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Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.

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    55 trabajados encontrados, precios en USD

    Estoy buscando arquitectos de Software/Blockchain con orientación en Microservicios basado en eventos, para desarrollar en lenguaje RUST mediante tecnología WASM / WASI. Se precisa desarrollar una blockchain realmente ambiciosa y revolucionaria, tanto privada como pública, es decir, federada. Buscamos forjar un ecosistema innovador de intercambio de información / datos y conocimiento, centrado en el usuario y que sea el motor que impulse la revolución de las; redes sociales decentralizadas, aplicaciones decentralizadas y la industria 4.0. Nuestro modelo de negocios es basado en servicios. Nuestra objetivo a corto plazo es el desarrollo de una DAICO (DAO + ICO) Para desarrollar y abordar nuestro sistema de financiación basado en riesgos, de la m...

    $50 / hr (Avg Bid)
    $50 / hr Oferta promedio
    4 ofertas

    Hello, I would like to say that i need testnet, faucet, ssl rpc, block explorer and for for kibaswap. I will need mainnet blockchain as well and dex and token/liquidty locker and launchpad as well. I would like to provide hourly work for next 8months. Thanks.

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    27 ofertas
    NFT Marketplace development 6 días left
    VERIFICADO

    I am looking for an agency who could help me with NFT marketplace, this needs to be developed from scratch. The team should be highly skilled and qualified to work over smart contracts and the basic features required for an marketplace. The reference for the features and functionalities "" The deadline for this project is 3 months, we need the project live within the given timeframe. I would like to see the ready made solution of the marketplaces and please bid only if you have already developed or has experience with NFT marketplace. Please share the portfolio and relevant work in bids, Happy bidding. Thanks

    $4912 (Avg Bid)
    $4912 Oferta promedio
    16 ofertas

    We have to add nexa and other coin in And we need to add a lot of coins here in the future. I want to work long term with a good blockchain developer and avoid autobidding. I will check all the bids and please share your experience of adding coins to bids. Be brave.

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    18 ofertas

    We have to add nexa and other coin in And we need to add a lot of coins here in the future. I want to work long term with a good blockchain developer and avoid autobidding. I will check all the bids and please share your experience of adding coins to bids. Be brave.

    $662 (Avg Bid)
    $662 Oferta promedio
    57 ofertas

    - CryptoCurrency or blcokchain marketing huge plug - Fast learner, have skills in search blockchain groups - Familiar with Ethereum and BSC - Huge bonus had experience working with Solana, Polkadot, Aptos - No special skills are required

    $205 (Avg Bid)
    $205 Oferta promedio
    19 ofertas

    - CryptoCurrency or blcokchain marketing huge plug - Fast learner, have skills in search blockchain groups - Familiar with Ethereum and BSC - Huge bonus had experience working with Solana, Polkadot, Aptos - No special skills are required

    $1077 (Avg Bid)
    $1077 Oferta promedio
    30 ofertas
    Existing Unity game modification 6 días left
    VERIFICADO

    I would want to modify an existing unity game. The game is located withing the unity asset store. The list of modifications include but not limited to: 1) UI changes 2) Integrate API 3) Functional changes Here is the game: The right candidate will have experience in unity game development and an understanding of game assets.

    $1136 (Avg Bid)
    $1136 Oferta promedio
    66 ofertas

    Build a wallet tracker on the blockchain that sends a notification when a transfer is made from a specific wallet

    $249 (Avg Bid)
    $249 Oferta promedio
    29 ofertas

    Hello, I'm looking for someone to develop a "Cold Storage Crypto Wallet" that can be placed on "USB flash drives" for mass production. I want my company name/logo on the software and my interface to have security features. I need my cold storage crypto wallet to be compatible with most "operating systems" and have lots of cryptos to store, not just the top cryptos. I need you to imagine buying my product at a store which means it needs to be universal, user friendly, and easy to use for the average everyday person. I have a company that is producing Flash drives, I just need someone to develop and brand my cold storage USB flash drive crypto wallet. I'm not sure if you heard of ? I'm trying to be a cold storage wallet like ledger.com. I do...

    $23 / hr (Avg Bid)
    Destacado
    $23 / hr Oferta promedio
    18 ofertas

    First project: Swapping dapp Summary: Firstly, we need token development created. User who comes to the website, uses Coinbase, Metamask, Trust wallet(all the popular wallets) to buy credits with USDT, BNB, ETH or $. Later, when the presale starts customers will have a claim function to convert credits to tokens. They will get airdropped tokens for their credits. They have the option to claim 33.3% of their credits per month. When they want to purchase tokens they will get a QR code or address, we need to have phases for purchasing. For example in the first phase when someone purchases, they will get 20% bonus tokens, in the second phase 10% bonus etc... We want to use the gateway for transactions and to have a dynamic address for each transaction, one address one transaction. Th...

    $1340 (Avg Bid)
    $1340 Oferta promedio
    47 ofertas
    crypto exchange create application 6 días left
    VERIFICADO

    i need a person who can create an crypto exchange application creator, Nft launchpad creator and more

    $614 (Avg Bid)
    $614 Oferta promedio
    22 ofertas
    BUILD ME A WEB3 APPLICATION 6 días left
    VERIFICADO

    i need an application which works on smart contract and also need a wallet inbuilt in it and also nft market place

    $1459 (Avg Bid)
    $1459 Oferta promedio
    35 ofertas

    i need a person who can help me in MAKING MONEY BY USING My own cryptocurrency and with less amount of investment need to get more investors. i have plans of creating my own blockchain but need guidance how to make money

    $202 (Avg Bid)
    $202 Oferta promedio
    5 ofertas

    This is a full time freelance role where we pay you the amount you have bid, every month. The job will not start for a couple of months. We need someone who can follow stringent compliance requirements, such as SOC2, ISO27001, HIPAA. Our team of experts need to follow the industry standard of OWASP testing. Somebody who can do graybox , blackbox and whitebox testing. I’m looking for somebody who is extremely knowledgable about this and enjoys working their skill. This is a role with lots of opportunity for progression available for passionate people who care about the company. Monthly tasks: 1. Attend meetings with me where we will find out my customers needs and explain to them how we can help them 2. Fixing vulnerabilities in regular applications, websites or servers & w...

    $780 (Avg Bid)
    $780 Oferta promedio
    59 ofertas

    I need a gpu-based brainwallet search pereferably in cuda opencl is also good. skill in cuda and c++ is essential

    $198 (Avg Bid)
    $198 Oferta promedio
    19 ofertas
    Blockchain Consultant 5 días left
    VERIFICADO

    We are looking for a Blockchain consultant with a blockchain development background in Private or public blockchains. Someone with cryptography knowledge, Decentralized application architecture, and decentralized identities, as well as in the zero-knowledge proof. You must have at least three years of experience with a resume/cv ready.

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    35 ofertas

    Hello Basically i had a script that can find long and short positions, for any insturment. Now i want to modify it, my plan is to plot the long short alerts of BTCUSDT on the chart of other coins. Like when there is a long position on BTCUSDT, i want to see a long alert on the AVAXUSDT chart with text saying "BTC LG" Please if dont know how to do it dont submit I WILL NOT SHARE FULL SCRIPT

    $160 (Avg Bid)
    $160 Oferta promedio
    23 ofertas

    I need a flashing software for bitcoin and other cryptocurrencies and its completely supported till you successfully withdraw your BTC. Feature:- It works with all wallets Software is available ok the pc It's tradable, transferable and spendable Cannot cancel a transaction with bitcoin server 100% transaction confirmed You can spend bitcoins easily on any other address (Segwit address, legacy, Segwit / bch32) No crash bot/software 60 days flash stability All wallet support

    $11246 (Avg Bid)
    $11246 Oferta promedio
    6 ofertas

    We need you provide a script that can send a callback with an estimated Gas fee, say with a probability range of 99, 95, 90, 80, 70 % probability chance of being included in a block (amount of transactions in a pending block, max price in pending block, base fee Gwei. We run our own node, so it can use that data, to calculate

    $58 (Avg Bid)
    $58 Oferta promedio
    14 ofertas

    I'm Damian, part of the product team at Wagmi, a Web3 Venture Studio based in Barcelona. We are building a white-label platform, designed to simplify communication, that lets web3 projects connect easily to their community in an all-in-one place. We propose to schedule a short meeting with you to validate the problem's hypothesis and the solution. After the conversation, if you are still interested in our product, you will have FREE full access. Are you interested in getting to know more detail? Let me know! Thank you in advance.

    $24 (Avg Bid)
    $24 Oferta promedio
    8 ofertas

    I want to call localhost APIs from solidity smart contract. Local APIs such as: GET list: http://localhost:3001/api/locations POST: http://localhost:3001/api/person/ ... DELETE: http://localhost:3001/api/city/id If you want to use Oracle Blockchain then it must be free not paid service. You explain all steps to do that from my side, if there are problems, then you can access to my system using Team Viewer for example. Thanks,

    $75 (Avg Bid)
    $75 Oferta promedio
    9 ofertas
    Required NFT artwork designer 4 días left
    VERIFICADO

    I have a collection of digital images and I need information and advice on the whole procedure on how to create an NFT of each image and publish them on solana with ETH blockchain network. And how can I get profitability from these images.

    $606 (Avg Bid)
    $606 Oferta promedio
    32 ofertas
    Required NFT artwork designer 4 días left
    VERIFICADO

    I have a collection of digital images and I need information and advice on the whole procedure on how to create an NFT of each image and publish them on solana with ETH blockchain network. And how can I get profitability from these images.

    $50 / hr (Avg Bid)
    $50 / hr Oferta promedio
    9 ofertas

    Need a smart contract developer for smart contraction interaction ico contract with the front end. need from India only.

    $17 / hr (Avg Bid)
    $17 / hr Oferta promedio
    6 ofertas

    I need to add these two Kaspa and some coins in Miningcore source code. please bid have experience in this field.

    $62 (Avg Bid)
    $62 Oferta promedio
    6 ofertas

    blockchain developer needed for mining contract and crypto contract

    $322 (Avg Bid)
    $322 Oferta promedio
    46 ofertas
    Opendax Peatio 4 días left

    We want to design frontend UI for opendax Peatio 2.6. Demo providers will be prefered first.

    $35 (Avg Bid)
    $35 Oferta promedio
    2 ofertas

    Требуется разработчик Cosmos SDK, CosmWasm, Secret network, Rust, Node.js для создания платёжного сервиса на основе Secret network

    $10000 (Avg Bid)
    $10000 Oferta promedio
    2 ofertas
    Start with: Write Use Cases 4 días left
    VERIFICADO

    SMART CONTRACTS Looking to write these use cases, and then (maybe) develop them. Need to write use cases for the following: Smart Contract as Title: I imagine tradeable token(s), that are linked or? One token will show the state of all the fractional title holders within the whole of a titled object, and other tokens will represent fractional ownership of the whole (I’m open to ideas on how to do this). I have questions about how much data I can or should store on-chain. I imagine an excel-like spread sheet shows all relevant data- which may be on or off chain with a decryption key provided if off chain. Smart Contract to Create Crypto Currency: Create a Crypto Currency that admin sets quantity in circulation—Presumably an ERC-20 Token Smart Contract as Title and Account...

    $203 (Avg Bid)
    $203 Oferta promedio
    12 ofertas

    Hi, Andre, As a Full-Stack web developer, I'd like to support this position. Looking forward to hearing from you. Sergii.

    $33 / hr (Avg Bid)
    $33 / hr Oferta promedio
    13 ofertas

    We are looking to create curicullum with important points and a couple of questionares for M Tech programs. Subjects: 1. Big Data, 2. Cloud Computing and 3. Block Chain We are also looking for SMEs to create guided projects to be performed by the students as well. Here are the notes about the requirements: These notes will be in PDF format with about 6-7 pages. These notes are given to the faculties for facilitating the classes. These notes are given to the students as hand-outs for their reference and homework. Assessments should be there at the end of every module. Assessments can have subjective and objective (open-ended) questions. Courses begin in the first week of Feb-’22. Each semester has 5 subjects. One classroom note for eac...

    $19 / hr (Avg Bid)
    $19 / hr Oferta promedio
    8 ofertas
    Mobile Wallet 3 días left

    Mobile wallet for a (chia blockchain) Wallet should support Chia (XCH), Chia cats, and later Chia Forks Mobile app design is ready. Fees and logic are planned

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    41 ofertas
    Bootstrap website 3 días left
    VERIFICADO

    I need a bootstrap website with same functions (homepage, login page and wallet address management) as below website.

    $104 (Avg Bid)
    $104 Oferta promedio
    39 ofertas

    I need a bootstrap website with same functions (homepage, login page and wallet address management) as below website.

    $108 (Avg Bid)
    $108 Oferta promedio
    19 ofertas

    Hello! I'm trying to make a simple coin swap site. Who can help me?

    $2502 (Avg Bid)
    $2502 Oferta promedio
    55 ofertas

    We are building a blockchain platform for decentralised applications (Dapps) and helping to create a blockchain ecosystem that allow for scaling and connecting disparate blockchains. We are looking for a member who has • Excellent Understanding of Blockchain Technology • Proficiency in at least one high-level programming language • Solid grasp of cryptography and security principles • Experience with distributed systems and peer-to-peer networking • Knowledge of smart contracts • Familiarity with Algorithm and Data Structures

    $38 / hr (Avg Bid)
    $38 / hr Oferta promedio
    71 ofertas
    Fork Web and App from Github 3 días left
    VERIFICADO

    i need to fork a project from github and run on my own server and you have to do a monero blockchain fork too..

    $928 (Avg Bid)
    $928 Oferta promedio
    34 ofertas

    We are building an secure online platform for buying, selling, transferring, and storing cryptocurrency. • Excellent Understanding of Blockchain Technology • Knowledge of smart contracts • To assist and service customers, providing a high standard of customer service • To assist people how to trade cryptocurrency

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    42 ofertas

    i need a programmer to who can edit a cuda program i need three more functions added to my cuda source knowledge of cuda c c++ is mandatory

    $181 (Avg Bid)
    $181 Oferta promedio
    18 ofertas

    Hello Basically i had a script that can find long and short positions, for any insturment. Now i want to modify it, my plan is to plot the long short alerts of BTCUSDT on the chart of other coins. Like when there is a long position on BTCUSDT, i want to see a long alert on the AVAXUSDT chart with text saying "BTC LG" Please if dont know how to do it dont submit I WILL NOT SHARE FULL SCRIPT

    $64 (Avg Bid)
    $64 Oferta promedio
    8 ofertas

    I am looking for someone who can update me on the status of the cryptocurrency market and emerging market trends etc. i am familiar with previous trends. Bitconnect, ico, Defi, layer 2 solutions, crypto lending, NFT’s etc. i am aware that there are new emerging trends at the moment which are buried in the current Bear market. You will serve as my crypto investment consultant

    $38 (Avg Bid)
    $38 Oferta promedio
    11 ofertas

    Blockchain Website & App Expert require for Payment Exchange and own Payment Gateway - Platform Require Like Stripe and PayPal + with multiple options for Accepting payments and Sending payouts globally. Website & App Design Responsive Website & App Development (Flutter or React Native) Modern Design, Extra Smooth Transitions & 3d Look Money Exchange. Wallet - Account, Transactions, Card, etc. Payment Gateway. (API, SDK & Plugins) Panels/Dashboard Full Website & App Control - Admin Panel & Staff Panel Website, App, Admin & APIs, SDK, Plugins Complete Documentation and 6 month complete Support -- Users can credit payments to their website account (from any source) -- Users can withdraw payments to any required accounts (banks, cards, etc.) -- The website ...

    $2770 (Avg Bid)
    $2770 Oferta promedio
    25 ofertas

    Creation of a website for integration with web wallets 3. (the most common, such as Metamask, etc.). Within the site a specific section for the Marketplace (opensea type) for the sale of NFTs. The NFTs in GBL file questions are 3D models for the metaverse. It will be important to implement the ERC1135 (multi token) protocol and the ERC4907 (Rentable) protocol in the NFTs that will be minted on the Polygon blockchain.

    $38 / hr (Avg Bid)
    $38 / hr Oferta promedio
    53 ofertas

    Hello Everybody. I am a CTO of DXL Company. In our company, we are going to build exchange platform like Robinhood. So We have to publish first version to get invest. We already have a few investors and in the next January, we are going to show first version to investors. So if they are satisfied, we can collect almost $500,000 and we can go to next round. In the second round, we will found own coin and this coin price will be 10$. So in the first round, your task is the building website (very professional, and responsibility) and build the backend. So In term of first round, we will give you equity and your role is the developer & leader of team. If you want salary, we can support 1000$ per month with equity. But equity is very useful. Because our investors and clients are very powe...

    $2351 (Avg Bid)
    $2351 Oferta promedio
    65 ofertas

    I would like to implement the metavers feature on my current site. please bid metaverse blockchain developer.

    $1497 (Avg Bid)
    $1497 Oferta promedio
    51 ofertas

    I would like to implement the metabuzz feature on my current site. please bid metaverse blockchain developer.

    $1636 (Avg Bid)
    $1636 Oferta promedio
    42 ofertas
    python blockchain expert 1 día left
    VERIFICADO

    hello i need an expert in python to help us in a project we are working on regarding blcokchain please let us know if you have enough experience in this more details will be shared later

    $2 - $8 / hr
    Destacado Sellado Acuerdo de Confidencialidad
    $2 - $8 / hr
    10 ofertas
    Betting site that bets with crypto 11 horas left
    VERIFICADO

    I need a betting site that allows me to enter betting odds and other people to bet on them using our crypto. Must be able to use all skills in the requirements. If you can not do this, do not apply. If you dont have anything to show that you did this before, do not apply. If you ask me my budget instead of bidding, do not apply.

    $756 (Avg Bid)
    $756 Oferta promedio
    66 ofertas
    Blockchain EVM 6 horas left
    VERIFICADO

    Create an EVM blockchain with an infinity of words that are generated by the blockchain and not known words as currently to counter quantum computers

    $2874 (Avg Bid)
    $2874 Oferta promedio
    75 ofertas

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