockchain delivers industry-leading transaction rates for internal ledgers. And its revolutionary consensus mechanism and the Supernode program ensure that NEM’s open, public blockchain can grow without ever compromising throughput or stability.
841,706,820
Dogecoin Dogecoin is a decentralized, peer-to-peer digital currency that enables you to easily send money online. Think of it as "the internet currency."
664,252,800
libra An Introduction to Libra White Paper • From the Libra Association Members
89
Libra An Introduction to Libra White Paper • From the Libra Association Members
89
Namecoin Namecoin is an experimental open-source technology which improves decentralization, security, censorship resistance, privacy, and speed of certain components of the Internet infrastructure such as DNS and identities. For the technically minded, Namecoin is a key/value pair registration and transfer system based on the Bitcoin technology.
40
Dogecoin Dogecoin is a decentralized, peer-to-peer digital currency that enables you to easily send money online. Think of it as "the internet currency."
32
Bitcoin The concept of BitCoin was first proposed by satoshi nakamoto in 2009. Based on his ideas, he designed the released open-source software and constructed the P2P network on it.Is a P2P form of digital currency.Point-to-point transmission means a decentralized payment system. The biggest difference between bitcoin and other virtual currencies is that its total amount is very limited and extremely rare.The currency system had been limited to no more than 10.5 million in four years, after which the total number would be permanently capped at 21 million.
31
Bytom Bytom Blockchain Protocol (hereinafter referred as Bytom) is an interactive protocol of multiple byteassets. Heterogeneous byte-assets (indigenous digital currency, digital assets) that operate in different forms on the Bytom Blockchain and atomic assets (warrants, securities, dividends, bonds, intelligence information, forecasting information and other information that exist in the physical world) can be registered, exchanged, gambled and engaged in other more complicated and contract-based interoperations via Bytom.
26
Raiden Network Token The Raiden Network is an off-chain scaling solution, enabling near-instant, low-fee and scalable payments. It’s complementary to the Ethereum blockchain and works with any ERC20 compatible token. The Raiden project is work in progress. Its goal is to research state channel technology, define protocols and develop reference implementations.
24
PIVX PIVX is a form of digital online money using blockchain technology that can be easily transferred all around the world in a blink of an eye with nearly non-existent transaction fees with market leading security & privacy.
17
Conflux Chain Conflux is the State-of-the-Art public blockchain system that can achieve high TPS without sacrificing decentralization or safety. By delicately combining its unique and advanced algorithm with a novel structure——Tree Graph (TG), Conflux makes consensus no longer a performance bottleneck, thereupon solves a series of problems in the industrialization of public chains. Currently, in its first stage, Conflux adopts PoW (Proof of Work) mechanism as the basis of its consensus.
16
QuarkChain QuarkChain is a sharded blockchain protocol that employs a two-layer architecture - one extensible sharding layer consisting of multiple shard chains processing transactions and one root chain layer securing the network and coordinating cross-shard transactions among shard chains. The capacity of the network scales linearly as the number of shard chains increase while the root chain is always providing strong security guarantee regardless of the number of shards. QuarkChain testnet consistently hit 10,000+ TPS with 256 shards run by 50 clusters consisting of 6450 servers with each loadtest submitting 3,000,000 transactions to the network.
15
Algorand BORDERLESS ECONOMY. BOUNDLESS OPPORTUNITY. Algorand is defining the standard for blockchain technology
13
Nano Nano (NANO), formerly known as RailBlocks, is a low-latency, high performance cryptocurrency that is built upon a block-lattice data structure to allow for unlimited scalability and zero transaction fees. The Nano protocol can run on low-power hardware, making it practical for everyday use. Nano is also one of the first Directed Acyclic Graph (DAG) based cryptocurrencies. It achieves consensus via a balance-weighted vote on conflicting transactions to allow for quicker, more deterministic transactions while still maintaining a strong, decentralized system without the need for high-power mining hardware as each account each has an individual blockchain to eliminate access issues and the inefficiencies of a global data structure.
13
Santiment Network Token Santiment is for anyone who wants a clearer understanding of how cryptocurrency markets work. Use this platform to connect the dots when researching crowd psychology, sentiment and crypto market dynamics. See through the noise when valuating cryptocurrency assets. Make more informed investment decisions.
12
Monero Monero is cash for a connected world. It’s fast, private, and secure. With Monero, you are your own bank. You can spend safely, knowing that others cannot see your balances or track your activity.
11
Ubiq Ubiq is a decentralized platform which allows the creation and implementation of smart contracts and decentralized applications. Built upon an improved Ethereum codebase, the Ubiq blockchain acts as a large globally distributed ledger and supercomputer, allowing developers to create decentralized and automated solutions to thousands of tasks which today are carried out by third party intermediaries.
11
Status With Status your mobile device becomes a light client node on the Ethereum Network, enabling you to access Ethereum’s entire ecosystem from anywhere. Status is built together with its users. It is completely open source and anyone is free to contribute. Together, we're shaping the future of Status and creating a new type of network governed by its own users.
10
ChainLink The Chainlink network provides reliable tamper-proof inputs and outputs for complex smart contracts on any blockchain.
9
OmiseGO The OMG network is a scaling solution for finance on Ethereum, enabling transparent, peer-to-peer transactions in real-time. The decentralized network facilitates self-sovereign financial services across geographies, asset classes and applications.
9
Stellar Stellar is a platform that connects banks, payments systems, and people. Integrate to move money quickly, reliably, and at almost no cost.
7
Groestlcoin Groestlcoin is a fast and secure coin with almost ZERO fees, that is privacy oriented.
7
Ethereum Ethereum is a platform and a programming language that enables developers to build and publish the next generation of distributed applications.Ethereum can be used to program, disperse, guarantee and deal everything: voting, domain names, financial exchanges, public research, company management, contracts and most of the agreements, intellectual property, and intelligent assets that benefit from hardware integration.
Bitcoin The concept of BitCoin was first proposed by satoshi nakamoto in 2009. Based on his ideas, he designed the released open-source software and constructed the P2P network on it.Is a P2P form of digital currency.Point-to-point transmission means a decentralized payment system. The biggest difference between bitcoin and other virtual currencies is that its total amount is very limited and extremely rare.The currency system had been limited to no more than 10.5 million in four years, after which the total number would be permanently capped at 21 million.
Open TiandeBlockChain Blockchain connector standards include Peking University, Beijing University of Aeronautics and Astronautics, Tsinghua University, China software evaluation center of CCIDI Institute of industry and information technology, Ministry of industry and information technology, Qilu University of technology, national big data (Guizhou comprehensive test area), Zhongfu information, Shandong Internet Financial Engineering Technology Research Center, blockchain and Digital Economy Research Institute Blockchain is jointly developed by many institutions such as the international cooperation alliance for technological innovation in financial science and technology industry. The purpose is to provide a unified interface of blockchain, support the secondary development of users, and efficiently use the functions of blockchain, including storing user data in blockchain, querying the information required by users, multi-level index, the use of big data analysis technology, etc., so that users can quickly and efficiently obtain valuable query results.
XuperChain XuperChain, the first open source project of XuperChain Lab, introduces a highly flexible blockchain architecture with great transaction performance.
hyperledger Hyperledger Project is a new Collaborative Project at The Linux Foundation. The technical community is just getting started and will be adding code to the repository in the coming weeks. Check hyperledger.org for more information about joining the mailing lists and participating in the conversations.
Bancor Bancor allows you to convert between any two tokens on our network, with no counterparty, at an automatically calculated price. Thanks to built-in liquidity, the future of user-generated tokens is here. The bancor protocol uses a new standard for ERC20 tokens that allows smart contracts to connect to a liquidity network, enabling continuous on-chain liquidity throughout the network, without needing to match buyers and sellers.
GXChain GXChain (GXS) is a public blockchain that offers decentralized data exchange solutions, through its P2P decentralized data marketplace, to enterprises in the network loan, automobile finance, personal loan in internet finance and banking industry without caching personal data for customer privacy. The blockchain supports smart contracts, blockchain-as-a-service (BaaS), ID verification and KYC, multi-dimensional data, and swift login. It also has a GXB Dapp that can perform personal credit management and face-to-face credit verification.
FunFair FunFair provides blockchain-powered solutions with the potential to profoundly change the online gaming industry for both the operator and player. Using the latest Ethereum technology, we deliver low cost, high quality, transparent casino experiences that are provably fair.
TenX Pair your TenX Card and Wallet to spend your cryptocurrency anytime, anywhere. Their unique range of products allows you to bring together both fiat and crypto with the flexibility to choose from different payments methods. Spend at over 42 million points of acceptance online and offline, in almost 200 countries.
Status With Status your mobile device becomes a light client node on the Ethereum Network, enabling you to access Ethereum’s entire ecosystem from anywhere. Status is built together with its users. It is completely open source and anyone is free to contribute. Together, we're shaping the future of Status and creating a new type of network governed by its own users.
EOS EOS is an operating system-like blockchain architecture platform led by blockchain wizard BM (Daniel Larimer), which aims to extend the performance of distributed applications. EOS provides account, authentication, database, asynchronous communication, and program scheduling on hundreds of CPU or clusters. The ultimate form of the technology is a blockchain architecture that can support millions of transactions per second, while ordinary users do not have to pay for the cost of use.
Storj Storj is building a next-generation decentralized cloud storage network, set to launch in Alpha this fall. By renting unused hard drive and bandwidth capacity around the globe, rather than operating our own data center, we are able to offer more affordable object storage without sacrificing on performance or reliability.With an AWS S3 compatible interface, each file is encrypted, broken up into pieces and then distributed across the network. Only the data's owner has the keys to access their encrypted files, providing seamless security and privacy right out-of-the box.
MCO The MCO project, formerly known as Monaco, (referred throughout this document as “MCO” or “The Company”) started in June 2016 with the vision to put cryptocurrency in every wallet. MCO is building an outstanding and defensible platform to solve access and usability challenges in the blockchain industry, and power redefined financial services to improve our customers’ lives. The MCO platform includes the MCO Wallet App (to buy, exchange, send and track cryptocurrency) and the MCO Visa Card (to spend your cryptocurrency in the real world).
Wagerr Wagerr is a decentralized sportsbook that changes the way the world bets on sports. Wagerr uses distributed blockchain technology to execute betting contracts. It escrows stakes, verifies results, and pays out winners. By eliminating central authorities, Wagerr solves the most pernicious problems in the industry. Reducing corruption and risk results in predictable operation. You can bet on Wagerr.
Gas GAS is the fuel token, the original small ant coin (ANC), with a maximum cap of 100 million to achieve resource control for the use of the NEO network. The minimum unit of GAS is 0.00000001.
Populous Populous is a blockchain-based bill financial transaction system that uses XBRL data, credit Score and bankruptcy formula. It contains technologies such as Altman z-score, which can be used for in-depth credit risk analysis of potential target borrowers, including data of their affiliates and their clients.
Santiment Network Token Santiment is for anyone who wants a clearer understanding of how cryptocurrency markets work. Use this platform to connect the dots when researching crowd psychology, sentiment and crypto market dynamics. See through the noise when valuating cryptocurrency assets. Make more informed investment decisions.
OmiseGO The OMG network is a scaling solution for finance on Ethereum, enabling transparent, peer-to-peer transactions in real-time. The decentralized network facilitates self-sovereign financial services across geographies, asset classes and applications.
Civic Civic gives businesses and individuals the tools to control and protect identities. Civic enables people to take control and protect their identity. Through our decentralized architecture with the blockchain and biometrics on the mobile device, this platform provides multi-factor authentication without a username, password, third-party authenticator, or physical hardware token.
Ethos Ethos Universal Cryptocurrency Wallet brings it all together, and then some. We’re starting with digital assets, but we’re building a hybrid ecosystem that brings together digital and traditional assets in powerful new ways. A complete view of your financial future. Its vision is to create a people-powered new economy services company that makes the cryptocurrency market accessible and trustworthy to the average user, accelerating adoption of blockchain technology and democratizing ownership of both digital and traditional assets.