Document Blockchain smart contract

The project has to be a simple blockchain file share smart contract.

Files will be downloaded only by determined users and all the users will be able to know, who has access the files and when and if the file has been changed.

Also, the files have to be encrypted.

Ethereum blockchain or other opensource software can be used for the project. As much code used from opensource solutions it will be better.

The block needs the following data: file_id, date_modification, id_user, if the user has accessed the data or not, link to the file.

The languaje will be determined by the programer.

Taidot: Blockchain, Java, PHP, Python

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Tietoa työnantajasta:
( 0 arvostelua ) Murcia, Spain

Projektin tunnus: #17962202

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


Hi, I am a certified smart contract developer, I am blockchain expert and provide the complete solution, ICO, smart contract, white paper, blockchain integration, Dapps, DAOS, web wallet, with ECR20 and ECR23 with the Lisää

$1055 USD 10 päivässä
(153 arvostelua)

Hello , Hope you are doing fabulous today!! As per your requirement I'm very much comfortable to assist you for create ethereum Blockchain,smart contract, ERC 721 tokens, wallet, whitepaper marketting, ICO prom Lisää

$555 USD 10 päivässä
(42 arvostelua)

Hello sir, we are team of 62 people expert in blockchain chain technology with C++ and solidity [login to view URL] have developed many altcoins and ETH smart contract with ERC 20. we have developed many crypto to cry Lisää

$27777 USD 60 päivässä
(97 arvostelua)

Full Stack Developer (Blockchain Expert) - hourly rate: 30$ - Masters degree in Computer Science - more than 10 years experience in Development on IT jobs. - Flexible working time (possible on weekend, night, day) Lisää

$250 USD 2 päivässä
(60 arvostelua)

Interested Project. I have enough experience on blockchain and smart contract. you can see it at my profile. I understood your requirements. I will wait for your response on here. Thanks.

$555 USD 10 päivässä
(38 arvostelua)

4 years experience in Blockchain & Cryptocurrency technology. Forking experience in Bitcoin, Monero, Ethereum, Dash, Ripple, PIVX, etc.. == Developed Coins: [login to view URL] [login to view URL] https:// Lisää

$555 USD 10 päivässä
(103 arvostelua)

We have launched ETH Fork with 5 Billion Coins along with blockchain, Wallet(Window, Linux, Mac) supportive POS/POW, ICO, White Paper, exchange listing, exchange & trading system. As well as we are expert with Waves bl Lisää

$3000 USD 30 päivässä
(115 arvostelua)

Hello, I am very interested to work in this project because my full experiences and skills are great for this position. I have rich experiences with Blcokchian smart contract. I am sure i can handle this project to the Lisää

$555 USD 10 päivässä
(43 arvostelua)

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 sol Lisää

$2000 USD 10 päivässä
(64 arvostelua)

This is Anshuman from Atventus India Private Limited. We expertise in Blockchain and BitCoin development. We have lots of experience in setting up direct BitCoin blockchain transactions with all the wallet features. T Lisää

$1000 USD 10 päivässä
(54 arvostelua)

Dear Sir, Greeting from my side, Please accept my proposal for the job of Document Blockchain smart contract I would like to apply for this job, and we will make it as per your requirement, as described in your Jo Lisää

$611 USD 11 päivässä
(42 arvostelua)

Hello, As i check this application is based on blockchain file share smart contract and we should use for that ethereum blockchain based open source code like this one i give you two best code which is best fit for t Lisää

$4444 USD 55 päivässä
(33 arvostelua)

Hi there, I've read your project description and I am confident enough that I can handle this project according to your expectations. I have done similar projects before and I want to take over this project as well. If Lisää

$600 USD 10 päivässä
(46 arvostelua)

Hi! How are you doing? I'm happy to bid on this interesting project. I've been working on Cryptocurrency for 3 years and have a solid understanding of it. I've built several complex smart contracts so I have 100 Lisää

$600 USD 3 päivässä
(22 arvostelua)

How are you? I read your description carefully and I am interested your project. I am C++ and Web, Mobile Expert. Especially I have a rich of experience of PIVX and Dash and Nova coin fork. I can show all of scri Lisää

$555 USD 10 päivässä
(19 arvostelua)

Hello Project Owner, Greetings of the day! I am interested to work on the Project! We can develop this solution in Ethereum. Please can you share more details and let me know when to start. Regards, Ashwani

$833 USD 20 päivässä
(19 arvostelua)

Hello Jorge, "Greetings from Imperial Softech". I can develop a Smart Contract for you. We have developed a Smart Contracts for various Decentralized Applications. We can develop as per your requirements and Lisää

$999 USD 10 päivässä
(10 arvostelua)

Dear Client, Greetings!! We have few queries kindly ping us. Thanks for giving us the opportunity to bid over the requirement. As per your requirement, you would like to develop a Website. We would like to share Lisää

$555 USD 10 päivässä
(19 arvostelua)

I are team of Blockchain developer , we have succefully completed project in Blockchain Decentralise Applications , ICO , Smart contracts etc . I request you to kindly open the chat so we can discuss in details . Lisää

$833 USD 10 päivässä
(22 arvostelua)

Hi,sir. I am super interested in your project - 'Document Blockchain smart contract' :) I believe that my 12+ years of experience in development makes me highly qualified for this project. I'm sure that I would be an a Lisää

$500 USD 3 päivässä
(7 arvostelua)