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blockchain

€5000-10000 EUR

Closed
Posted almost 4 years ago

€5000-10000 EUR

Paid on delivery
We are looking for some developer to develop a bitcoin client, with the feature to send fake transactions to the chain. All we need is for the transaction to be shown in the [login to view URL], obviously we don't expect them to ever get confirmed! Required: - Amount field - Bitcoin address field. Can be a desktop (windows/linux) based solution, or on web. Skills: Bitcoin, Blockchain, Linux, PHP, Software Architecture
Project ID: 24835078

About the project

16 proposals
Remote project
Active 4 yrs ago

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16 freelancers are bidding on average €9,673 EUR for this job
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Hello, We are IT-Engineers and Business Analysts, creating complete web and mobile solutions, for already more than 15 years, supporting our products with custom digital marketing strategies and instruments. Before the collaboration starts - the initial briefing round takes place, which is free of charge. We are interested in all the details of your specific case. They will allow us to obtain a better vision of your concept and help us create unique solutions for you. Let's schedule a convenient time for the first kick-off conversation. Best Regards, Andrei Costenco Team Lead, Business Analyst, Senior Engineer Dev Experts Team P.S.: Wir sprechen auch Deutsch. ;)
€10,000 EUR in 30 days
5.0 (140 reviews)
9.0
9.0
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We already read your project. (blockchain) Key Skills: Software Architecture, MySQL, Website Design, PHP and Linux In order to help you more, I would need you to give me more information about your project.
€10,410 EUR in 9 days
4.8 (226 reviews)
8.3
8.3
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Hi, I have read the brief details on the job listing. I am a full stack developer with 9 years of coding experience. I have worked with multiple similar jobs before. I have completed 150+ major projects just on this website in last 5 years. Apart from that I have a good team of developers for doing web based jobs of any kind. You can check my portfolio here: https://www.freelancer.com/u/AwaisChaudhry?w=f I believe I can do this job. Lets discuss ! Awais
€10,000 EUR in 16 days
4.9 (94 reviews)
8.0
8.0
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Hi there! My name is Orestes and I am a Software Engineer with specialty in Java (Spring Framework) and PHP (Laravel Framework). I represent a whole team of software engineers (so our language stack is actually quite big: Java, PHP, C#, Javascript, Python among others) that have undertaken too many projects in the past (including Web / Desktop Applications, Web Services, RESTful APIs, Game Development etc) so I can guarantee that you (and your project) are in safe hands with us! :) I would like to state that even though your description has given us a basic idea for the project, I still have some questions and need to discuss with you in order to clarify some of the details. That is why the price of my bid is yet to be discussed and we can decide on a fair price for you and for us! Feel free to get in touch! Orestes
€10,915 EUR in 14 days
5.0 (11 reviews)
6.8
6.8
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Hello. How are you today? I've read your job post carefully. This job really attracts me and also your required skills are completely matched with my major skills. I have good knowledge and rich experience with it. I built many websites by using this so it will be an easier and suitable job for me, I think. Mainly I want a long term relationship with you after this job. As you can see on my profile, I have been working as a full stack developer of over 6 years and is specialized in PHP, Mobile Applications , JS frameworks and libraries and so on. I received good reputations from clients with their successful jobs. So once you hire me, I can start working immediately and can finish as you want.
€7,500 EUR in 7 days
4.5 (49 reviews)
6.6
6.6
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Hello I have done a similar project before(blockchain project). Knowing what you want and so I am interested in and I am confident in your project. We can discuss this more via chat. Thanks for reading. Daniel Ramos Garcia.
€7,500 EUR in 70 days
5.0 (24 reviews)
6.1
6.1
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Hello how are you? I have great experience in developing simple, positioned and triangular arbitrage bots using cryptocurrencies, in addition to developing centralized and decentralized exchanges, using artificial intelligence to forecast stock and cryptocurrency prices, among other technical knowledge that can be useful in this project . Contact us for more information. Thanks.
€5,000 EUR in 7 days
5.0 (3 reviews)
4.7
4.7
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Hi, I noticed that you are looking for blockchain developer for your project blockchain We have expertise in blockchain and can provide you the complete solution like ICO, smart contract, white paper, blockchain integration, Dapps, EOS, etc.. - We have done the integration and implementation of coins earlier. - With cryptocurrency as a medium of exchange, we have worked on many projects dealing with such digital assets to secure and control the financial transactions, as well as verify the transfer of assets. Also I do have few queries: - Could you please share some more details of your project for better understanding? - What is your estimated timeline and budget for the project? We have hands-on experience in blockchain development. and have developed blockchain applications with send, receive, transaction history, chat pay, swap functions, etc. We are a team of experts having 8+ years of experience in IT industry & developed 150+ products including AI, Blockchain, Raspberry Pi and many more. ** This budget and time are just placeholders, this will be finalized during discussion. ** Looking forward to hear from you. Best Regards, Tapan S.
€9,940 EUR in 7 days
5.0 (6 reviews)
3.8
3.8
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Hi, may I ask you how exactly do you want this transaction to be invalid? I mean, will it be spending non-existent outputs? or will it make a reference to existing outputs but with invalid signatures in the inputs? Also we would need to specify some more details about it, because as it was described I think the budget is too high. Which leaves me to think that there might be more to what you really want. Best regards. Nelson
€5,000 EUR in 7 days
5.0 (1 review)
1.3
1.3
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Good evening, I was interested in your project, my team of professional web developers has the necessary skills. Ready to complete the task quickly and efficiently.
€9,000 EUR in 15 days
0.0 (0 reviews)
0.0
0.0
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Narinder Alliance Technologies LLC An IT Consulting and Software Development company. We have a team expert in Web Designing, Application Development and Databases. We have worked on various projects across various industry verticals. We are specialized in IT Projects and have a team to handle various applications and provide IT support after the application goes live. We can provide you offshore support from US & India and in US Timings. For your application needs you can rely on us and can cut down the team size. Also we provide the high quality support and had consultants who can think out of the box and are very innovative. We believe in Innovation and R&D. We provide quality Project support after its up and running.
€10,000 EUR in 60 days
5.0 (1 review)
0.0
0.0

About the client

Flag of GERMANY
Landstuhl, Germany
0.0
0
Member since Apr 9, 2020

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