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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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    38 jobber funnet, priser i USD

    I want someone that has a good knowledge of bitcoin and altcoin mining, I want to mine crypto coin like ethereum or bitcoin using my laptop and with high hashrate.

    $220 (Avg Bid)
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    2 bud

    I'm looking for someone who can show me how to purchase with Bitcoin on a website called Ojooo. I don't know how to pay with Bit coin and that is their only method of payment.

    $10 (Avg Bid)
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    1 bud

    I have an old peercoin forked cryptocurrency. I need to upgrade into the new version of the peercoin. I need a high skilled full-stack developer in cryptocurrency development. Don't forget to write "PeerCoin Dev" on the top of your proposal. Cheers, happy bidding. @Gary

    $23 / hr (Avg Bid)
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    8 bud

    need a peer 2 peer marketplace where people can register and buy/sell items.

    $662 (Avg Bid)
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    9 bud

    Hello, I have YIIMP mining pool running. I need help to configure litecoin daemon. The daemon are running but yiimp gives me two errors. Please help me with this. Errors are: RPC Error: error -8: label argument must be a valid label name or "*". And: error -8: getblocktemplate must be called with the segwit rule set (call with {"rules": ["segwit"]})

    $295 (Avg Bid)
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    1 bud

    I am going to integrate the coin payment on my cazino game site. so users can deposit the money on own account. [logg inn for å se URL] please check this api. only bid freelancer who has been worked with this api. And please provide the previous work with this api.

    $20 / hr (Avg Bid)
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    here is social network that is being added to my domain: [logg inn for å se URL] code: [logg inn for å se URL] I would like the site to be a social network where people (models) can each have an account and people can pay per minute to video chat. Each model will have their own profile page where they can ad updates, pics, images etc. Only models will have the option to video chat...

    $802 (Avg Bid)
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    We need a script for e currancy exchnage description below in some points 1: Dashboard 2: Multicurrancy Wallet (USD, GBP, Bitcoin Etc.....) 3: ADD,Withdrawal,Send Money 4: Assign Virtual Card only use On our platforms 5: Deposit,Withdrawal and Send Money Automation 6: Escrow Service 7: KYC Verification System 8: 2FA Verification On Login And Registration 9: Bonus Program 10: Live Chat Management ...

    $2906 (Avg Bid)
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    21 bud

    We are looking to create a ERC884 token that can be traded on ETH network. This is a test project and will require to abide by the standards of the Delaware Corporate Law as described in [logg inn for å se URL]

    $210 (Avg Bid)
    $210 Snitt bud
    4 bud

    I need to run services to provide an cryptocurrency wallet as a service, need only to provide BTC , ETH , XRP , LTC XMR , DASH , DDKOIN wallet, concept like what exodus wallet but with a better nice ui design , need also function for change day and dark mode. The system must have a 2fa authenticator and biometric authentication for security purpose. and every account must have 12 phase code. Need ...

    $1382 (Avg Bid)
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    9 bud

    I'm looking for a PHP code to generate Litecoin and Dash addresses from XPUB. I currently have the code to generate Bitcoin addresses. This library supports other cryptocurrencies, including Dash and Litecoin.

    $216 (Avg Bid)
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    7 bud
    Dapp and Wallet and ico 4 dager left
    VERIFISERT

    we want a Dapp, wallet, and want to launch a coin. We prefer a simple UI trading platform. user can store their coin, buy and sell. the wallet also supports cash storing and transfer. I want something like www.binance.com. I know its complex, we don't need all features but security features and trading is needed. ios, android app, and web app.

    $773 (Avg Bid)
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    11 bud

    Looking for an experienced blockchain developer who understands the logic behind ERC-20 tokens. Requirements: - Create ERC-20 TOKEN - Create YIELD FARMING mechanism (google DeFi) - Create Smart Contracts - Maintain token integrity If you have experience in this field and have worked with other cryptocurrencies in the past or on projects relating to cryptocurrencies such as Bitcoin or Ethereum, ...

    $50 / hr (Avg Bid)
    $50 / hr Snitt bud
    14 bud

    Looking for an experienced blockchain developer who understands the logic behind ERC-20 tokens. Requirements: - Create ERC-20 TOKEN - Create YIELD FARMING mechanism (google DeFi) - Create Smart Contracts - Maintain token integrity If you have experience in this field and have worked with other cryptocurrencies in the past or on projects relating to cryptocurrencies such as Bitcoin or Ethereum, ...

    $5903 (Avg Bid)
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    19 bud
    Business development Bangladesh 4 dager left
    VERIFISERT

    Im looking for people that can bring me leads in Bangladesh of E exchangers (such as neteller, skrill, astropay, bitcoin).

    $162 (Avg Bid)
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    6 bud

    Hi, i am searching for some one who can help me to create an application wallet connected to a debit and credit card for spending cryptocurrency. To find out more, come talk to me! Thank you.

    $1014 (Avg Bid)
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    We are a team from young to mature population with various experiences in the world of cryptocurrencies and blockchain…. We are at an early stage with our ICO project the project is currently in the process early pre-sale phase… we are inviting all crypto enthusiasts who are willing to participate in the project in the manner of advertising or invitations with referral codes&helli...

    $17 / hr (Avg Bid)
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    Ethereum Smart Contract 3 dager left
    VERIFISERT

    Ethereum contracts with the following requirements: 1. ERC-20 Token based on OpenZeppelin contracts. The token has a fixed supply and is non-mintable. 2. A vesting contract, also from Openzeppelin. Allows lockup of the ERC-20 token for a given timeframe and linear unlocking. 3. A contract that allows holders of the ERC-20 token in Contract 1. to transfer any ERC-20 token without paying gas. The...

    $240 (Avg Bid)
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    Develop and deploy a Market Making bot on Loopring (DEX) - using Binance or MXC orderbook/mid price (as source of truth). - Bot should be able to react within sub 200 ms on price/ spread changes on Binance or MXC ond post/cancel orders on Loopring - Bot would need some sort of liquidity management (E.g. if we run low on a token we would up the bid/ask in order to buy the tokens back) Not a primar...

    $528 (Avg Bid)
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    We are launching a DEFI protocol and token in a few days and we are Looking for entry to expert level community management and various marketing specialists to help with our launch. The Ethereum DEFI product will be launched unto Ethereum Mainnet within a period under 2 weeks. The product is a first in its class combining lending with MMO gaming with underlying gamified DEFI protocol token to ...

    $1250 (Avg Bid)
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    Create an secure wallet for Ethereum & Bitcoin .

    $180 (Avg Bid)
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    we need a blockchain developer to create a staking platform with lending option. using ethereum blockchain. we need similar platform like lend and harmony. ( these are crypto projects) if you are a blockchain developer. please reply and text this code (cryptostake99)

    $208 (Avg Bid)
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    I need some bitcoin balance in my wallet..is there anyone can transfer bitcoin worth $70 I ll pay $100 to him/her. BID PRICE $100

    $107 (Avg Bid)
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    4 bud
    smart contract on for tron -- 2 2 dager left
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    Hi i am looking for a developer who can create smart contract on traon ( for invenstment purpose) not for token [logg inn for å se URL] this type of smart contract. apply with tron word only

    $134 (Avg Bid)
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    3 bud

    Create an secure online btc or eth wallet for me !

    $50 (Avg Bid)
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    Bitcoin Dev ! 1 dag left

    Create an secure online btc or eth wallet for me !

    $273 (Avg Bid)
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    6 bud
    Add stocks to Crypto Platform ! 1 dag left
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    Hello Everyone, I got a cryptocurrency platform it has charts options to trade all types of cryptocurrencies. I need to add STOCKS to it!!! Here is my platform... [logg inn for å se URL] [logg inn for å se URL] I want to include these Major Indices from this site [logg inn for å se URL] I want to add also these Top 50 Companies Stocks

    $629 (Avg Bid)
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    I am looking for a skillful online/field marketer with adequate knowledge of bitcoin and other crypto currency for immediate contract

    $1074 (Avg Bid)
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    12 bud
    smart contract on for tron 1 dag left
    VERIFISERT

    Hi i am looking for a developer who can create smart contract on traon ( for invenstment purpose) not for token [logg inn for å se URL] this type of smart contract. apply with tron word only

    $20 - $167
    Forseglet Taushetspliktsavtale
    $20 - $167
    1 bud

    I know how to create a custom stellar token it takes like 10 minutes or so , i can provide quantity token symbol and token name and will give you logo for it and also base stellar i.e 75+75 for issue and distribution account so that you can make the token public.

    $25 (Avg Bid)
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    I need a person who can create a cryptocurrency. A huge project is being created and cryptocurrency is needed for it. We are waiting for your suggestions.

    $6437 (Avg Bid)
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    27 bud
    bitcoin fork 1 dag left
    VERIFISERT

    new cryptocurrency software. It will be done with a bitcoin fork.

    $667 (Avg Bid)
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    I need python expert to create a software for me, the software can detect the transaction then auto buy and sell in uniswap, this is the uniswap python doc [logg inn for å se URL], I have also a API to detect transaction, actually this is a bot, please bid only expert, type "Python expert" in your bid so I know your reading and not and spam.

    $126 (Avg Bid)
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    We have full node running, working fine, we used to send transactions in 1-2 seconds, now it is talking 8 seconds. Our [logg inn for å se URL] file is around 1.1 GB. Now How can you help to speedup the BTC sending payments, if you have such experience let's connect. I need working file in php to do transaction and I will verify if it will send transactions in 1-2 seconds as before.

    $140 (Avg Bid)
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    1 bud

    I want a full service bitcoin wallet and merchant service with all the features if Bitpay or [logg inn for å se URL] with bitcoin as the only source for payment. I need anybody to be able to accept payments using this platform without having to apply for a merchant account. Easy to use copy and paste merchant embed code into a users website is a must as well as more complicated shopping cart...

    $2463 (Avg Bid)
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    I need a custom bustabit betting script. I have a current one attached that is very basic. I dont want a martingale. I want the bets to go up 2 units when I lose and down 1 unit when i win. This will continue until I am in profit even 1 bit more than when I was at the start of the sequence. It will restart at the base bet every time it is in profit.

    $85 (Avg Bid)
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    2 bud
    Help with RubyKube Peatio 4 dager left
    VERIFISERT

    Hi, I am looking for someone to Install rubykube opensource software on a server and make a few customizations. Add in Fiat support with API Add Cardano as an extra cryptocurrency on the exchange.

    $1612 (Avg Bid)
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    Please do not launch proposals without reading and understanding the entire content of this work! IOS and Android Trust Wallet code link: [logg inn for å se URL] Link of desktop wallet LQX Coin: [logg inn for å se URL] (linux) [logg inn for å se URL] (windows) The basic manual for compiling and deploying the application for Android and IOS must be prepared Scope: 0. Add the...

    $189 (Avg Bid)
    Omtalt
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    5 bud

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