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Bitcoin is a crypto currency, with the creation and the transfer of the bitcoins being based on a protocol that does not depend on the central authority. The coins can be transferred through computers or through smartphones and related devices, without the necessity of having a financial institution as an intermediate. This concept was established by Satoshi Nakamoto in 2008 and it was geared towards the world of electronic cash systems. If you understand more about this topic on a professional level, then you have a better chance to enjoy the advantages of being a freelancer at Freelancer.com.

Bitcoin has its own technical part that needs to be addressed by professionals. If you are one of them, then you should be on a platform that ensures the consistency of job posting by clients. When working as a bitcoin freelancer at Freelancer.com, you will have access to many of the jobs posted by clients from all over the world and bid on those that are within your professional level. There is too much to enjoy while working at the leading freelancer platform online, including getting paid at rates that your services deserve, giving you the encouragement you need to keep on working on more Bitcoin projects.

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    71 jobs found, pricing in USD

    I have a FX wallet for btc with a Craxid Delic report and need in to be interested to know its strength and test whether it has enough matrices for withdrawals. [login to view URL]

    $30 - $250
    $30 - $250
    0 bids

    We are looking for someone to help take our Token to the next level. We currently have a dev team building our network and completing our website. We would like to have our token public profile updated and Token application for all exchanges and etherscan info updated. Major goals -- - Token info updated on [login to view URL] - Token added to at least two exchanges and added to uniswap with fu...

    $206 (Avg Bid)
    $206 Avg Bid
    5 bids

    We are looking for a blockchain developer to build a Non-Fungible Tokens (ERC-721) tracker, a sort of blockchain explorer. Specifically, we want to track the sales of the NFT called "NBA Top Shot" ([login to view URL]). To do so, you will have to access the Flow Network using their API ([login to view URL]). We are looking to build something similar to the following sites: [login to vie...

    $13 / hr (Avg Bid)
    $13 / hr Avg Bid
    2 bids

    Add Cryptocurrency(Bitcoin) on wallet in my website made in PHP.

    $41 (Avg Bid)
    $41 Avg Bid
    5 bids

    Hello I am interested in your services, But I am curious if you think you might be able to get this blockchain to work [login to view URL] I have allready installed yiimp ([login to view URL]) but I have no idea how to get the daemon to talk to the rpc server, no matter how I write the config for the node, nothing works. If you can help me figure this out I will gladly hire you. Thank you!

    $300 (Avg Bid)
    $300 Avg Bid
    1 bids

    Make a fork of pancake swap for staking Site of pancake swap: [login to view URL] Code of pancake swap: [login to view URL] [login to view URL] [login to view URL] you have to make a fork where: use put in staking: bnb, busd, usdt, eth. and receving as reward our token. or put in stake our token and receive other our token this fork can be make with open-source code. you only have to setup...

    $715 (Avg Bid)
    $715 Avg Bid
    3 bids

    Our server wrote 2 private keys from 2 btc wallets wrong. They got the same number of characters and start both with the same character 'y'. The script in the attachment made the btc wallet number with private key, as you can see had to be updated sooner. btc key: 178ukYnmXtfDrVvBGBqvRss9msMuZmYfFc private key: ygDx2pqAamuuyCZE5bV3GStik5ZWiioPwiHyFm6FWPmjq4tUv Solve this one and get ...

    $4000 (Avg Bid)
    $4000 Avg Bid
    1 bids

    Add Cryptocurrency(Bitcoin) on wallet in my website made in PHP.

    $32 (Avg Bid)
    $32 Avg Bid
    3 bids

    Add Cryptocurrency(Bitcoin) on wallet in my website.

    $18 (Avg Bid)
    $18 Avg Bid
    7 bids

    Hello i need someone or a team to make Web3 wallet on Tron network for chrome and firefox

    $1326 (Avg Bid)
    $1326 Avg Bid
    11 bids

    FlareNetworks is brining smart contracts and DeFi to the XRP Ledger and we'd like to be a part of it as a Flare Time Series Oracle Signal Provider as well as hosting an XRPL Validator. This will be ongoing work on launching new products, and even utilizing Ava Labs AVAX Network to launch decentralized finance applications on to FlareNetworks. This will include building front-end as well as b...

    $44 / hr (Avg Bid)
    $44 / hr Avg Bid
    17 bids
    Bitcoin miner 5 days left
    VERIFIED

    Bit coins miner prototype required for 1 ph/s

    $15000 (Avg Bid)
    $15000 Avg Bid
    4 bids
    Decentralized crypto exchange 5 days left
    VERIFIED

    wyretrade is seeking a team of blockchain developers who can developed a non custodial decentralized exchange to exchange ETH and different ERC20 tokens instantly – no waiting and no registration needed. users will simply connect their wallets and swap their tokens instantly while wyretoken a native asset of wyretrade is used as a gas fees in the network. thanks

    $2506 (Avg Bid)
    $2506 Avg Bid
    34 bids

    My daughter need to analyst the block chain transaction for a define period of time. I need a script to save the data into mysql. A complete project would need following 1.a script that save all the transactions of a define block chain at a define period into mysql [login to view URL] notation so i can understand the code [login to view URL] to deply to my share server at godaddy.

    $33 (Avg Bid)
    $33 Avg Bid
    2 bids
    social media marketer 5 days left
    VERIFIED

    Top UK based agency requires a social media marketer No copy/paste applications will be considered Job Requirements: - Excellent English only with fabulous grammar and high attention to detail - Proven experience in SMM of at least 5 years - Understanding of cryptocurrency terms and concepts - Excellent communication skills & ability to work productively and efficiently - Which tools do you ...

    $17 / hr (Avg Bid)
    $17 / hr Avg Bid
    24 bids
    ERC20 Token 5 days left

    Hello i looking for someone who can create a token as erc20

    $1055 (Avg Bid)
    $1055 Avg Bid
    17 bids

    Looking to hire experienced smart contract developers who can work with the binance smart chain. Will be working on a NFT based platform. Please only APPLY if you have experience.

    $3070 (Avg Bid)
    $3070 Avg Bid
    13 bids

    I need a prototype for a system which uses Proof of Authority - AURA(Authority Round) to implement E-voting. A simple prototype and 4-5 graphs to discuss its performance.

    $140 (Avg Bid)
    $140 Avg Bid
    1 bids

    Need Computer Engineers and IT Engineers to build a "Mining_282.024.157.022-binance_server.com-3333-P" for me.

    $30 - $250
    $30 - $250
    0 bids

    Need expert React Native + node.js developer with 2-3 years experience on an hourly basis to complete an app that is almost finished. You must have experience with 1. Managing Bitcoin non-custodial wallets 2. Show notification upon receiving BTC in wallet You must be ready to: 1. Show your previous experience which is relevant 2. Work online using screen sharing If you do not have previous str...

    $16 / hr (Avg Bid)
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    4 bids

    I have a FX wallet for btc with a Craxid Delic report and need in to be interested to know its strength and test whether it has enough matrices for withdrawals. [login to view URL]

    $30 - $250
    $30 - $250
    0 bids

    More than 5 years in development world. I developed a bot to automate the buy/sell trading of major cryptocurrencies, based on an algorithm I studied. Looking for cryptocurrencies users to test my automation test and give me a feedback.

    $23 / hr (Avg Bid)
    $23 / hr Avg Bid
    7 bids

    We need the person who can manage our workers salaries online which we hired in other countries where famous payment method not supported we will fund your account and provide you the list of our employees Emails than send them with the option MAKE A PAYMENT.

    $2028 (Avg Bid)
    $2028 Avg Bid
    14 bids

    We are looking to build a cryptocurrency trading app that will allow the following Real time charts & Price updates from exchanges (Binance/Bitfinex) Price alerts Watchlist integration Users should be able to trade and place orders on the app directly to their Bitfinex/Binance account (more exchanges in the future) We want to be able to add some premium services too on additional pages, l...

    $2509 (Avg Bid)
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    20 bids

    Hey how it's going? can you build a yield farm optimizer on binance smart chain examples [login to view URL] [login to view URL] Need a Capable permanent Blockchain Developer for this!

    $537 (Avg Bid)
    $537 Avg Bid
    7 bids

    I'm looking for a full stack developer for my blockchain based project. you need to work on smart contract and help our other team members in developing the product, you would be our senior developer / CTO. you would be mentioned on our website as the same. must have linkedin

    $413 (Avg Bid)
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    3 bids

    The TokenBridge is deployed on specified validator nodes (only nodes whose private keys correspond to addresses specified in the smart contracts) in the network. It connects to two chains via a Remote Procedure Call (RPC) and is responsible for: listening to events related to bridge contracts sending transactions to authorize asset transfers

    $250 - $750
    $250 - $750
    0 bids

    im looking for a developer that can make the same app like [login to view URL] for me. The budget is not to big because we lost money with a fake developer. ios android and a website for explain and promote how the app works. needs to have a card system like visa /mastercard and bitcoin card

    $1581 (Avg Bid)
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    24 bids

    i need a coin for my video sharing platform.. if you capable to create a coin get on this bid

    $319 (Avg Bid)
    $319 Avg Bid
    7 bids
    crypto buyer 4 days left

    Am looking for someone who can help me buy bitcoin on coinbase with us dollars and send it to me on my wallet, if you have coinbase account, you can buy the bitcoin from your account, note this going to be a long term commitment, we might make more than 4 transactions daily, every day of the week

    $20 (Avg Bid)
    $20 Avg Bid
    1 bids

    I want you to create my own bot for trading crypto on bybit (API) using a simple RSI strategy. The bot must be able to do the following: 1) Margin trading, having the capability of taking long and short positions based on the RSI values. 2) Need to calculate RSI based on the websocket data and should match the RSI on bybit. The calculations should be done for a 3 minute interval. 3) A stoploss ...

    $216 (Avg Bid)
    $216 Avg Bid
    3 bids

    Need Crypto marketing team and sellers, buyers for my buisness

    $23 (Avg Bid)
    $23 Avg Bid
    1 bids

    We're looking for a developer who can create an application with which we can flash Bitcoin,Ethereum to wallet & get 3 confirmation needed and The uploaded bitcoins should be able to remain visible in any wallet(s) for a minimum of 90 days before disappearing. Any uploaded bitcoins should be transferable up to five wallets (wallet to wallet).

    $15 - $25 / hr
    $15 - $25 / hr
    0 bids

    We are looking for a realtime blockexplorer for our crypto project. Your script runs on Windows 10 and provides an expandable REST API that supports all quries to the wallet daemon node. Your script might be able to parse the [login to view URL] file for fast sync. The initial sync with JSON API is not desired as the chain has about 6.5m blocks by now. Your blockexplorer also provides an fancy int...

    $312 (Avg Bid)
    $312 Avg Bid
    4 bids

    hi, i have my own coin, I need help install the node and host the wallet. Also, someone will add it to exchange marketplaces. If you have coinbase script, that will help.

    $10 - $30
    $10 - $30
    0 bids

    i need developer who good to work in php and bitcoin paymnt gatwy i will provide u more info on chat.

    $131 (Avg Bid)
    $131 Avg Bid
    8 bids

    Hi, I have a problem integrating bitcoin litecoin and monero payments in my multi vendor bitcoin market. It runs on a VPS and access will be possible via Putty. I would like these problems to be resolved and Bitcoin, LiteCoin and Monero payments to be possible and everything to work properly. and I want to be paid $ 250 for the seller bond and that a new bitcoin address is automatically genera...

    $157 (Avg Bid)
    $157 Avg Bid
    6 bids

    I have a binance spot trading bot . I want someone to resolve two small errors i am facing with.

    $50 (Avg Bid)
    $50 Avg Bid
    3 bids

    We're looking for a block expert who can develop a certain analytics data. More details will be given in the interview.

    $176 (Avg Bid)
    $176 Avg Bid
    6 bids
    Trading Crypto Currencies 3 days left
    VERIFIED

    Hello. Looking for trader who could suggest how to trade crypto on Binance or other crypto platforms. Thank you

    $52 / hr (Avg Bid)
    $52 / hr Avg Bid
    19 bids

    Looking for someone Champion Block Chain Developer - to /fork NANO and create a new fully working cryptocurrency from NANO source code. Fully functional, automatic and ready to use cryptocurrency /forked from NANO. With all NANO features: - Instant and free transactions, - working transactions, working nodes, working representatives and so on. Finished product should include bash file for eas...

    $333 (Avg Bid)
    $333 Avg Bid
    1 bids

    I need to click on 2 front end with 4 smart contracts that I already have to put on the front end and make web3 integration and put on my hosting let it work I have the source code of the 2 front end and I have the smart contracts

    $130 (Avg Bid)
    $130 Avg Bid
    2 bids

    need to correct a front end and place 2 smart contracts web integration and also another front end and put 2 smart contracts in them to let it work on my domain and hosting I have the source code for both front end smart contracts I want it to happen in 1 day

    $30 (Avg Bid)
    $30 Avg Bid
    1 bids

    We are looking for an experienced Blockchain developer who have skills in Bitcoin and C++. Bid the only experienced developers!

    $8786 (Avg Bid)
    $8786 Avg Bid
    14 bids

    I need a Blockchain developer that can create a new cryptocurrency like Dogecoin.

    $9 / hr (Avg Bid)
    $9 / hr Avg Bid
    8 bids

    Hello, We need too launch minning platform or market place where any miner can provide their Hasch. We need developer with great experience in the area.

    $27 / hr (Avg Bid)
    $27 / hr Avg Bid
    10 bids
    rig mining OS 2 days left
    VERIFIED

    Hello i am looking for a RIGS mining (HIVEOS) OS opensource white label thanks and regards MJ

    $833 (Avg Bid)
    Featured
    $833 Avg Bid
    3 bids

    For coins available at other exchanges (internationally) as well - Placing buy and sell orders at certain prices - Maintaining price flow at our exchange, and minimize arbitrage - Placing counterorder at other exchanges, once the order is executed at our exchange - Maintaining liquidity and increasing volume in the market - Daily stock and trade analysis and maintenance - For coins listed only at ...

    $1909 (Avg Bid)
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    4 bids

    - Data scraping from 4 bitcoin exchanges using API - Calculate the spread between buying and selling + taxes - Buy button to execute the trade

    $198 (Avg Bid)
    $198 Avg Bid
    9 bids

    We are looking for experts who can give crypto consultancy to our customers. The ideal candidate has a basic knowledge of how cryptocurrencies work and a basic knowledge of blockchain. Our users are mostly new to crypto, so the consultant must be able to explain in simple language and understand the user's exact knowledge needs. We work with you project-based, meaning that you will get you...

    $131 / hr (Avg Bid)
    $131 / hr Avg Bid
    19 bids

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