The emergence of bitcoin, leded ledger technology (DLTs) and smart contract platforms has sparked a new era of living research on consensus protocols. The latest developments in the Bitcoin-style Nakamoto consensus, PBFT-like consensus, random consensus and others represent progress in a fundamental consensus approach that has various trade-offs in the guarantees they can provide to users. Cerberus's progress in consensus parallelization was based on the Byzantine leadership's fault tolerance tolerance approach (BFT).
The BFT protocol for state machine replication (SMR) has a strong consistency advantage (different from availability), with a long history derived from the work of Lamport, Shostak, and others.
The main milestone in the practical BFT protocol has been achieved with PBFT. PBFT uses a two-step preparation and acceptance approval process. Nodes (or participants in consensus, for example, computers in decentralized networks) choose "leaders" from their ranks. The leader offers the team to broadcast it to another node. When 2f + 1 nodes (where f is the maximum number of Byzantine nodes wrong) confirm the validity of commands by responding with their signatures, the signatures are combined into a "quorum certificate" (QC) and sent to the node as proof.
The 2f +1 requirement ensures that double voting from the wrong node cannot win a majority. As soon as 2f + 1 nodes confirm and sign the proof, the order is considered "perfect" and final. PBFT provides the first practical implementation of a partially synchronous BFT protocol, but does not work with current scalability requests on open public networks or global cloud deployments.
Of particular concern for the deployment of this large network is the high message complexity required for any "change of appearance" or replacement of leaders, because PBFT requirements for QC 2f + 1 are proof of security before progress is made.
Subsequent BFT works, such as Tendermint, expand the situation in the context of large blockchain networks by reducing the cost of sending messages needed to see change.
Instead of demanding 2f + 1 CC, the new Leader simply "expands" the highest CC (using it as a basis for new proposals). By eliminating the significant overhead of sending messages, this opens the possibility that there are other nodes with higher QC. Therefore, a leader needs to wait for a certain maximum network latency before he can ensure he has the highest QC, preventing deadlock. This slows the network response by introducing fixed latency and hence limiting bandwidth to a fixed time window rather than the actual network speed.
Protocol
Recently, the HotStuff protocol introduced an important extension of the previous BFT approach. HotStuff maintains an optimistic response while keeping the complexity of sending messages low by adding a third stage between preparation and commits: pre-commit. The pre-commitment phase allows leaders to "change their minds" after choosing "in phase," which means that consensus can safely move on to new proposals and the network can wait longer for certain network latency.
Commit occurs immediately after the QC for initial commitment has been built successfully. Combined with threshold signatures, this provides an "optimistic response" and the complexity of linear messages even to see changes. We took advantage of many HotStuff extensions and related benefits when we built the secure Cerberus BFT protocol.
Model
Cerberus solves the state-tolerant fault state machine (SMR) distribution replication problem at many nodes. Cerberus builds on the consensus of the BFT style while maintaining two main properties of BFT:
1. Safety when out of sync, the ability to survive when in sync.
2. Preference for consistency based on availability (ie, security with liveness during the asynchronous period)
We also make the following general BFT assumptions in our basic model. While we make these assumptions to illustrate the simple form of the Cerberus model, some of these restrictions can be removed in practical implementation (in particular, a set of static nodes). We discuss several in the Implementation section of this document.
- Static, world-famous node set
- Partial synchronization (e.g. After some time of global stabilization there is an unknown limit where all messages enter)
- 2f + 1 node follows the protocol, where f is the number of Byzantine nodes (per shard in the case of Cerberus)
- An attacker who is computationally unable to violate standard cryptographic primitives
- Has a practical signature method for collecting sounds from nodes
- Communication between correct nodes is peer-to-peer, confirmed and reliable
In classic BFT, the client command log is ordered globally so that the correct node can approve the final condition. Performance improvements have traditionally been based on "vertical" scaling, or "pressing more orders". one pipe ".
In practice, applications usually do not require global ordering of all orders; they only need ordering orders that are interdependent. Cerberus needs an application layer that defines dependencies so that it can implement partial orders, only order orders are linked. The Cerberus fraction represents the dependency relationship between teams. Orders that do not share a partial ordering relationship also do not share fractions, and can be executed safely in parallel.
For more information about this project you can see the link below:
Децентрализованные финансы , часто называемые DeFi или открытыми счетами, намекают на денежные изменения в мировоззрении, обусловленные децентрализованными достижениями, особенно блокчейн-системами. От общих платёжных систем до роботизированных достижений и стабильных монет с привязкой к доллару, DeFi стал одним из самых динамичных сегментов в блокчейне, с широким спектром использования для дизайнеров, людей и организаций. Децентрализованные финансы (DeFi) - это разработка, в которой используются децентрализованные системы для преобразования старых бюджетных статей в недоверенные и простые соглашения, которые работают без посредников.
Цифровая валюта довольно часто является средством торговли. Это объясняется тем, что большинство криптографических форм денег - это денежные средства, которые, как ожидается, будут использоваться на определенной стадии или в процессе администрирования, так же, как приз / взнос, выплачиваемый лицам, поощряющим получение пособий на этой стадии. Для Биткойн эта администрация - помощь бирж Биткойн. Плата за обмен и вознаграждение за копание - это вознаграждение за одобрение работы экскаватора и добавление обменов в биткойн-записи. Для Radix это деньги - это Rad.
Основная ценность Rad - это использование сцены Radix. Наблюдая за нехваткой внутри каркаса, ценность Рад также можно сделать неудивительной; изящная координация против интереса, чтобы уменьшить непредсказуемость затрат. Делая оценку Rad неудивительной, она оборудована для превращения в приличный магазин значительных ценностей. Превратившись в приличный долгосрочный магазин значительных ценностей, он может превратиться в общий способ торговли. Превратившись в общий режим торговли, становится возможным использовать его в договоренностях для будущих платежей (например, обязательства / кредит). Получив практическое применение для оплаты обязательств, у него есть шанс превратиться в мировую наличность.
У Фонда Radix есть преданность делу и команда для передачи Децентрализованной Общественной Сети. Для Доказательства кола в дополнение к Церберу это подразумевает передачу системы, в которой открытая власть гибко управляет 67% доступной маркировки. Свидетельство о коле не влияет на способность Radix Foundation передавать прямую универсальность, однако оно значительно влияет на границы безопасности системы. Эта экономическая модель распространяет запрограммированную систему, в которой 67% открытого контроля достигается в течение первых 140 дней жизни Radix Public Network.
Токен Radix обновит пространство DeFi, включив ликвидность и улучшив доступ. Мы рады быть частью процедуры в качестве поставщика каркаса. Наша модель безопасного авторитета будет поддерживать группу Radix и их клиентов с токенового возраста, путем организации и безопасного хранения с этого момента. Медный обнесенный стеной сад (читай: https://medium.com/@radixdlt/radix-establishment заявляет, что сообщник erc20-token-with-copper-as-caretaker a33a984da52e ) позволит институциональным клиентам Radix быстро и безопасно обмениваться между всеми участниками основные продвинутые ресурсы торговли. Мы ожидаем создания более безопасного, быстрого и прогрессивного пространства DeFi с Radix.
Токены ERC20 являются одними из наиболее примечательных и обычно дают токены на блокчейне Ethereum. Radix - это система Proof of Stake, и предоставление токена ERC20 будет стимулировать работу надлежащим образом полностью распространенной системы маркировки перед отправкой сети Radix. Ожидается, что это расширит безопасность и децентрализацию сети Radix. Прибытие этого токена предназначено для того, чтобы Radix могла быстро включить свое новое соглашение в существующие структуры, например, сделки и кошельки, предшествующие отправке в основной сети. Маркер ERC20 поможет гарантировать, что открытая система Radix будет действительно децентрализованной учетной записью, имеющей место в сети.
Возможная судьба Radix выглядит обнадеживающе. Они настроились на своих местных жителей и передали. В результате их организации с Copper вы можете быть уверены, что окажетесь в надежных руках, когда они раскроют токен ERC20 осенью.
Токен RADIX (XRD) является невосстановимым служебным токеном. Предполагается, что RADIX имеет две основные возможности в RADIX PUBLIC NETWORK (Сеть): во-первых, он может использоваться для оплаты администраций в Сети, во-вторых, он может быть использован для защиты сети от нападения. Большинство действий в сети приводят к оплате, которая выплачивается в токенах RADIX. Токен RADIX предлагается заполнить как компонент, посредством которого клиенты платят за использование Сети.
Предполагается, что сеть должна быть защищена от нападения с помощью инструмента противодействия Сибил. Владельцы токенов могут решить ставить часть своих корректировок токена RADIX на узел, который они запускают, или они могут назначить сегмент своих символических корректировок узлу, управляемому другим человеком. Маркировка предназначена для того, чтобы за счет нападения на Сеть взойти за счет полной оценки ставок на токены RADIX. Чтобы заплатить держателям символов, решивших защитить Сеть, своей ставкой, Сеть должна иметь постоянный темп новых символических разрядов. Эти новые токены автоматически выплачиваются Сетью всем Узлам, управляющим Сетью, в зависимости от доли, которой они управляют.
Несмотря на автоматический новый символьный разряд, в исходном коде первичной сети, распространяемой Radix Foundation, планируется предоставить сумму токенов RADIX в 12 млрд. Ожидается, что эти токены RADIX будут автоматически подключены к сети и предназначены для естественной разрядки в течение 10 лет. Предполагается, что открытые токены могут быть разыграны.
20% всей гибкости XRD будут направлены в Фонд стабильных монет. Эти активы будут ТОЛЬКОбыть открытым, если есть возможность передать децентрализованную стабильную монету. Чтобы сделать эту устойчивую монету действительно децентрализованной, соглашение будет зависеть от резерва XRD в качестве рыночной системы корректировки для вспомогательного токена. Этот дополнительный токен будет доступен для покупки на законных основаниях в соответствии с соглашением в обмен на XRD, который будет добавлен в Стабильный Монетный Резерв.
Всякий раз, когда разряжается, это дало бы возможность выпуска стабильной монеты, спонсируемой преимуществом, которая не рассчитывает на децентрализацию ни для себя, ни для XRD. В любом случае, выбор выпустить такую монету не должен приниматься в любом случае в последующие едва ли какие-либо годы, и, если он никогда не будет использован, Фонд стабильных монет будет скопирован, чтобы навсегда исключить его изящно.
Decentralized finance, frequently called DeFi or open account alludes to the monetary change in outlook empowered by decentralized advancements, especially blockchain systems. From shared installment frameworks to robotized advances to USD-pegged stablecoins, DeFi has risen as one of the most dynamic segments in the blockchain space, with a scope of utilization cases for designers, people, and organizations. Decentralized Finance (DeFi) is the development that use decentralized systems to change old budgetary items into trustless and straightforward conventions that run without middle people.
A digital currency is quite often a vehicle of trade. This is on the grounds that most of cryptographic forms of money are the cash expected to utilize a particular stage or administration, just as the prize/installment made to the individuals who encourage benefits on that stage. For Bitcoin, this administration is the help of Bitcoin exchanges. The installment of an exchange expense and the digging reward is remuneration for the excavator's work approving and adding exchanges to the Bitcoin record. For Radix this is money is the Rad.
The main worth the Rad has is that of utilizing the Radix stage. By overseeing shortage inside the framework, the Rad worth can likewise be made unsurprising; coordinating gracefully against the interest to diminish the unpredictability of the cost. By making the Rad esteem unsurprising, it is equipped for turning into a decent store of significant worth. By turning into a decent long haul store of significant worth it has the chance to turn into an overall mode of trade. By turning into an overall mode of trade, it gets feasible to be utilized in understandings for future installments (for example obligation/credit). By getting practical to use to pay obligations in, it has the chance to turn into a world cash.
The Radix Foundation has a dedication and command to convey a Decentralized Public Network. For Proof of Stake in addition to Cerberus, this implies conveying a system on which the open powers over 67% of the accessible marking flexibly. Evidence of Stake doesn't influence the Radix Foundation's capacity to convey direct versatility, however it does considerably influence the security boundaries of the system. This Economic model spreads out a programmed system wherein 67% open control is reached inside the initial 140 days of the Radix Public Network's life.
The Radix token will upgrade the DeFi space by including liquidity and improving access. We are glad to be a piece of the procedure as a framework supplier. Our safe authority model will bolster the Radix group and their clients from token age, through arrangement, and safe stockpiling from there on. Copper's Walled Garden ( read : https://medium.com/@radixdlt/radix-establishment declares erc20-token-with-copper-as-caretaker accomplice a33a984da52e ) will empower Radix's institutional customers to exchange rapidly and safely between the entirety of the main advanced resource trades. We anticipate building a more secure, quicker, and progressively secure DeFi space with Radix.
ERC20 tokens are one of the most noteworthy and usually gave tokens on the Ethereum blockchain. Radix is a Proof of Stake system and giving an ERC20 token will encourage working of an appropriately completely disseminated marking system in front of the dispatch of the Radix mainnet. This is expected to expand the security and decentralization of the Radix mainnet. The arrival of this token is intended to permit Radix to rapidly incorporate their new convention into existing frameworks, for example, trades and wallets preceding the mainnet dispatch. The ERC20 token will help guarantee that the Radix open system will be a really decentralized account stage that has a place with the network.
The eventual fate of Radix looks encouraging. They tuned in to their locale individuals and conveyed. As a result of their organization with Copper, you can be certain you are in safe hands when they reveal the ERC20 token in the fall.
The RADIX token (XRD) is a non-redeemable Utility Token. RADIX is proposed to have two chief capacities on the RADIX PUBLIC NETWORK (the Network): first, it might be utilized to pay for administrations on the Network, second it might be utilized to make sure about the Network against assault. Most on-Network activities will bring about a charge that is payable in RADIX tokens. The RADIX token is proposed to fill in as the component whereby clients pay for utilization of the Network.
The Network is intended to be made sure about against assault by a Proof of Stake sybil counteraction instrument. Token holders can decide to Stake a part of their RADIX token adjusts to a Node they run, or they may assign a segment of their symbolic adjusts to a Node run by another person. Marking is intended to make the expense of assaulting the Network ascend in relation to the all out estimation of RADIX tokens Staked. To pay the symbolic holders that decide to protect the Network with their stake, the Network is intended to have a steady pace of new symbolic discharge. These new tokens are automatically paid by the Network to all Nodes running the Network, with respect to the stake they control.
Notwithstanding the automatic new symbolic discharge, a sum of 12Bn RADIX tokens are planned to be given in the source code of the primary Network distributed by the Radix Foundation. These RADIX tokens are expected to be automatically bolted to the Network and are intended to be naturally discharged over a time of 10 years. It is proposed that lone opened tokens can be Staked.
20% of the all out flexibly of XRD will be bolted for the Stable Coin Fund. These assets will ONLYbe opened if there is a choice to convey a decentralized stable coin. To make this steady coin genuinely decentralized, the convention would depend on a Reserve of XRD as a market based adjustment system for an auxiliary token. This optional token would be accessible for buy legitimately from the convention in return for XRD, which would be added to the Stable Coin Reserve.
Whenever discharged, this would give a way to the issuance of an advantage sponsored stable coin that doesn't settle on decentralization for either itself or the XRD. In any case, the choice to discharge such a coin isn't required to be taken for in any event the following hardly any years, and if never taken, the Stable Coin Fund would be copied to for all time expel it from gracefully.
The foundational principle of Blockchain, which Markaccy operates on, is a digital network that oversees the initiation of speedy and transparent Peer-to-Peer(P2P) transactions, via secure channels, with an aim of growing trust and independence between all end-users. Since “Satoshi Nakamoto” invented Blockchain Technology in 2009, Statist a puts the total use of Blockchain wallets in the world at 47 million people as at March 2020. This represents a meagre 0.0006% of the world’s population, and thus becomes presents a strong avenue for growth not just in terms of knowledge, but also in terms of adoption.
The possibilities, thus, are numerous: the opportunity of uniting the world through a transparent digital network that promotes clarity, trust and efficiency in the exchange of goods and services will create dimensional opportunities in all facet, opportunities that drive the digital revolution. It is because Markaccy aligns strongly with these general long-term prospects of the Blockchain that we look to be at the forefront of this powerful and unique agenda.
About Markaccy?
Markaccy is ushering in a New era of financial equality,transparency and fair business practices that create unique value for all end users. It achieves this by connecting users from diverse sectors on our blockchain platform to grow profitable relationships that cut out interruptions from agencies, intermediaries, discrepancies, needless errors and fraud.
The end result for the end users is a trust-based system that solves problems with speed and reliability and guarantees optimal use of scarce resources to achieve desired profitability.
1. Markaccy is geared towards a digital economy through blockchain technology.
2. Providing financial fairness, equality and privacy to our end users.
Markaccy MarketPlace
The Markaccy Marketplace is a Freelance Platform which prioritises the best interest of the buyers and sellers. Users of the Markaccy Marketplace can find a full spectrum of professional services with a wide range of methods of connecting buyers and sellers. We promote a flexible and honest environment by allowing users to set their own terms.
The Markaccy Marketplace offers substantially lower costs compared to our competitors. The markaccy marketplace will strictly function with the use of the MKCY token. Due to the benefits of this model, we set a transparent flat rate of only 5% for all transactions made on the platform.
1. Access to large market.
2. First rate service search algorithm.
3. Unique service page setup.
4. Prompt payment.
5. Minimal cost, charges & expenses.
5. Excellent 24/7 support system
Solution:
The Markaccy Services Platform Marketplace
The Markaccy Services Marketplace Platform will seamlessly bringing together all industries and provide uninhibited access to a plethora of professional services through real time, efficient, transparent and a simple ordering process with no hidden fees, transaction fees or commission fees.
The rate of companies and individuals turning towards online service marketplaces and free lancers to locate professional providers is unprecedented and on the rise. Regardless of an individuals or businesses strategy, they will always require external services to support their core processes.
The Markaccy Services Marketplace Platform will offer fair opportunities for all those directly involved in the outsourcing and providing of services, removing the current draw-backs and overheads which are currently associated.
Our goal is to facilitate the highest quality environment for all aspects for both the provider of and receiver of services by will prioritizing those directly involved. We believe in a transparent and fair approach by providing the correct tools, security, competitiveness and financial freedom for the buyers and sellers.
The Markaccy Services Platform Marketplace allows sellers and buyers to connect on a platform which covers the complete spectrum of professional services while significantly reducing costs and charges associated with the existing centralized online service platform marketplaces.
Markaccy Services Platform Marketplaces aims to elevate online freelance services by offering access to extensive range of sectors. Some of the core practical aspects which will differentiate us from existing platforms include:
1. Range of Professional Services
Access to a large market, targeted at having over 30 millions users, offering a wide range of professional services.
2. Offering Services
Sellers, both individuals and groups, will be able to setup and offer their services on their own unique page.
3. Seeking Services
Buyers will be able to post job listings seeking Sellers to send applications.
4. Set your own Terms
Both Sellers and Buyers will be able to set their own terms, costs and time frames to ensure a smooth process. Including a confirmation phase to ensure all parties are satisfied. If there are any issues along any stage, Markaccy support team will moderate to solve the problem.
5. Fast Turn Around
Following submission of work and acceptance from the buying party, tokens will be release within 24 hours.
6. Professional and Reliable Rating Systems
Our rating systems will ensure complete fairness and transparency. Our support team will be hands on, taking on board and handling any issue that arises.
7. Minimal Costs, Charges & Expenses
Our platform will only be charging a flat 5% of for all services bought and sold; other freelance platforms currently offer in excess of 20% including VAT and service charges. Increasing value of token, lowering circulating supply of Markaccy.
8. No Sign-up or On-Going Costs
Buyers and Sellers will have no sign-up costs or on-going fees of any kind.
9. Security, Privacy & Efficiency
The marketplace will only be functioning with the MKCY token, reducing a host of red tape and allowing for fast and efficient transactions to realise earned funds.
10. Excellent Hands-on 24/7 Support Systems
For both the buyers and sellers and removing a host of important issues such as threats of giving a bad ratings.
Benefits of the Markaccy Services Platform Marketplace
1. Streamlined, Safe, Cost-Effective and Secure Transactions through only the MKCY token
2. Users Maintain Control of all Financial Aspects
By strictly using the MKCY tokens for all transactions and arrangements directly taking away the costly associate with online service marketplaces.
3. Lower Prices & Higher Paid Service Providers
Most freelancing platforms charge high transaction fees and commissions. Our platform alleviates this issue by using MCKY tokens with no financial intermediaries involved. This means that users’ earnings are not subject to any form of cuts and we will only charge a low flat fee of 5% per transaction which will be pumped back into the Markaccy reserve to decrease circulation of the MCKY, ensure the platform remains strong and for more future Markaccy developments.
4. No Fees for All Users when using the Platform including Transaction Fees, Hidden Costs, Listing Fees, Conversion Fees, Subscription Costs and Add-on Fees
Since there are no financial intermediaries, our users will benefit from huge cost effectiveness. The only transaction costs will be the 5% transction fee which is substantially less than other services platform.
5. Financial Freedom & No Commitments
Users can withdraw their Markaccy tokens at any time and finances will no longer be tied up on the service platform. In the event of a dispute, users’ tokens will never be forced to stay on the platform in the form of credit.
6. Users Fully Define the Terms of their Services
Users fully dictate all aspects of services provided including timeframes, scope, milestones and targets as to ensure services meet standards and expectations.
7. Transparency
The Markaccy platform offers greater transparency for all users regarding their rights, obligations, responsibilities and they remain fully in control of all financial aspects. All users will have a clear understanding of their rights and responsibilities as well as who to turn to if something goes wrong.
8. Privacy & Security
Submitted data and token transactions are completely safe; blockchain technology takes away the ability for information to leak or to be sold to third parties.
9. Trust Building Tools: Peer Review & Rating System
Full transparent trust building tools for protecting both the sellers and the buyers. Greatly assisting in the prevention of fraud, ensuring a high quality of service, reliability as well as addressing intellectual property rights issues.
One of the biggest positive points of working on a platform that runs on Blockchain technology is that the payments will process very quickly. With payments for services being released within 24 hours, significantly faster than the current centralized service platform.
11. 24/7 Support Systems for Buyers & Sellers
Markaccy have a large dedicated team of support staff, moderators and administrators who will full assist all Users with any queries or issues 24 hours a day.
12. Access to Globally Available Jobs on a Flexible Basis
Sellers are able to post their list of services, apply for jobs posted by buyers as well as negotiate specific services with buyers.
13. Optimized Listings
Ability to see ratings, reviews and portfolios in one place and an efficient matching system to meet supply and demand.
ECOSYSTEMS
MARKACCY MARKETPLACE
The Markaccy MarketPlace is a freelance platform that allows buyers and sellers connect securely for the purpose of business transactions. The Markaccy token is used as the means of payment.
MARKACCY WALLET
Markaccy Wallet enables our end users to easily purchase, store, send and receive Crypto Currencies.
MAINNET
Markaccy Mainnet is our enhanced blockchain network capable of storing and advertising transactions in open distributed ledgers. It also supports component technologies that offer cross-functional solutions to diverse problems.
MARKACCY SELF MINING
Markaccy Automated self mining system allows users to earn a total 10% MKCY Token bonus annually by simply depositing and storing Markaccy in their wallet.
Token Distribution
Token Distribution Details
ROADMAP
Below you will find the key milestones Markaccy aims to meet over the next 3 years
2020
2020 Q1
Token Development
2020 Q2
Token Completion
2020 – Q1/Q2
Launch of Social Media & Communications
2020 Q2
Launch of Whitepaper
2020 Q2
Start of Pre-Sale
[Pre-Sale – 7M Tokens at $0.02 Cents – June 20th – Lasts 57 Days]
2020 Q2
Airdrop Rollout following Pre-Sale
2020 Q3
End of Pre-Sale
2020 Q3/Q4
Public Coin Launch (IEO)
2020 Q3/Q4
Market place Private Beta Testing
2021
Q4 2020 / Q1 2021
Launch on Exchange
Q4 2020 / Q1 2021
Launch of Markaccy Market Place
Q4 2020 / Q1 2021
Launch of Referral Program
2021 Q2 / Q3
Development of Wallet
ESTIMATED 2021 Q4
Development of Markaccy Exchange
Development following the launch of Markaccy wallet
ESTIMATED 2021 Q4
Self Mining Development
Development following the launch of Markaccy wallet
Development of Markaccy Mainnet
Development following the launch of Markaccy Exchange & Markaccy Self-Mining
Team Members
Festus Nwoko
Co-Founder
Damilola Hussain
Co-Founder
Celeste Paras
Advisor
Nnamdi Offiah
Advisor
Ifeanyi Collins
Web Application/ backend Developer
Clinton Chuzzy
UI/UX & Backend Developer
Chidinma C
Chief Marketing Officer
Hazel Olivar
Community Manager
Vu Anh
Vietnam community manager
Ryan Vickri
Indonesia community manager
Mahibul Islam
Bangladesh Community Manager
Merlyn Santos
Philipine Community Manager
To get more detailed information, please visit the link below:
