Blockchain based Smart Contracts

$8-15 USD / hour

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已发布

超过 2 年前

$8-15 USD / hour

Looking for programmers to build Templated Smart Contracts. In essence, once proof of concept is completed I will require multiple updates and ongoing support. The initial round (proof-of-function/concept) will need to use the Blockchain's security protocols. We will need the ability to create multiple contracts in the future. I would want to save a cryptographic signature of a document or file on a Blockchain and retrievable by the recipient of the contract only. Here's an example: 1. Salesperson A uses a link to log into a secure area. That salesperson completes a contract. 2. The data uses a cryptographic signature and is stored as a file (ideally) on a blockchain. 3. The company the salesperson works for receives instant notification and is subsequently able to decrypt the data and process it accordingly. Build using Ethereum virtual machine (EVM). EVM is the runtime environment for smart contracts, and every node in the Ethereum network runs Let's discuss.s an EVM implementation and executes the same instructions. Solidity, as a high-level programming language, is used to write smart contracts, and the contract code is compiled down to EVM bytecode and deployed on the blockchain for execution.

Contracts

Software Architecture

Python

Solidity

Ethereum

项目 ID: 31566753

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@dmmeddin

Hi, This is Dmitrii and I've just caught your job posting. I read all details and I can handle this flexibly. I am sure I will be the best candidate because I have solid knowledge and experience in enterprise solution based on blockchain. I have successfully delivered a wide range of custom cryptocurrency and blockchain development projects using the smart contracts solidity language with eye catching user-friendly UI design and high-end functionalities. I can start immediately and will finish it asap. Hope to discuss details and share our ideas. Looking forward your message. Best Regards.

$15 USD 在40天之内

5.0

(10条评论)

5.6

@ashinnd84

Hi there, we are experts in Blockchain, Rust, Slona, Phantom wallet. Please, message me to start this work and finish in no time. Thanks Ashish

$56 USD 在40天之内

5.0

(4条评论)

3.5

@JackPatrick

Hello, I am a senior blockchain and Cryptocurrency developer with experience of 7+ years. I have expertise in :React.js, Golong, Java, JavaScript, C#, C++, Node.js, python, solidity-Web3, EVM- Smart Contracts INTEGRATION--and I can develop Frontend/Backend for your NFT minting website, Blockchain Nodes Server Management, Sound noesis of Security Algorithms like- SHA256, Hyper ledger, etc. I have expertise in NFT -SOLANA ,BSC, DeFi, Polkadot, __, Tron, Ethereum2.0, Bitcoin and an architect rich experience with Blockchain (both public and private), My expertise includes building new Cryptocurrencies and performing hardforks of the existing PoS and PoW solutions, modifying algorithms and coin supply schemes, customization of wallets etc Waiting for your positive response. Please contact me for sample work and other details through chat.

$11 USD 在40天之内

0.0

(0条评论)

0.0

@edwardscott306

Hello, Hope you are doing well. I am a Senior Blockchain and Cryptocurrency Expert with 9+ years of Experience in Blockchain Industries. My Skills are: - Blockchain, Cryptocurrency, Ethereum, Bitcoin, NEO, Stellar, Tronix, EOS - Secure Smart Contract, Simulations, Solidity, ERC20/ERC223/ERC721 Token, NFTS, polkadot, cardano, Defi, pancakeswap, Uniswap, - Dapps, Decentralized Exchange, Wallets, Crypto Bots - Cryptocurrency Exchange development - C/C++, Java, Golang, Python, reactjs, Node.js etc. Waiting for your valuable response. Thanks.

$12 USD 在40天之内

0.0

(0条评论)

0.0

@Hashtechy

Hello, Blockchain developer, specialised in custom cryptocurrency and blockchain based Enterprise solutions. I have extensive experience in ICO's, STO's, Customising Consensus(POS/POW), Cryptoexchange, Wallets and crypto-bot design, DApps, blockchain websites, web portals, & smart contracts applications development. As a full-stack blockchain developer & solidity programmer, I have successfully delivered a wide range of custom cryptocurrency and blockchain development projects using the smart contracts solidity language with eye-catching user-friendly UI design and high-end functionalities. I understand all aspects of developing Blockchain applications: design, architecture, development, and publishing. ✅ Custom Blockchain Development ✅ Smart Contracts Development ✅ dApps Development ✅ Hyperledger & Multichain Development ✅ Custom Cryptocurrency Development ✅ Cryptocurrency Wallet and Exchange Applications ✅ Private Blockchain Development ✅ Blockchain Consulting ✅ Ongoing Blockchain Development Support and Maintenance I'm flexible with my working hours and will be appreciated to discuss your project at your earliest convenience. Hope that we can work together to make your company a success. Best Regards

$12 USD 在40天之内