Need a Dapp based on ethereum

My project is about building an online review system using ethereum blockchain ( so that reviews are immutable). Also, reviews need to be filtered to detect the spam or fraud reviews & has to be stored in the blockchain.

User who provide the reviews must be autheticated.

Taidot: Blockchain, Ethereum, Javascript, JSON

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Tietoa työnantajasta:
( 0 arvostelua ) United States

Projektin tunnus: #17571002

Myönnetty käyttäjälle:


Hi! How are you doing? I'm happy to bid on this interesting project. I've been working on Ethereum for 3 years and have a solid understanding of it. Web3, Solidity, Truffle are my favorite toys. :) I can provide Lisää

$666 USD 20 päivässä
(29 Arvostelua)

21 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


Dear client we have currently 20 projects running with us on different concept in blockchain ,Crypto exchange website ,wallet system ,token exchange ICO, .please check the Demo. we are much ware about all the fu Lisää

$555 USD 10 päivässä
(5 arvostelua)

Hi Employer, Greetings of the day ! On reviewing your requirement, Its good to see that you are looking for decentralized application based on Ethereum blockchain for online review system where scam reviews are d Lisää

$3333 USD 40 päivässä
(24 arvostelua)

Hello sir ,we have done the similar work before , we have experience of ICO development , white paper, road map , lending , wallets creating the tokens based on ETH ERC20, Private block chain based on the open-source p Lisää

$555 USD 10 päivässä
(7 arvostelua)

HI, I am an expert in blockchain technology with c++ and solidity programming. I have developed many altcoins and ETH smart contract with ERC 20, many crypto to crypto exchange protal also. I can compile all c Lisää

$555 USD 10 päivässä
(4 arvostelua)

Hi,dear. I understand your proposals and I am very interested in this job - 'Need a Dapp based on ethereum'. I am senior software developer and I am able to perform this task in timely manner. Blockchain, Ethereum, J Lisää

$555 USD 4 päivässä
(8 arvostelua)
$500 USD 10 päivässä
(5 arvostelua)

Hi, I'm an Ethereum Developer, I have created a document verification prototype that you test it in this link using metamask on ropsten network : [login to view URL] I can custom this dapp for you Lisää

$250 USD 2 päivässä
(2 arvostelua)

Hi, Hope you are doing great. I will develop online review system using ethereum blockchain. Kindly check: Cryptocoin and wallet development work by me: [login to view URL] [login to view URL] [login to view URL] h Lisää

$722 USD 30 päivässä
(5 arvostelua)

Respected Sir/Madam, Greetings ! I'm [login to view URL] and I represent Vowelsin. I introduce myself as Business Development Manager working for my Organisation. We are in the market since 4years prov Lisää

$555 USD 10 päivässä
(0 arvostelua)

From Blockchain Expert! Dear client! I have a rich experience in this field! Seems to be an interesting work and good opportunity to show my skills to work with you in future as well. Hope to have a long-term wo Lisää

$1000 USD 7 päivässä
(15 arvostelua)

Dear Sir, Greeting from my side, Please accept my proposal for the job of Dapp based on ethereum I would like to apply for this job, and we will make it as per your requirement, as described in your Job details. Lisää

$3333 USD 21 päivässä
(0 arvostelua)
$555 USD 10 päivässä
(1 arvostelu)

Dear Prospect Hiring Manager. Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned I am a Fu Lisää

$555 USD 10 päivässä
(1 arvostelu)

Hello, will bring your Etherium based dapp. I have built half a dozen dapps. The smart contract will have the book review logic that you want. Will also build any marketing pages if you want (included in this price). P Lisää

$250 USD 4 päivässä
(0 arvostelua)

Hello , I am a blockchain developer and an architect rich experience with blockchain (both public and private), Ethereum, Bitcoin, smart contracts, ICO, tokens. I have successfully completed many projects for Lisää

$250 USD 5 päivässä
(0 arvostelua)

Deep understanding of Ethereum, Solidity, [login to view URL] and best practices to prevent data overflows/underflows and/or other security vulnerabilities. Fluent in written/spoken English. CV: [login to view URL] Lisää

$2000 USD 20 päivässä
(0 arvostelua)

Hi, I was going through your project specs and I have some questions to ask you. Are you available to have a quick chat now? We are currently on a project which has an implementation of BlockChain Technology Lisää

$33333 USD 75 päivässä
(1 arvostelu)

Hi I have gone through your project description. I am confident to build this project. I shall complete all your described functionalities in the relevant time frame. Here are my previous Bitcoin projects: https Lisää

$777 USD 10 päivässä
(1 arvostelu)

Very talented and senior Website, Mobile & Desktop Application developer and project manager of our team. 5 years experience in Blockchain Tech & Cryptocurrency Development. My 5kepe Id: Opula Software My contact Lisää

$750 USD 10 päivässä
(0 arvostelua)

Hello, Greetings from Mobiloitte Team! I have reviewed your project scope and understood that you want to create the review system on Blockchain technologies. We are actively participating in the development o Lisää

$3555 USD 22 päivässä
(0 arvostelua)