Dos Network

Dos Network

Created using Figma
Created using Figma
A Decentralized Oracle Service Network to Boost Blockchain Usability with Real World Data and Computation Power
  • Market
    Pair
    Price
    Volume 24H
    24H (price)
    24H (volume)
  • Coinsuper
    DOS/BTC 11 minutes ago
    $ 0.0154
    $ 87.10
    -13.98%
    -94.46%
  • Coinsuper
    DOS/ETH 11 minutes ago
    $ 0.0153
    $ 74.89
    -15.55%
    -96.66%
  • MXC
    DOS/USDT 34 minutes ago
    $ 0.0154
    $ 139.354 K
    3.07%
    8.93%
  • MXC
    DOS/ETH 34 minutes ago
    $ 0.0154
    $ 135.134 K
    4.53%
    5.48%
  • Binance DEX
    DOS/BNB 35 minutes ago
    $ 0.0144
    $ 6.146 K
    6.73%
    -60.83%
  • Bilaxy
    DOS/ETH 52 minutes ago
    $ 0.0139
    $ 4.947 K
    10.78%
    16.34%
  • BitMax
    DOS/BTC one hour ago
    $ 0.0155
    $ 217.351 K
    7.67%
    -1.78%
  • BitMax
    DOS/USDT one hour ago
    $ 0.0154
    $ 157.079 K
    1.73%
    -0.37%
  • Coinpark
    DOS/ETH 10 hours ago
    $ 0.0148
    -
    6.23%
    -100.00%
  • DDEX
    DOS/WETH 4 days ago
    $ 0.0134
    $ 122.23
    -
    -
  • BiteBTC
    DOS/BTC 3 months ago
    $ 0.0001
    -
    0.52%
    -
IEO
Mar 10, 2019
Mar 12, 2019
100% completed
$1 700 000
100% cap completed
Cap 1 700 000.00 USD
past
  • 1 DOS
    =
    0.012 USD
Token Details
Ticker
DOS
Accepted Currencies
ETH, BTMX
Company Details
Registered Country
United States
Additional Details
Categories
Platform, Network

About Dos Network

What is DOS Network?

 DOS Network is a chain-agnostic layer 2 decentralized oracle network that offers realtime data feeds and verifiable computation power to mainstream blockchains. It connects on-chain smart contracts and Ðapps with off-chain data sources and unlimited computation power, enabling smart contracts with more real world use cases.

What problems can DOS Network solve?

Besides the widely-discussed scalability problem, currently there are another two big issues hindering the widespread adoption of smart contracts and large-scale commercial Ðapps:

  • - Blockchain is a closed and deterministic system and the execution of a given smart contract in all validating nodes must reach a unanimous result, otherwise consensus is broken. This is an inherent limitation of blockchain consensus mechanism. Thus, smart contracts are not allowed to perform network I/O operations with off-chain world, they can only consume input from on-chain states and transaction data.
  • - There are a lot of on-chain resource limitations such as the expensive storage cost and computation constraint (gas limit, cpu time limit, etc.), preventing complex computing in smart contracts.

The mission and value of DOS Network is to solve these two problems to enrich smart contracts and decentralized economy with real world data and more computing power, paving the way for the mass adoption of blockchain.

What is the architecture of DOS Network?

The architecture of DOS Network is partitioned into two layers with several key components:

  • On-chain part: A set of system and governance contracts are to be deployed on supported blockchains, mainly including functionalities such as request handling and response/computation result verification, node registration and staking, stats monitoring, payment processing, etc. On-chain system contracts also provide a universal interface to developers and user contracts on all supported chains.
  • Off-chain part: A client software implementing the core protocol running by third party users (a.k.a node operators), constituting a layer 2 distributed network serving oracle requests. Client software includes several important modules: event monitoring and chain adaptor module, distributed randomness engine module, cryptography and off-chain group consensus module, request and/or computation task processing module depending on the type of oracle service the node operator provides.

How does DOS Network provide real world data to smart contracts?

It basically follows the request-response pattern. Through the on-chain SDK we develop, smart contract (developer) specifies the origin and format of the required data by making a message call (oracle request) into system contracts. The request is randomly dispatched to an off-chain worker group, inside which member nodes fetch from the specified data source and cryptographically reach off-chain consensus within the selected group. The proof along with the response data are sent back to the system contracts just in 1 transaction, triggering on-chain verification.

Unlike prediction market, DOS Network is able to connect any data/endpoint reachable in the Internet, the whole process happens automatically near real time and there is no human involvement at all.

How to ensure the returned data is untampered?

DOS Network applies Verifiable Random Function (VRF) and Threshold Cryptography to drive the secure, unpredictable and verifiable random group selection. Different oracle requests will be handled by randomly selected worker groups.

Threshold cryptography will then be applied in the worker group to collectively generate a proof to demonstrate data integrity. Finally, the proof along with the data will be sent back together to the system contracts within one transaction for on-chain verification - any malicious submitter will be detected and punished accordingly.

You can check our whitepaper for more technical details and mathematical proofs.

How fast is DOS Network?

The off-chain process is blazing fast and usually completes within less than 1 second, including event monitoring, request processing, data fetching and parsing, collective proof generation within group members, etc. That is to say, the performance bottleneck is often in the layer 1 blockchain side.

For Ethereum, the response is delivered in the next block (average block time ~14s) - the fastest one could achieve in theory. For other blockchains such as EOS (average block time ~0.5s) the delay will be much smaller.

Does DOS Network have tokens in the system? What role does it play?

Yes, DOS Network has its own network token. Here's what it is used for:

  • - Node operators deposit certain amount of tokens before joining the network to provide oracle services and earn fees and rewards. Malicious node operators will be detected and their stake will be forfeited as punishment.
  • - Oracle service requesters need to pay fees to node operators. Fees could be paid both in a pay-per-use pattern and subscription-based way. DOS token is one of the first accepted payment tokens, with stablecoins to be supported in near future.
  • - DOS token grants governance rights that node operators and token holders have right to vote for future accepted payment tokens and other proposals.
  • - In the long term, once premium data feeds and marketplace is integrated, requesters also need to pay fees to requested premium data providers.

How does the system defend against sybil attacks?

To prevent attackers from easily faking identities, node operators must deposit and lock network tokens in the system contract before joining the network and earning rewards. Verification is performed in the contract side, with malicious attackers failing verification process to be detected and punished. This makes sybil attacks expensive and nearly impossible and ties node operators' interests to the network and token values.

Who can run a node to join DOS Network? Why do they want to run a node?

DOS Network is a permissionless peer-to-peer distributed network. It is a layer 2 network that can support multiple mainstream blockchains. Anyone can run the client software to join the network and earn rewards after depositing certain amount of network tokens.

In order to quickly bootstrap the network and incentivize early node operators, in addition to the normal request processing fees, a PoS-like mining program will be started with 35% of total network tokens reserved as mining rewards. We'd like to distribute the majority percentage of tokens required to run a node to interesting and potential node operators. More information about fairer and wider token distribution as well as exact number of tokens and execution environment needed to run a DOS node will be released in future announcements. Moreover, node operators will be entitled to the governance and voting rights of the network and ecosystem.

Why is the node-selection mechanism based on randomness instead of reputation?

We see some oracles are based on reputation to choose service nodes - node with higher reputation often leads to a bigger probability of being selected. However, reputation based solution is susceptible to centralization, collusions and targeted attacks against high-score nodes. Moreover, it easily leads to the Matthew Effect, disincentivizing new node operators with same abilities to join the network, leading to the centralization spiral.

Thus we're replying on randomness to select oracle nodes. Randomness is specifically important in blockchains. For example, Proof-of-Work system achieves random block producer selection through the mining process. Verifiable Random Function (VRF) and Threshold Cryptography generate secure, unpreditable and verifiable randomness, keeping the DOS Network resistant to targeted attacks and node collusions, safe and fair for all node operators.

 

 

Features

  • Decentralized and Reliable

    A trustworthy decentralized solution without single point of failure.

  • Secure and Trustworthy

    Driven by Verifiable Random Engine and advanced cryptographic signatures.

  • Real-Time and Verifiable

    Near real-time request fulfillment and on-chain verifiable response.

  • Scalable at a Low Cost

    Data query throughput and computation capacity increase as more nodes join.

  • Compatible to Heterogeneous Blockchains

    Support multiple blockchains and enable cross-chain interactions.

  • Crypto Incentivized

    Dynamic network incentivized by honest participation rewards.

Dos Network Roadmap

  • 2018 Q1

  • Project Research
    Proof of Concepts
  • 2018 Q2

  • Whitepaper Draft and Improvement
    Core Protocol Prototype
  • 2018 Q3

  • Team Forming
    Development Kick off
  • 2018 Q4

  • Data Feed Oracle Alpha Release on Ethereum Testnet
  • Read More
  • 2019 Q1

  • Data Feed Oracle Beta Release on Ethereum Testnet
    Multichain Integration Initiation
  • 2019 Q2

  • Data Feed Oracle Launch on Ethereum Mainnet
    Premium data feeds and Data Marketplace Development
    Computation Oracle POC
  • 2019 Q3

  • Computation Oracle Demo on Ethereum Testnet
    Data Marketplace Integration with Etheruem Mainnet
  • 2019 Q4

  • Cross-chain Protocol Development
    Computation Oracle Release

Activity

Followers:
5 851
HIGH
Tweets:
199
MEDIUM
30 Days Growth:
88
Members:
10 812
VERY HIGH
30 Days Growth:
-625

Dos Network Materials

Dos Network Team

Verified 0%

Attention. There is a risk that unverified members are not actually members of the team

Siyuan Hua
Project Lead
unverified
Qi Wang
Operations Lead
unverified
Eric Nien
Tech Lead
unverified
Vipul Goyal
Chief Cryptographer
unverified
Xinrui Wu
Senior Blockchain Engineer
unverified
Lihui Wang
Senior Blockchain Engineer
unverified
Hongnan Liu
Blockchain Engineer
unverified
Xiaohu Sun
Operations & Business Development Manager
unverified
Yijie Weng
Marketing & Community Manager
unverified
Amber Wu
Operations & Digital Media Manager
unverified
Yijing Lin
Blockchain Engineer Intern
unverified

Advisors

Verified 0%

Attention. There is a risk that unverified members are not actually members of the team

Nathan Li
Advisor
unverified
Yi Tang
Advisor
unverified

Dos Network Last News

$ 0.0154
4.53%
Coin Stats
Daily, %:
4.53%
Weekly, %:
-27.27%
Monthly, %:
9.28%
Market Info
Market Cap:
$ 1.486 M
Volume 24h:
$ 660.645 K
Circ. Supply:
95.786 M DOS
Ticker:
DOS
ICO profit
X 1.29
ICO Price~$0.0120
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