Website: https://ripaex.io/

Ripa Exchange is an crypto asset (fiat money or cryptocurrency or something) marketplace, follow-ing the latest industry standards and resting in the principles of “open source, secure and efficient”. Ripa Exchange aims to serve a platform for crypto-currency enthusiasts by providing a safe, secure, UI responsive, customizable and easy to use exchange that embraces open source principles and public trust.

Ripa Exchange is implemented with the Rails framework and other cutting-edge technologyand will be migrated to an hybrid-decentralized exchange where all exchanges in the Ripa networkwill share liquidity thanks to RLSP technology.

“Mission is to build the world best open source crypto asset marketplace witha high performance trading engine and safety which can be trusted and enjoyed by users. Additionally want to move the crypto currency exchange technology forward by providing support and add new features. Are helping people to build easy their own exchange around the world.”

The Ripa Blockchain

The RipaEx project will have its own blockchain called Ripa which will be run on the DPOS protocol and has the XPX token (P symbol) running on it that will serve the five following purposes:

1. to list new cryptocurrencies on Ripa Exchanges
2. to advertise new projects
3. to buy RipaEx gadget on the RipaEx Store
4. to pay for the sell of goods & services on authorized resellers with RipaEx POS (Point of Sale)
5. to share liquidity between Ripa Exchanges in the same network

Ripa (XPX orP ) is a cryptocurrency derivate from ARK, Lisk, Crypti and BitShares withunique differences and improvements for reaching the goal of shared liquidity between exchangesin the same Ripa network. This code however inherits the simplified interactions between ARK and other blockchain systems using DPoS as their consensus. This homogeneous codebase allows for the potential to provide service bridges in the form of ARK-Lisk blockchain apps, along with any other additional systems provided by their blockchain administrators.

RIPA BLOCKCHAIN IS AN ARK FORK AND THE USE OF A BLOCKCHAIN TECHNOLOGY FOR THE NETWORK OF EXCHANGES CREATED WILL COMPLETE THE RIPA ECOSYSTEM BY PERMITTING EACH EXCHANGE IN THE RIPA NETWORK TO SHARE THE SAME LIQUIDITY. WILL ALWAYS ENTRUST ARK AS BLOCKCHAIN TECHNOLOGY PROVIDER TO MERGE THEIR CODE INTO LATEST FEATURES FOR WHAT CONCERNING THE RIPA BLOCKCHAIN

Explained the use of the Ripa Blockchain in the RipaEx ecosystem and explained the RIPA - ARK technological relations what is following are the specifications of the Ripa Blockchain derived/inherited from ARK.

Delegated Proof of Stake Technology

Ripa Blockchain, will inherits the Delegated Proof of Stake (DPoS) consensus system that was first introduced by BitShares. This consensus algorithm was designed to eliminate the issues associated with Proof of Work (PoW), namely the centralization of computing power and the exponentially increasing waste of real world energy. While not completely decentralized as it relies on consensus by a fixed number of elected delegates, it guarantees a better decentralization than Bitcoin. The con-sensus algorithm implementation is improved over time, evolving into an optimal consensus system.

The technical description of the Ripa blockchain is as follow:

1. DPoS (Delegated Proof of Stake)
   – 101 active forging Delegates
   – Delegates selected by vote mechanism built into DPoS
   – 115,000,000 XPX - Seeded Genesis Block
2. Multi-signature accounts
3. Constant block reward
   – 2P per block
   – Inflation Rate (with 8s block times)
   – 6.31% for the first year
   – 5.93% the 2nd year
   – 4.02% the 10th year
   – 8-second block time
   – Decreased block time possible with future upgrades to the core.
   – 25 transactions per block
   – Increased via soft fork as needed.
4. Routing tables
5. SmartBridge data field for custom use and bridging blockchains (ARK Contract Execution Service)
6. Batch transactions
7. Custom transaction fees
8. Native smart contract execution

AS SAID RIPA BLOCKCHAIN IS AN ARK FORK AND WILL ENTRUST ARK AS BLOCKCHAIN TECHNOLOGY PROVIDER TO MERGE THEIR CODE INTO LATEST FEATURES FOR WHAT CONCERNING THEIPA BLOCKCHAIN, features like:

1. Scaling network up to the level of major Credit Card networks with core upgrades
   – Increasing the number of Forging Delegates
   – Increasing the Block Size to include more transactions
   – Implementation of pre-approval PBFT block concept testnet [codename: TwinChain]
   – Routing tables, to minimize hops among nodes when blocks are broadcast
   – Include forging with RIPA Uncles.

2. Two node types is used to secure the RIPA network:
   – Relay nodes - Nodes with full API functionality, acting as a back-end for the featurerich lite clients. Relay nodes do not collect any transaction fee and do not have the ability to Forge RIPA Blocks.
   – Forging nodes - Nodes with reduced API functionality, decreasing the exposure topotential DDoS attacks on the RIPA Platform. Forging nodes are able to Forge RIPAand receive transaction fees.

3. Official lite client for network access is be provided shortly before the mainnet launch including desktop clients (Windows, MacOS, and Linux) and mobile clients (Android and iOS).

4. OffLine wallet creation: the network itself does not use a Graphical User Interface by default. Any RIPA account can be created off-line and managed at no cost with a single device (computer, mobile phone, embedded ARM, IoT).

Hierarchical Deterministic (HD) Wallets (BIP32)

The structure of the public and private key generation follows the same specification as Bitcoin. A custom implementation of BIP32 for Hierarchical Deterministic Wallets is provided to RIPA users.

Fees

The fee for standard transactions is set atP 0.1 but the will be flexible in future releases of RipaBlockchain. At mainnet launch, a fee structure is provided out of the box to forging delegates withthe following rules:
– TransactionP 0.1
– VoteP 1 (101 votes per transaction)
– Second SignatureP 1
– Multi SignatureP 1 per signature +P 1 per signing account
– Registering a delegateP 25.
All fees are paid to the forging node which processes the block containing those fees.

Ripa Delegates and Delegate Voting

Any node running the core blockchain code wishing to become a forging node must register their account within the RIPA network. The fee for this registration is set to 25P per delegate account registered. RIPA incorporates a new DPoS voting system originally envisioned by the Crypti Founders. The RIPA system fee is 1P per delegate vote. The voting weight of each wallet will be split evenly between all delegates voted. For example:
– If a wallet votes for one delegate, that delegate receives 100% of the wallets voting weight.
– If that wallet votes for an additional delegate, the entire vote weight is split evenly between the two delegates at 50%.
– By adding a third delegate, the voting weight splits again, and each of the three delegates receives 33.333% of the voting weight from that wallet.

The 101 forging nodes with the highest number of votes are eligible to Forge RIPA blocks. This design eliminates the possibility that any single large RIPA holder or an organization holding large percentages of RIPA are able to gain control over the entire network by voting for all of their nodes into forging positions, thus effectively taking complete control over that DPoS Blockchain. Votes from XPX Tokens held by RIPA Crew may be used at RIPA Crew’s discretion.

Connecting Blockchains

ARK Bridged Blockchains (SmartBridge Technology)

The ARK Platform does not provide direct support for sidechains or dapp databases. Instead, a mechanism to bridge together blockchains is provided via a bridging function built into ARK Core where any blockchain can send and receive trigger function notices and informational data through the primary ARK network via custom developedSmartBridge(s)andEncoded Listeners

A.C.E.S. - ARK Contract Execution Service

ACES is a blockchain interoperability platform that provides simple protocols and tools for building a robust blockchain service marketplace.
ACES is composed mainly of the following three components:
– ListenersACES Listeners provide a way for all the different blockchain transaction eventsto be easily consumed via a common REST-ful API. The API allows consumers to create subscriptions and receive blockchain events in real-time using Webhook callbacks.
– ServicesACES Services create and execute Service Contracts, which can be anything from uploading a file to a storage blockchain, performing value transfers, creating smart contracts, executing code on blockchain based computing platforms, or interacting with IoT hardware.
– Marketplace ConsoleThe ACES Marketplace Console is a consumer dashboard for search-ing and executing service contracts listed on the Marketplace. ACES Service providers can list their service nodes using the Marketplace API.

Ripa Liquidity Service Provider (R.L.S.P)

Using the SmartBridge technology RipaEx will build a mechanism to share liquidity between all the exchanges in the Ripa network by writing the single exchange orderbook in the Ripa Blockchain and by executing order matching between all exchanges in the network.
In this way you can have the benefits of a decentralized orderbook (like liquidity) with thebenefits of a centralized exchange (like platinum customer support and FIAT exchange).

Ripa Community Fund

To permits the birth of new exchanges in the Ripa network a Ripa Community Fund - RCF - is created with the following characteristics:
– Starting Principal: the RCF will have a starting operating capital of 5% (5,750,000P ) of the genesis block
– Recurring Participation: each delegate will contribute to the RCF with 5% of its forged XPXs

To obtain funds from the RCF to start your own Ripa Exchange you will submit your proposal in the official RCF section in the Ripa forum at anytime after the first Ripa Exchange instance will be operational.

Token Sale

The RipaEx XPX token sale will be separated into two phases:
– PRESALE: that will run from April to June 2018
– RIPA TEC: that will run from July to December 2018

During the token sale the exchange rate for the XPX tokens will be P/€0.10.
The following cryptocurrencies are accepted:BTC, ETH, ARK, LISK.

Bonus for Investors and for new Users

For all investors in the RipaEx ICO will be givene1,000.00 credit in trading commissions in the first Ripa Exchange instance running, while a bonus of P 1,000.00 will be given to all new registered users during the RipaEx ICO to use at your own will.

XPX Ripa Token Distribution

115,000,000XPX tokens are seeded into the genesis block:

Division of Funds

XPX Token Economics

As explained in section4the Ripa Blockchain will have its own XPX token (P symbol) that will serve the following purposes:

1. to list new cryptocurrencies on Ripa Exchanges
2. to advertise new projects
3. to buy RipaEx gadget on RipaEx Store
4. to pay for the sell of goods & services on authorized resellers with RipaEx POS (Point of Sale)
5. to share liquidity between Ripa Exchanges in the same network

It is main purpose that the economy of the XPX token will stay healthy for all the duration of the RipaEx project for this reason will apply economic strategies to the token economy to make the price of the token rise constantly during all the duration of the project and beyond.

Roadmap

Links:

Website: https://ripaex.io/
Whitepaper: https://github.com/RipaEx/whitepaper/raw/master/eng/RipaEx_WP_EN.pdf
Facebook: https://www.facebook.com/ripaex
Telegram: https://t.me/ripaex
Twitter: https://twitter.com/ripaex
Bitcointalk ANN thread: https://bitcointalk.org/index.php?topic=3759172

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The bitcointalk name: mreretic
Profile links : https://bitcointalk.org/index.php?action=profile;u=1716487
Address: PPpNHHyxDQQYMjPRwRdWUmgJjfDGFAbA6r