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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. Contratar a Blockchain Developers

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    43 trabajados encontrados, precios en USD

    Develop a smart contract for our token. It must have the following features. (Add new coins when ever needed) (Flexible token supply) (Whitelist and blacklist wallet addresses) (Receiving the tokens back) Many stable coins smart contracts are open sourced.

    $750 (Avg Bid)
    $750 Oferta Promedio
    3 ofertas

    i want it fast and easy i will give u alll the details can we start

    $37 / hr (Avg Bid)
    $37 / hr Oferta Promedio
    2 ofertas

    We have blockchain project and require experienced developers to help us. Please share your experience, time and cost for previous projects. We are looking for long term cooperation and more projects are coming.

    $638 (Avg Bid)
    $638 Oferta Promedio
    9 ofertas

    I want create windows and Linux wallet for my own crypto POW/POS, and beside the wallets the instructions and steps to do in PDF file. I will accept the lowest price.

    $403 (Avg Bid)
    $403 Oferta Promedio
    8 ofertas
    Develop a bitcoin wallet 6 días left
    VERIFICADO

    i need to develop a quick 2 page btc wallet application, with send and received feature. Please let me know if u can get this done. You could use [iniciar sesión para ver URL] API service or the BTC client web service

    $22 / hr (Avg Bid)
    $22 / hr Oferta Promedio
    22 ofertas
    Smart contract - block Chain 5 días left
    VERIFICADO

    Block chain expert with expertise in solidity, as part of the elimination process, a simple smart contract has to be written, less than 20 lines, The project is for an agricultural market place, the developer should be able to write a few lines with a smart contract for an agricultural market place, where people can buy and sell products e.g. Coffee, Fish, Irish Potatoes, Beef. Failure to provide ...

    $2280 (Avg Bid)
    $2280 Oferta Promedio
    29 ofertas

    ERC20 token listing with low budget.

    $871 (Avg Bid)
    $871 Oferta Promedio
    13 ofertas

    we are looking for smart contract developers having good knowledge of solidity language to compile and deploy contracts and use web3 to get it done on front end

    $50 (Avg Bid)
    $50 Oferta Promedio
    4 ofertas
    bond issue using blockchain 5 días left
    VERIFICADO

    A token will be offered for each $1 of bonds issued by the project. There will be [$20-30] million of token initially issued for the first transaction, out of a total of [$1 billion] for the program. The bond thus issued will be registered in Singapore and listed on the SGX exchange. The SEED token is an ERC20 token distributed on the Ethereum blockchain through a mechanism of an ST20 Smart Contra...

    $23 / hr (Avg Bid)
    $23 / hr Oferta Promedio
    16 ofertas

    Need investors for new crypto project Pre sale aventage price whit 60% bonus

    $476 (Avg Bid)
    $476 Oferta Promedio
    6 ofertas

    Looking for someone with experience in Cryptocurrency to upgrade a existing older coded wallet to most current software. GitHub link for the coins current wallet based on old 2014 code [iniciar sesión para ver URL] If you feel you have the ability to update the current code and also can implement merged mining to the code and also help secure the blockchain please review the source and cont...

    $690 (Avg Bid)
    $690 Oferta Promedio
    21 ofertas

    VGORisky’s goal/aim is to provide a secure and fun gambling service based around the use of crypto collectables, more specific VGO collectables. We aim to provide three main game modes, Jackpot, Coinflip and Case opening. The site will use 4 main API’s, these 4 API’s will be for users access and for the sites functions, the 4 API’s are: • VGO Vcase • OPSkins Logi...

    $1745 (Avg Bid)
    $1745 Oferta Promedio
    11 ofertas

    I need Bitcoin Node to be installed with API key. The whole server must be install securely and should be penetrate able. Server must run a full node with API access. API must be use able to create/generate new wallet addresses, Node must be able to send and receive payments, Node must be automatically transferring funds from node wallet to a cold / hardware wallet. Server must be protected agains...

    $388 (Avg Bid)
    $388 Oferta Promedio
    8 ofertas

    We are looking for someone with a lot of experience with blockchain and wallets. We are looking for someone that can update the entire wallets UI and add additional features such as a graph, seed key. Ideally looking for around the 500-600$

    $588 (Avg Bid)
    $588 Oferta Promedio
    17 ofertas
    Install Exchange Dex 4 días left
    VERIFICADO

    Exchange Decentralized for btc, ltc and Eth and ERC20 standar complete web - Backend admin - Users account Developer must deliver lenguage programming language, all features and functions, and description complete of installation and technical sheet of the whole installation

    $2028 (Avg Bid)
    $2028 Oferta Promedio
    25 ofertas

    I am looking for Co founders blockchain programmer and ICO specialist to start new project

    $19 (Avg Bid)
    $19 Oferta Promedio
    5 ofertas

    I would be willing to make the people stock holders and partners in the company. They would have continuous income for life. The tech involved is very guarded contracts and interviews. has real world application and will be adopted quite fast. Relocation may be a must. is truly a game changer.

    $948818890 (Avg Bid)
    $948818890 Oferta Promedio
    23 ofertas

    We need an ICO Wallet that works on Ethereum Smart-Contract

    $347 (Avg Bid)
    $347 Oferta Promedio
    21 ofertas

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    $1273 (Avg Bid)
    $1273 Oferta Promedio
    35 ofertas
    Bitcoin jackpot site 3 días left
    VERIFICADO

    Looking for partner (paid small amount while working and then site revanue) I want a bitcoin jackpot site (script) Players register and deposit btc. They then ret credit on the site to use in the jackpot. Jackpot is timed so Player can join in and try win the pot. Site profit is 10% of each played game. Dont reply of you havent read it all. Dont reply og you dont Know what bustabit crash gam...

    $91 (Avg Bid)
    $91 Oferta Promedio
    4 ofertas

    Here Its Example How Should Look And Should Be The Exchange The UI/UX Check Website Before Bid if u can make like this okay : [iniciar sesión para ver URL]

    $4617 (Avg Bid)
    $4617 Oferta Promedio
    40 ofertas

    I need to generate new genesis block insted of current one for POW/POS cryptocurrency, with new vAlertPubKey and scriptPubKey all instruction and steps should be include. award will be according to best price

    $180 (Avg Bid)
    $180 Oferta Promedio
    8 ofertas

    We are looking for Ethereum Smart Contract developers who has god grip on Solidity language to write contracts and trigger events

    $62 (Avg Bid)
    $62 Oferta Promedio
    4 ofertas
    Build a Mining Pool Website -- 2 3 días left
    VERIFICADO

    Build a Mining Pool Website Like [iniciar sesión para ver URL] [iniciar sesión para ver URL]

    $151 (Avg Bid)
    $151 Oferta Promedio
    8 ofertas
    crypto exchange 3 días left

    Hello! I need a script crypto exchange, just looking for a ready solution. Before buying, I need to watch a demo! I do not need to develop from scratch, such a proposal please do not write to me!

    $1406 (Avg Bid)
    $1406 Oferta Promedio
    44 ofertas
    Blockchain expert 3 días left

    I am looking for ocaml blockchain expert

    $681 (Avg Bid)
    $681 Oferta Promedio
    24 ofertas

    Section 1: Final points to be verify and fix if any issues 1) SMTP to API for email via [iniciar sesión para ver URL] api 2) Email and SMS notification alert for message from trade related 3) Validations in Register page 4) Multiple user session lock 5) Session Hijacking 6) Update mobile no otp verification 7)Sign In link expire on click for sign in 8) Ledger proper in User and Admin Dashbo...

    $39 (Avg Bid)
    $39 Oferta Promedio
    1 ofertas

    Hello. I am looking for experienced oclam developer. Have to know blockchain, prototcols, c++.

    $607 (Avg Bid)
    $607 Oferta Promedio
    23 ofertas

    I'm trying to modify pool codes in a mining pool using SHA 256 and redeem the hashes in another coins . Basically my device only process SHA 256 but wondering if we could program the pool to convert the algorithm ? please contact me if you have experience in this filed. my method of payment is by creating milestones and release it once the task was completed . had lots of good reviews so far...

    $461 (Avg Bid)
    $461 Oferta Promedio
    15 ofertas

    A blockchain engagement platform designed to be a nexus for blockchain education, networking, enterprise collaboration and talent discovery. It is a six month project with a fixed pay every month.

    $2813 (Avg Bid)
    $2813 Oferta Promedio
    14 ofertas

    Building supply chain management using blockchain for super market

    $27 / hr (Avg Bid)
    $27 / hr Oferta Promedio
    19 ofertas

    ERC20 token listing with 1 - 2 eth budget.

    $525 (Avg Bid)
    $525 Oferta Promedio
    26 ofertas

    hello! we are looking for people who can get us a decentralized crypto exchange you can looking at this website [iniciar sesión para ver URL]

    $2169 (Avg Bid)
    $2169 Oferta Promedio
    14 ofertas
    cryptocurrency 2 días left
    VERIFICADO

    i want to create a cryptocurrency for payment.

    $741 (Avg Bid)
    $741 Oferta Promedio
    25 ofertas

    I'm fonder of ALFASSA ( [iniciar sesión para ver URL] ) and I need a BlockChain's programmers

    $8564 (Avg Bid)
    $8564 Oferta Promedio
    24 ofertas

    I am looking for a blockchain developer experienced in setting up Electrum wallets. Project's description and features is attached.

    $331 (Avg Bid)
    $331 Oferta Promedio
    11 ofertas

    Hi. I am going to develop new blockchain. I will share details for right freelancer.

    $1128 (Avg Bid)
    $1128 Oferta Promedio
    35 ofertas
    Needed ERC20 token Service 1 día left
    VERIFICADO

    We need ERC20 token Service Developer. We are looking for a highly skilled developer who can provide us ERC20 Services. We are looking for • Get Balance • Token Send/Receive • Token Address Generation • Transaction History Please Note: • You will need to handover the full development source code to us. • Should be developed with PHP CodeIgniter. • We need the se...

    $543 (Avg Bid)
    $543 Oferta Promedio
    18 ofertas

    1. Create a masternode coin like pivx 2. Create block explorer 3. Create QT wallets ( Win - 32-64, Linux, Mac ) 4. Publishing source code in github [iniciar sesión para ver URL] masternode guide 6. guide to install the seednode Please note : I require only professional developers , I will first check if the coin chain is smooth or not I mean no bugs in the coin or proof of stake

    $994 (Avg Bid)
    $994 Oferta Promedio
    11 ofertas

    We need to develop and execute a training program in Blockchain

    $525 (Avg Bid)
    $525 Oferta Promedio
    13 ofertas

    Looking to get an app built on the EOS blockchain that allows riders to receive tokens for their driving service similar to UBER in the Cleveland area. Must have understanding of GPS.

    $4374 (Avg Bid)
    $4374 Oferta Promedio
    27 ofertas
    Cleveland, Ohio EOS Uber App Final left
    VERIFICADO

    Looking to get an app built on the EOS blockchain that allows riders to receive tokens for their driving service similar to UBER in the Cleveland area. Must have understanding of GPS.

    $2370 (Avg Bid)
    $2370 Oferta Promedio
    15 ofertas
    Create a new Crypto Currency 13 días left
    VERIFICADO

    Create a new Crypto Currency by Improving open source existing codes and ensure its reliability to connect to external environments, and implement sepcific specs and deliverables and high level security.

    $3393 - $5654
    Destacado Sellado Acuerdo de Confidencialidad
    $3393 - $5654
    65 ofertas