Dear DREP users:
As the DREP pre-mainnet <Drep Planck> will be launched soon, the DREP team will start the DREP smart contract upgrade at 12:00 (UTC + 8) on September 6, 2019.
The new DREP contract address is: 0x22dE9912cd3D74953B1cd1F250B825133cC2C1b3 .
At that time, DREP users must cooperate to complete the following operations:
1. After the upgrade of the new DREP smart contract is completed, the DREP tokens of the old contract will become invalid. For specific upgrade time, please refer to the announcement of each exchange.
2. If during the upgrade of the DREP new contract, your old DREP tokens are stored in the official exchange, the new contract DREP tokens will be mapped by the exchange, you do not need to do anything to get the new contract DREP tokens .
3. If your old DREP tokens are stored in the ERC20 wallet, you can contact the official DREP customer service "DREP cute" or "DREP Nana" after the upgrade of the new contract to perform manual new contract DREP token exchange.
DREP Cute and WeChat: DREP_Foundation
DREP Nana WeChat: DREP_service
4. Exchanges that are now online with DREP will close the DREP deposit and withdrawal function. After completing the upgrade of new contracts, major exchanges will successively open the deposit and withdrawal function. For details, please wait for the official announcement of the exchange.
The source of evolution, Darwin (Darwin)
Breaking point, Riemann (Riemann)
Infinite Way, E uler (Euler)
Constant change, Planck (planck) ★
On September 23, 2019, the DREP pre-mainnet <DREP Planck> will be officially launched and open source, which means that the technical and ecological development of DREP has entered a new stage!
D · R · E · P are the four release versions of the DREP test network, representing the four key nodes in the development process of the DREP test network. Planck is the last test version before the DREP mainnet goes online. Compared with the previous test network, Planck is very versatile, and DREP will test it with the high standard of the mainnet. Once the test is passed, the DREP mainnet will be officially launched. The DREP development team will fully promote related development work in line with the principle of safety first.
The development progress of the pre- mainnet DREP Planck is as follows :
For enterprises and developers, we have optimized the test network performance and improved the developer's test efficiency; for users, we have improved the user experience and added the one-key mapping function of DREP mainnet tokens and DREP (ERC20) tokens; At the same time, the DREP development team has made great progress in products such as wallets, browsers, and official websites. The above will provide a solid foundation for the official launch of the DREP mainnet.
Technological progress
(1) Optimize test network performance
1. Improve the reading speed of the database. Separation of in-memory database and disk database improves the read speed of the database, the readability of the code is enhanced, and it is easier for developers to maintain.
Trie tree optimization diagram
2. Improve the data transmission speed between nodes. Increase the cache layer and add hashnode to improve the data transmission speed between nodes.
Add cache layer and hashnode
3. The synchronization speed of blocks between nodes is increased by 2 times. DREP test network 4.0 Planck realizes the synchronization of block data between nodes, and the speed of block data synchronization is increased by 2 times.
Block synchronization optimization diagram
(2) Improve development and testing efficiency
Provide Trace function for DREP developers. DREP test network 4.0 Planck adds Trace function, developers can monitor the running direction and data flow direction of internal commands in real time, and output to the log through the Trace interface. The software can analyze the specific process of the tracking program execution and accurately locate the BUG position.
(3) Supplement DREP public chain document description
1. Prepared detailed DREP public chain documents for DREP developers. The document describes how the DREP public chain works, including a full-node introduction to the basic functions of the chain, wallets, and history. Developers can learn about the technical configuration, working principle, parameters, transaction details and other common questions of the DREP public chain through the documentation.
2. Provide tutorials for DREP users. Including how to use the wallet, purchase DREP, participate in the governance of DREP, how to connect with the community and better contribute to the community.
(4) Improve user experience
1. Provide transaction data verification function for DREP light nodes. The DREP test network 4.0 Planck adds a receipt function. The DREP network light node can not only verify its own asset reception and expenditure information, but also verify the transaction information in the network, including: account balance, double payment judgment, etc.
2. Provide DREP users with transaction replacement function. DREP test network 4.0 Planck adds a new transaction replacement function. During the transaction process, if the user encounters a situation where the transaction is not packaged, the fee is low, or the transaction is executed incorrectly, the previous transaction can be replaced without initiating a new transaction.
3. Provide multi-chain wallets for DREP users. The DREP test network 4.0 Planck adds the address generator function. Users can use the private key and mnemonic generated by the DREP wallet to manage multiple main chain assets at the same time, including btc and eth. DREP Multi-Chain Wallet improves the user experience and lowers the user's threshold of use while ensuring the safety of user assets.
(5) Add token mapping function
Provide DREP users with one-key mapping function for main network tokens. DREP test network 4.0 Planck adds a one-key mapping function for mainnet tokens. After DREP is launched on the mainnet, DREP users can perform one-key mapping on the DREP official website. DREP (ERC20) participating in the exchange will be locked, and the total issuance and circulation will be locked. There will be no change.
Product progress
(1) Enrich DREP products and documents
1. The DREP native wallet DREP V1.0.0 is under development;
2. The Chinese version of DREP's new official website is completed;
3. The translation of DREP English, Korean, Russian official website copy is completed, and the development progress is 80%;
4. The prototype design of the digital currency recharge and withdrawal in the game is completed, and the development is in progress;
5. The blockchain browser cooperated with the testnet 4.0 joint debugging and optimization was completed.
(2) Complete the development of node wallet version V4.0.0
1. Realize the storage of account data;
2. Save the data of all blocks;
3. To directly verify transaction data locally.
Follow-up planning
Once the pre-mainnet DREP Planck is released, it means that DREP's technical and ecological development has entered a new stage, and the DREP development team will fully promote the mainnet online based on the principle of safety first. At the same time, the cross-chain, ID system deployment, privacy protection, reputation system functions, and game SDK applications of the DREP network are advancing synchronously according to the planning of the white paper.
The DREP Foundation will continue to strengthen cooperation with leading exchanges in the industry, well-known universities and media at home and abroad, and further expand the ecology of DREP, so stay tuned!
