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Smart Contract Development (ERC721) & API & development of a Native Real Estate Dapp (Decentralized App)

$10000-20000 CAD

Închis
Data postării: peste 5 ani în urmă

$10000-20000 CAD

Plata la predare
We need a smart contract developed with the ERC721 token. An API or SDK will need to be developed as well to communicate with the smart contract to develop our Real Estate Dapp. See below for the Dapp functionality for our MVP. This could be a long term engagement for our full Dapp, if the MVP developed is up to our standard. *1.* Information Architecture - create a database that houses the UUIDs & Passwords and any other verifications needed to link to their Chelle Wallet where the ERC-20 tokens that were purchased from our ICO cabinet (for MVP). The database must be able to migrate new columns and/or rows as we scale the app up in Phase 2 where users will be able to convert fiat currencies and other cryptocurrencies like Bitcoin. The database must also keep information about properties that we have purchased (total amount that can be invested), and keep information on how much was invested by each user, and a schema developed per property that holds information specific to said property (sq footage, rooms, floors, pets allowed, security, location etc),. Properties will be added consistently, and the information architecture must be easily updated. *2.* We need further information/consultation, but another smart contract might need to be developed that handles the logic associated with the creation of the ERC 721 tokens once a user invests in one of our property listings (for MVP). This must be able to scale up in Phase 2 of our app where users will receive monthly returns (dividends) based off the allotted percentage they have invested in each property. *3.* The back-end logic must communicate with the smart contract(s). Display a users Total Token Balance, how many Invested Tokens and in which specific properties, and tokens left for investing. This must be able to scale for buying/selling properties as well as receive monthly dividends in Phase 2. This might be done with an API to crypto wallet agency. *4.* Each listed property must have a total amount of investment opportunity. This can be shown with a progress bar and must pull information from the database on how much has been invested by all users on each property listed. *5.* Users must be able to scroll through our property listings, where they can click on a specific property that leads to another page. This page will contain more details regarding the property: sq footage, rooms, floors, pets allowed, security, location (google maps API), brief description etc. *6.* If a user chooses to allocate their ERC 20 tokens, the back-end must communicate with the smart contract to issue ERC 721 to users which will be represented as an investment allocation on said property. This will update the users Chelle Wallet, and the user's property portfolio *7.* A portfolio page must be created that shows all the properties a user as invested in and how many tokens were allocated in each. *8.* A wallet tab that shows users their Chelle token balance and Chelle Token value. The portfolio page can be apart of this. *Strategic Planning to Oversee:* - User's story - How this person/agency will define the infrastructure requirements and scaling techniques - how this person/agency defines smart contract integration logic with ethereum blockchain - sending transactions to Blockchain/mainnet/sidechain - tracking transactions/balance changes, block changes etc - back-end integration with smart contract. *Back-end:* Nodejs/Python/Ruby on Rails? *Front-end* must be a native app for both IOS and android (Reactjs). Open to suggestions
ID-ul proiectului: 18145554

Despre proiect

52 propuneri
Proiect la distanță
Activ: 5 ani în urmă

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52 freelancers are bidding on average $14.898 CAD for this job
Avatarul utilizatorului
Hi ***Let's built the successful project together*** https://www.freelancer.com/u/HugeWave.html This is my freelancer.com profile and you can review my past experience and projects here. As you see , We have good experience in this field.. We have developed lots of mobile app and websites last time .. Please send me a private messages so we can discuss about your project more detail. I will provide wonderful project and qualitative code , also after complete I provide full service and do my best for you. Let's built Business relationship together. Regards Lee
$10.000 CAD în 10 zile
5,0 (106 recenzii)
9,0
9,0
Avatarul utilizatorului
Hey there, I’m a frontend / backend developer. I can virtually build any app/site with any of the most complex functions you’ve envisioned. Do message me to discuss your project in greater detail!
$16.666 CAD în 7 zile
5,0 (16 recenzii)
7,9
7,9
Avatarul utilizatorului
Hello , I have similar kind of expertise and work experience. I have gone through your requirement and understand that,you are looking for highly skilled, qualified, and experience Mobile App development team for your project. I am glad to say we have worked on many apps in various domain like Dating app ,Restaurant app, Buy& Sell business app, healthcare, social app, chat app, real estate app, ecommerce app, dictionary app, etc... My Queries: 1) Web-services or related Third Party API will be provided by you? 2) Have you have any reference in mind which includes your whole concept or if you have already created a doc then please share with me ? ----Service Guarantee------ *24*7 hours live support. *Free of cost technical support . *No charges for deployment. I'm interested in working with you. As per your interest, I can talk for a better deal. I am available almost the whole day for discussion. Looking forward for your Response. Thanks, Technorizen
$11.000 CAD în 10 zile
4,3 (182 recenzii)
8,8
8,8
Avatarul utilizatorului
Hi, I just read your job posting and am so interested in your job as a senior full-stack developer. As you can see in my profile (http://www.freelancer.com/u/kchg) I have so much experienced with building the real estate app using various language especially Python & Javascript for over 8 years. I have also very experienced with Blockchain & Ethereum. Actually I have no job on my hands at the moment so can start your job immediately and can dedicate my full time to your job. I am able to deliver CLEAN and SOLID code. I would like to discuss with you if you wish. Regards.
$20.000 CAD în 10 zile
4,9 (35 recenzii)
7,8
7,8
Avatarul utilizatorului
My name is LiMing. I read your project description and understood your idea perfectly i can develop your project, "Smart Contract Development (ERC721) & API & development of a Native Real Estate Dapp (Decentralized App) " perfectly without any issues This is my freelancer.com profile and please check my profile .. https://www.freelancer.com/u/jinzhenzhu8691 I have developed an app similar to your idea in past time. We are TEAM, Team consisted of top developers(15 Members) If we get a project , we discuss the project in team. And then, best developers will be choice and the project will be completed perfectly without a issue. So that , the digital business of client will success and, the client and we will happy. A project is completed by joined effort of a client and a developer. The best developers who you are looking for is in here. Thank you
$16.666 CAD în 10 zile
5,0 (34 recenzii)
7,5
7,5
Avatarul utilizatorului
hi, would love to develop your mvp to reach the full project to do as wel, my biggest suggestion to may be to the mobile apps natively? And i can take care of the api and backend no worries. I am a Pro iOS & Android App developer here, I always strive to finish all my projects, also please check my latest reviews, portfolio on my profile page directly, Kind Regards, Iryna!
$20.000 CAD în 45 zile
4,4 (113 recenzii)
8,5
8,5
Avatarul utilizatorului
Hi, How are you? I have enough experience on erc20, erc 721 and smart contract and web3. I finished token exchange a few months ago. So I have enough experience on that. Regards
$10.000 CAD în 50 zile
5,0 (63 recenzii)
7,5
7,5
Avatarul utilizatorului
Full Stack Developer (Cryptocurrency Expert) I am confident that you will be completely satisfied with the quality, timeliness, and professionalism of my work. - Masters degree in Computer Science - more than 10 years experience in Development on IT jobs. - Flexible working time (possible on weekend, night, day) - like to work in the team. Experiences: Blockchain and cryptocurrency expert, OS Administrator, Developed a lot of Applications(web and mobile, desktop) Hope to hear messages from you! Thanks!
$10.000 CAD în 40 zile
4,9 (41 recenzii)
7,3
7,3
Avatarul utilizatorului
Dear client! Glad to meet you. I am very pleased to see your project. I'm a CRYPTOCURRENCY FULL STACK DEVELOPER. I made forks from Dash, PIVX, OneMillion,Phore, and so on. I have been developing Blockchain, Decentralized Exchanges, Crypto Coins based on ERC20, Bitcoin Core, X11, IOTA, Dash, Minning Pools, Block Explorers, trading platforms, Wallets, Daemons. I can do or can support for you as follows: -Programming language: RoR, python/flask/django, node js, laravel - Miner software - Mining pool - High performance algorithm - Multi platform wallets (Windows, MacOS, iPhone, Android) - Trading Website - ICO - Block Explorer -ICO development -DApps (Decentralized application) development -Cryptocurrency, Bitcoin exchange -Ethereum, NodeJS development -Digital asset exchange -Blockchain development -Fork Alt coins development. In particularly, I place my highest priority on quality for your good business. Please feel free to call me at any time. Hope to see you soon on chat. Thanks.
$30.000 CAD în 10 zile
4,9 (62 recenzii)
7,4
7,4
Avatarul utilizatorului
How are you? I read your description carefully and I am interested your project. I am Blockchain, C++, Web, and Mobile Expert. Especially I have a rich of experience of PIVX and Dash and Nova, monero, ethereum coin fork. I can build POW/POS/MN coin, all of script, quark, x11/x13/x16, creating genesis block, premine, masternode setup, wallet, blockexplorer&mining pool and so on. I can perfectly finish. - Wallet(Windows, MacOS, Web, iPhone, Android) - Block Explorer - mining Pool - Cryptocurrency Exchange - Trading Site and ICO. I will wait for your contact. Best Regards
$10.000 CAD în 10 zile
5,0 (47 recenzii)
7,1
7,1
Avatarul utilizatorului
Hello, I read the description of your project thoroughly. I understand your requirements basically, and I have experiences of similar project. I am professional Website builder and Mobile App developer, and talented Angular/Nodejs/Vuejs especially. Also I can provide other windows desktop application using .NET techniques. You can see my abilities in my recent reviews, on my profile page. https://www.freelancer.com/u/luiswilliam Now, I have enough time to work for your project and I'm ready to go with you. Usually, I would provide long term support on the work I did. Looking forward your contacting. Thanks! 1542046700048
$10.000 CAD în 2 zile
4,9 (14 recenzii)
6,4
6,4
Avatarul utilizatorului
Hi Dear, Do you want a real state app or blockchain app or you want to combine both things? We don't just build an application, We build the reputation, trust, and relationship. I have excellent experience in Application development. We have 5+ years experience in application development and 7+ years in Information technology field. I have rich experiences in android and ios area. I have developed several design, content management, and social apps. I am sure I can do your project within your timeline and budget. We have 5 Star rating in freelancer in application development and, We have 90+ Android and iOS application developed. I have gone through your job description very carefully and We are very much interested in your project and we are enough confident to start work on your project. I have few queries and suggestions to discuss. Please initiate the Freelancer Chat Box Looking forward to hearing from you. Thanks Kumarsingh
$19.000 CAD în 190 zile
4,9 (78 recenzii)
6,6
6,6
Avatarul utilizatorului
Hi, I am a blockchain developer having an expertise in various domains of blockchain development. I have skills, technical knowledge and rich experience of working on wide varieties of Blockchain projects. I have 4 years of experience in Blockchain and overall 7 Years of development experience. My key contributions to the field include: 1. Helping people launch their own ICOs. I have successfully completed more than 10+ ICO's . 2. Expertise in Ethereum, Bitcoin, Hyperledger project development. 3. Expertise in writing Smart Contracts. 4. Expert in Crypto Currency Exchange. 5. Consulting in High-Level Blockchain Technical need. 6. Expert in Asset Registry Platform. 7. Blockchain in Healthcare, finance, gambling, supply chain, inventory control etc. 8. Blockchain in Credit Rist Assessment. 9. Blockchain in Finance. 10. Blockchain in Health Care. Let's have interview to discuss in detail. Regards, Chunyan
$20.000 CAD în 60 zile
4,9 (8 recenzii)
5,7
5,7
Avatarul utilizatorului
Hello! I am a python developer. I looked at your project and it seems interesting. I have all necessary skills required for this project. Ping me to discuss in detail.
$15.000 CAD în 2 zile
4,7 (34 recenzii)
5,5
5,5
Avatarul utilizatorului
Hello Sir, I have read your requirement and understood that you are looking for a Smart Contract Development (ERC721) & API & development of a Native Real Estate Dapp (Decentralized App). I have read all point your mentioned 8 and understood we will happy to develop this project as per your need. *Back-end:* Nodejs/Python/Ruby on Rails? *Front-end* must be a native app for both IOS and Android (Reactjs). You will get the best price with the best quality of work and service from us than other because we like to keep a long-term relationship with our clients. Can you please share your best time for the chat so we can discuss further and move ahead. Let's discuss further in details. Awaiting your response. Best Regards, Mirali Ghelani
$12.222 CAD în 60 zile
5,0 (6 recenzii)
4,4
4,4
Avatarul utilizatorului
This is Arjun from Mohali, India. I have been into Bitcoin/Blockchain Development for the past five years and I have developed some very excellent crypto exchanges. I am a Blockchain expert and provide complete solutions relating to ICO, Smart Contract, White Paper, Blockchain Integrations, DAPPS, DAOS, Web Wallet and also ERC20, ERC23. I also have extensive experience in developing digital currencies with complete marketing plan as well. I can do this project within the given time as I expertise at it. I will ensure great communication throughout the project with timely updates about the progress of the project. I would like to have a chat with you about the project and discuss more about how I will be approaching this task. Ping me and let’s get started. Thank you.
$16.666 CAD în 10 zile
5,0 (4 recenzii)
3,9
3,9
Avatarul utilizatorului
Hi, As you can see I'm new at freelancer, But I possess excellent experience in Hybrid and Native application. I have worked on the Platform like React Native, React JS, Node JS (4+ Years of experience in Java script). I worked on trending features like Geo location , QR code Scanner , Image Recognition I have read the work scope but I need some clarification or detailed requirement So it would be great if I could have a word with you over Private chat Thanks
$16.666 CAD în 10 zile
5,0 (1 recenzie)
4,0
4,0
Avatarul utilizatorului
Hello, Hope you are doing well. I can design & develop Smart Contract Development (ERC721) & API & development of a Native Real Estate app i have also experience in Block Chain website ethereum contract including all the mentioned points as per your need and requirement. We have worked for many real estates website. We can develop an customize CRM for your real-estate agency with all functions: -- Account and Contact Management -- Enquiry Management/ Lead Tracking -- Leasing Software -- Properties & Real Estate Listing Management -- Facilities Software -- Documents & Payment Collection Management -- Renewals & Agreements Management -- Real Estate Management -- Reminders, Notifications & Alerts --Sales Reports & Analysis Why we are: -- I would like to discuss your project details to provide you a concise quote. And can prepare a proper document for your requirement. -- Ready to sign NDA also. -- Project will be in flow(Requirement Gathering & Analysing, Designing & Development, Testing & bug fixing, Deployment. Looking forward to speaking with you. Thank you
$15.555 CAD în 10 zile
5,0 (3 recenzii)
3,0
3,0
Avatarul utilizatorului
I have experience to work your project. I'll complete your requirements according to job instruction. I am ready to work.
$11.111 CAD în 50 zile
5,0 (3 recenzii)
2,3
2,3
Avatarul utilizatorului
I have Core team of Developers and Designers helps quality product for a new company is highly recommended one in the field of Web Designing, Development. Dear Client, ## We are working on a. PHP b. SEO c. WordPress d. Web Development e. Magento f. Design g. eCommerce h. Internet Marketing ----Why choose us ---- # Rich Experience: Developers are highly skilled. # Reliable Team: Friendly and Professional. # Affordable pricing plans. # Quality source codes. # Rich dynamic web development. # Strong Open Source Development Expertise. # Time bound service. # Long Term customer relationship.
$16.666 CAD în 10 zile
0,0 (0 recenzii)
0,0
0,0

Despre client

Steagul CANADA
Mississauga, Canada
5,0
3
Metoda de plată a fost confirmată
Membru din nov. 12, 2018

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