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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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    34 trabajados encontrados, precios en USD

    Looking for someone who has a good knowledge in blockchain technologies

    $259 (Avg Bid)
    $259 Oferta Promedio
    2 ofertas

    This is completely decentralized. Users must be approved with kyc before trading. Each asset has a full page with info, logo and links etc that can be added via admin panel. Companies must apply to be listed and I can add them via admin panel when approved. Transaction fees are 0.1% of each trade to go to admin. Each token will be 0.00000001 as default when listed and this is the lowest amount tha...

    $1914 (Avg Bid)
    $1914 Oferta Promedio
    25 ofertas

    I Want a new bitcoin wallet where a public and private key is generated for each address similar to a pgp key. The bitcoin address will be complete encrypted in a pgp style format so users will pay into the public key or wrong code that gets generated for it. This key can have a condensed version also that can be passed around as an address. The idea behind this is to add extra security and privac...

    $414 (Avg Bid)
    $414 Oferta Promedio
    7 ofertas
    Modify my ethereum blockchain 6 días left
    VERIFICADO

    I have a simple stable coin that i want some functions added. Also improvement on the UI

    $539 (Avg Bid)
    $539 Oferta Promedio
    32 ofertas

    I need create payment gateway on my site, it must works with blockchain API, user send money -> 2 confirmations -> user receive money on site (virtual money,coins)

    $182 (Avg Bid)
    $182 Oferta Promedio
    15 ofertas

    Hello, We looking for an expert on javascript for work on blockchain domain part. ( daemon, coins, api, etc ) with javascript and node.js some more detail : [iniciar sesión para ver URL] [iniciar sesión para ver URL] Detail about the hire: - full time needed - payment weekly or monthly - ready to start now if you ready. Thx you.

    $8 / hr (Avg Bid)
    $8 / hr Oferta Promedio
    23 ofertas

    We are looking for AFFILIATE MARKETERS that understand the CPA MODEL. ONLY CPA!!!!!! NO-Downpayment! NO-Advance Payment! NO-Posting Payment! Our Blockchain TO project is kicking-off the second stage of its development. For this, we need capable, competent affiliates to market our service across multiple platforms and Drive to our platform, Users that Convert. CONDITIONS: - We do NOT pay any ad...

    $8955 (Avg Bid)
    $8955 Oferta Promedio
    6 ofertas
    Build me a website 5 días left
    VERIFICADO

    A digital asset company looking for someone to finish of designing website for crypto currency. Asap

    $54 (Avg Bid)
    $54 Oferta Promedio
    29 ofertas

    I need to deploy and maintain a crypto exchange based on open source crypto exchange Peatio OpenDax Openware Rubykube

    $535 (Avg Bid)
    $535 Oferta Promedio
    7 ofertas
    Create an erc20 token 5 días left
    VERIFICADO

    Just need a specific erc20 token created

    $218 (Avg Bid)
    $218 Oferta Promedio
    11 ofertas

    Need an expert with experience in Bitcoin, Blockchain Coding Expert

    $43 (Avg Bid)
    $43 Oferta Promedio
    8 ofertas
    Blockchain Token Transfer Software 4 días left
    VERIFICADO

    Seeking to create software that enables auto transfers of tokens inside wallet. TRON Blockchain Must be familiar with development on Tron (Solidity)

    $414 (Avg Bid)
    $414 Oferta Promedio
    8 ofertas

    i need signals when volume+/- %, when price +/- %, indicators RSI when on n level, when ma 20/50/200 candle cross on D maybe u have some ready to work can share as well ur idea

    $210 (Avg Bid)
    $210 Oferta Promedio
    6 ofertas
    Ethereum Blockchain Project 4 días left
    VERIFICADO

    I am looking for someone who can implement an Ethereum Blockchainproject. It is about virtual trading cards that are stored as Non-Fungible Tokens in the blockchain. Important is experience in the blockchain and Ethereum.

    $741 (Avg Bid)
    $741 Oferta Promedio
    19 ofertas
    Looking for 3 días left

    I will be helping you to generate business by proving leads that are interested in Blockchain Development, Mobile app development and Website design/development. Note: I am looking for one good partner who is ready to pay high rates for the quality leads. We will provide 5-7 quality leads every week.

    $165 (Avg Bid)
    $165 Oferta Promedio
    7 ofertas

    I really don't understand anything about blockchain. The result we want is to save accounting information with this tool. such as [iniciar sesión para ver URL] I have a sheet in Excel with data, that data is true and we want to certify / tokenize it in blockchain. If you are expert in this field, please send me your proposal for this. Thanks

    $1464 (Avg Bid)
    $1464 Oferta Promedio
    31 ofertas

    You have been provided with a wallet and a blockchain with a genesis block similar to the following (this is an example for illustration): http://foley.gold.ac. uk/cw20/api/cw1/887766554. The genesis block contains one special transaction that does not have any inputs, and which gives you 100 coins. The genesis block is a special block, being the first one, its reference to the hash of the previou...

    $122 (Avg Bid)
    $122 Oferta Promedio
    2 ofertas

    Building a platform for buyers and sellers to trade carbon credits on blockchain. Preferred platform would be Multichain.

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

    Need a person who expert in find the private key of blockchain imported adress.

    $937 (Avg Bid)
    $937 Oferta Promedio
    4 ofertas

    Hi All, This is complicated one. What I'm looking to do is create a ERC-20 token (that part I can do myself) and then issue them in the form of customisable gift cards which also act as a hardware crypto wallet. These tokens will be pegged to the Euro and what I want to do then if offer the cardholder 2 options: 1.) Redeem the resell the token back to my website at a rate of 0.95 (ie. for e...

    $1696 (Avg Bid)
    $1696 Oferta Promedio
    14 ofertas
    Peer to peer crypto exchange 2 días left
    VERIFICADO

    Want a dev to join our team and develop a crypto exchange in our ongoing app project. Main function will just be work on the cryptos exchange section

    $986 (Avg Bid)
    $986 Oferta Promedio
    27 ofertas

    I Have A Businesas And I Want To Setup Online Payment Gateway For My Business...

    $1144 (Avg Bid)
    $1144 Oferta Promedio
    13 ofertas

    we need to develop a blockchain with POS algorithm with Master Node functionality. Similar to Dash or PIVX Bid only if: you have developed such coin in last (verifiable link mandatory) have at least one year of proven experience in blockchain development. it is an urgent project to bid only if you can start within 72 hours. make sure you don't copy paste your proposal. if you have till he...

    $420 (Avg Bid)
    $420 Oferta Promedio
    6 ofertas

    NO TIME WASTER PLEASE Provide details information about the your portfolio and mentioned functionality step-wise. Will check your project and will share the project requirements to selected freelancer/agencies. Note Again: NO TIME WASTER PLEASE

    $4040 (Avg Bid)
    $4040 Oferta Promedio
    15 ofertas

    Hello, In way to run an new service in crypto domain, like an web wallet who allow each user to download an control the private key, we need an expert on crypto dopain / blockchain for create this new service. Quick brief : for sample with PIVX COIN User able to : - create wallet - send and receive coin - check transaction history - download the privatekey locally. for reduce all risk of hack...

    $567 (Avg Bid)
    $567 Oferta Promedio
    24 ofertas
    ECDSA Project 1 día left
    VERIFICADO

    Simulate a blockchain (encrypted with ECDSA) with two transactions, preferably using the Java's Bouncy Castle (but other languages are acceptable too). The output should be a JSON containing the transaction and block hash, signature and other transaction details. Requirements can be found in the word document attached.

    $77 (Avg Bid)
    $77 Oferta Promedio
    5 ofertas

    We are building decentralized delivery app for food/medicine delivery. This will be hybrid of Uber + grubhub which will be decentralized usnig blockchain powered by AI . We plan to test this MVP in 3 months in US markets..We need to build smart contracts, tokens and power the prediction/optimization of route for next pickup/drop. We are planning drone delivery for remote locations.

    $4999 (Avg Bid)
    $4999 Oferta Promedio
    30 ofertas

    Anchors are entities that people trust to hold their deposits and issue credits into the Stellar network for those deposits. All money transactions in the Stellar network (except lumens) occur in the form of credit issued by anchors, so anchors act as a bridge between existing currencies and the Stellar network. Using the Stellar protocol, 2 organizations transacting together agree to use a sta...

    $185 (Avg Bid)
    $185 Oferta Promedio
    8 ofertas
    Blockchain dev in unity 1 día left
    VERIFICADO

    Experienced Blockchain developer in Unity3d . Urgent requirement. Kindly contact only if u experinced in integrating blockchai in unity

    $406 (Avg Bid)
    $406 Oferta Promedio
    3 ofertas

    [iniciar sesión para ver URL] automated payment gateway for my website

    $179 (Avg Bid)
    $179 Oferta Promedio
    14 ofertas

    I would add the following features: I need to develop a payment gateway with blockchain, so that users can buy and exchange payments and also being able to do transactions at events and points of sale through a Rfid bracelet connected to their app. I want to be able to release transactions on the wallet like cash app and use the bracelet for events, points of sale, etc with blockchain. like the l...

    $724 (Avg Bid)
    $724 Oferta Promedio
    21 ofertas

    We need experienced telegram channel moderators/admins than can take this tasks a team, a agency or a very highly group of people that are willing to come in withtheir experience and join forces to take on a few telegram channels. 24/7 community managers Internal & External FAQ Anti-spam & anti-phishing Feedback gathering Encouraging activities Introducing partnerships, events, news C...

    $232 (Avg Bid)
    $232 Oferta Promedio
    8 ofertas

    I'm having a simple custom libra token implementation having some simple parser errors and need someone to help me to debug those errors.

    $38 / hr (Avg Bid)
    $38 / hr Oferta Promedio
    2 ofertas
    Blockchain Training 2 horas left
    VERIFICADO

    Hi I am looking for someone who can provide a training on block chain. Anyone with experience and good command over English can approach

    $5 / hr (Avg Bid)
    $5 / hr Oferta Promedio
    7 ofertas