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.

Skills: Blockchain, Java, PHP, Python

See more: smart contract without blockchain, smart contract examples, smart contract applications, distributed ledger smart contracts, blockchain smart contracts pdf, smart contracts blockchain explained, smart contracts not on blockchain, smart contract use cases, order find better price company following, post contract document, show block taxonomy drupal code php, drupal block display php code true, block port source code, microchip contract programer, drupal block display php code, list following people twitter sample code, call block android source code, contract expiration date access database, please identify flaws proposal provide explanations better solutions, block algorithm unix code

About the Employer:
( 0 reviews ) Murcia, Spain

Project ID: #17962202

32 freelancers are bidding on average $1767 for this job


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 More

$1055 USD in 10 days
(153 Reviews)

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 More

$555 USD in 10 days
(42 Reviews)

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 More

$27777 USD in 60 days
(97 Reviews)

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) More

$250 USD in 2 days
(60 Reviews)

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 in 10 days
(38 Reviews)

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:// More

$555 USD in 10 days
(103 Reviews)

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 More

$3000 USD in 30 days
(115 Reviews)

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 More

$555 USD in 10 days
(43 Reviews)

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 More

$2000 USD in 10 days
(64 Reviews)

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 More

$1000 USD in 10 days
(54 Reviews)

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 More

$611 USD in 11 days
(42 Reviews)

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 More

$4444 USD in 55 days
(33 Reviews)

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 More

$600 USD in 10 days
(46 Reviews)

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 More

$600 USD in 3 days
(22 Reviews)

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 More

$555 USD in 10 days
(19 Reviews)

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 in 20 days
(19 Reviews)

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 More

$999 USD in 10 days
(10 Reviews)

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 More

$555 USD in 10 days
(19 Reviews)

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 . More

$833 USD in 10 days
(22 Reviews)

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 More

$500 USD in 3 days
(7 Reviews)