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    5,000 bitcoin jobs found

    ...and dismissed as volatile and risky. Whether viewed as revolutionary or controversial, Bitcoin has undeniably reshaped conversations about money, technology, and financial sovereignty. The Origins of Bitcoin Bitcoin was introduced in 2008 through a whitepaper titled “Bitcoin: A Peer-to-Peer Electronic Cash System” by an anonymous individual or group using the name Satoshi Nakamoto. In January 2009, the Bitcoin network officially launched with the mining of the first block, known as the “genesis block.” The whitepaper proposed a radical idea: a decentralized digital currency that would operate without a central authority such as a government or bank. Instead of relying on trust in institutions, Bitcoin would rely on cry...

    $29 / hr Average bid
    $29 / hr Avg Bid
    7 bids

    ...The minimum viable product therefore revolves around three pillars: 1. Real-time market data – tight latency on price feeds, order book depth and recent trades is essential. Whether you hook into existing exchange APIs, aggregate several sources, or build your own feed handler, the ticker and order book must update instantly without page refreshes. 2. Multi-currency support – at launch I want Bitcoin, Ethereum and at least three additional top-tier coins live, with the system architected so that adding new pairs later is straightforward. 3. Seamless order execution – limit, market and stop-limit orders with immediate feedback on fill status. A matching engine of your own design or a proven open-source core is fine as long as it can scale and pass a basic stre...

    $851 Average bid
    $851 Avg Bid
    42 bids

    ... blockchain, DeFi, NFTs, and Web3 Cover breaking news and trending topics in the crypto space Conduct research and verify information from reliable sources Produce opinion pieces, explainers, and long-form analysis Maintain a consistent publishing schedule Optimize content for SEO Requirements Proven experience writing about / blockchain Strong understanding of: Bitcoin & Ethereum ecosystems DeFi protocols Layer 2 solutions Tokenomics Market analysis Ability to explain technical topics clearly Excellent English writing skills Fast turnaround time for news-based content Familiarity with SEO best practices Nice to Have Journalism background Experience working with crypto media outlets Understanding of on-ch...

    $1207 Average bid
    $1207 Avg Bid
    34 bids

    ...end-user want to flash. (USDT, BTC and TRX) Compatible with all USDT networks (TRC20 , ERC20 , BEP20 , BEP2 , SOLANA , POLYGON) 4) I want the sending screen to be easy and to show the message easily. 5) VPN and TOR options included with the proxy Blockchain server option 100% confirmed transaction The transaction fee is max, priority for quick confirmation Cannot cancel a transaction with the bitcoin server It works with all wallets Anyone able to do this job send me your best quote + BIG bonus in any form wanted , ect) after delivery and proof of trial! I am open for discussions and We can discuss about more in chat I want good work to be done without problems, Need it Only for educational purposes For our student project...

    $593 Average bid
    $593 Avg Bid
    17 bids

    I need help recovering funds lost in a Bitcoin investment scam. The scam occurred via cryptocurrency. Hello, I am a 80 year old woman with Chronic Lung Disease and a cancer patient. I have been scammed by 2 different bitcoin investors. I need someone that can help me recover my funds. I have $9998.50 in USD.T and $2,500 in WSG in my Trust Wallet I need to try and transfer to my bank. I am alone and have nobody to help me. I am out of my medication and broke. PLEASE PLEASE CAN SOMEBODY HELP ME??? I AM NOT LOOKING FOR A HAND-OUT BUT A HELPING HAND-UP. Thank you and have a blessed day! Regards Ms Pat S Morrison

    $166 Average bid
    $166 Avg Bid
    5 bids

    I’m running a server and I’m looking for an experienced developer to build a fully custom mining pool environment from the ground up. The setup should support two modes on the same server: a solo mining pool for Fractal Bitcoin (FB) using the SHA-256 algorithm, and a merged-mining pool that works with both Bitcoin (BTC) and Fractal Bitcoin at the same time. This needs to be a completely custom solution rather than based on existing pool software like MPOS or NOMP. You’re free to choose the programming language and framework as long as the result is stable, efficient, and well documented. Once everything is set up, my ASIC miners should be able to connect via Stratum and begin hashing without issues. The pool must fully support SHA-256 mining in both ...

    $29 / hr Average bid
    $29 / hr Avg Bid
    126 bids

    ... Before the main application opens, there should be an admin input option where I can manually enter the username and account balance, and that same information should be displayed inside the software interface. Additionally, before entering the main app, there should be a Yes/No toggle option to control withdrawal behavior in demo mode: if “Yes” is selected, any demo withdrawal (e.g., crypto/Bitcoin source) should show a successful transaction after the loading animation; if “No” is selected, clicking the withdrawal button should directly redirect the user to the subscription plan page and prompt them to purchase a plan. The app should include a login screen (UI only), a dashboard showing user balance (based on the manually entered demo data), a withdrawa...

    $845 Average bid
    Urgent
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    37 bids

    I’m putting together a simple black-and-white animation that walks viewers through Bitcoin’s history and origin before moving into a clear, engaging look at how it actually works. The piece should feel cartoonish rather than sketch-like or minimalist—think bold outlines, expressive motion, and playful transitions—yet it doesn’t need ultra-...Adobe Animate or similar) Acceptance criteria 1. Total length sits between 6–10 minutes. 2. Both requested topics—Bitcoin’s backstory and core mechanics—receive clear, balanced coverage. 3. Black-and-white cartoon style is consistent from first frame to last. If you prefer specific software, give me a quick note; I’m flexible so long as I receive the editable project files. Let&rsq...

    $16 / hr Average bid
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    38 bids

    I am in the middle of financial-remedy proceedings and have been appointed to instruct a single joint expert. My ex-partner has disclosed a series of public keys and wallet addresses; however, I still need a clear, defensible picture of exactly how much cryptocurrency he currently holds and through how many wallets. The work centres on three core blockchains—Bitcoin, Ethereum and Ripple—but there may be additional tokens mixed in, so flexibility to widen the net is essential. I can supply every public key and wallet address already disclosed, and I can request anything else you identify as relevant. Your task is to trace those identifiers on-chain, calculate the present balances, and compile a concise report that can stand up to court scrutiny. Chain-analysis platform...

    $1303 Average bid
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    25 bids

    I am commissioning a bilingual iOS application—Arabic first, English second—that delivers live Bitcoin and selected-coin data with a professional, sleek interface entirely in Swift and SwiftUI. The app’s core revolves around real-time price feeds, historical price charts, and razor-sharp alerts that keep users ahead of major market moves. Arabic users will enjoy a true RTL layout, while English users see a standard LTR presentation, all driven by Apple’s native localization tools. Key functionality I need implemented: • Current price updates streamed from a reliable REST source • Historical price charts for deeper context • Push notifications for major price changes via Firebase Cloud Messaging • In-app alerts that surface whale a...

    $3430 Average bid
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    131 bids

    ...Nutzer und Admins verbindet. Die Plattform soll multilingual, rechtlich konform und hochsicher sein. Live-Streaming wird vorbereitet, aber nicht aktiv im MVP umgesetzt. Ziele: Multi-User Social Media Plattform (User, Creator, Admin, Moderation, Compliance) Token-gestützte Monetarisierung inkl. Kauf, Bonus, Auszahlung Multi-PSP Unterstützung: Stripe, PayPal, Paysafe, Visa/Mastercard, IBAN/SEPA, Bitcoin (BTC) KI-gestützte Content-Moderation und Empfehlungen KYC / Altersverifikation (ID Upload, Selfie, Liveness Check) Frontend Widgets: Token-Kauf, Altersprüfung, DRM-Video-Player, Tool Control (optional für spätere Nutzung) Multi-Language Support: DE, EN, TR, AR, RO, BG, RU, ES Sicherheits- & DevOps-Setup: DDoS, WAF, Key Management, Logging,...

    $6382 Average bid
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    123 bids

    I need help setting up my newly purchased Bitcoin miner to work with public pool mining and connect to my Bitcoin Core node. Ideal skills and experience: - Experience with Bitcoin mining - Familiarity with public mining - Knowledge of Bitcoin Core setup and configuration - Technical troubleshooting skills

    $188 Average bid
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    15 bids

    Python for Openimestamps. I need a Python expert to install Python instance with Bitcoin library fully updateable including bitcoin key code instance. This installation needs to allow Pyhthon code to post yo zopentimestamps and retrieve the relevant .ost file for verification on Win 11 OS. No ChatGPT operators please. Onlg true Python specialists!

    $27 Average bid
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    28 bids

    ...looking for someone to help us fix migration issues in a core flutter package: flutter_secure_storage Our application (as well as others) depend on this package to handle safe migration of data. The work is only on the library. This is not an application development project - it is a library security patch. Current System: EncryptedSharedPreferences Target System: Keystore Data to Migrate: - Bitcoin Wallet Private Keys Ideal Skills & Experience: - Strong knowledge of Android security practices - Experience with EncryptedSharedPreferences and Keystore - Proficiency in handling sensitive data migration We are a flutter mobile project using the flutter_secure_storage dependency that does not guarentee successful migration from encryptedSharedPreferences to the standard Keys...

    $5239 Average bid
    Urgent
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    27 bids

    This project requires real GPU computation, correct Bitcoin cryptography handling, and verifiable results. This is not a demo or theoretical project. The program must be fully functional and tested. Only apply if you have proven experience with CUDA, cryptography, or Bitcoin key handling.

    $160 Average bid
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    1 bids

    I’m putting together a new informational site focused on the Bitcoin protocol and I need a polished visual mockup to guide development. I already have several reference sites in mind and I’d like to borrow their overall layout and structure, then tailor the result so it feels uniquely on-brand for Bitcoin—clean, innovative and trustworthy without looking overly “corporate.” Here’s what I’m after: • A desktop-first mockup (with mobile breakpoints, if possible) • Layered source files (Figma, Sketch or Adobe XD, PSD are all fine) • 3 Design needed Below are reference URLs, - - - - Existing site for brand guidelines we have once we start. If you have questions about specific design conventions

    $116 Average bid
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    57 bids

    Job Title: CUDA Developer Needed – GPU-Accelerated Bitcoin WIF Key Recovery Tool (Verification Required) Project Description: I am looking for an experienced CUDA / GPU developer to build and optimize a high-performance Bitcoin WIF private key recovery program. This project requires real GPU computation, correct Bitcoin cryptography handling, and verifiable results. This is not a demo or theoretical project. The program must be fully functional and tested. Only apply if you have proven experience with CUDA, cryptography, or Bitcoin key handling. Technical Requirements: - Written in C++ with CUDA - Runs on NVIDIA GPUs - Command-line interface (CLI) - Supports Bitcoin WIF (Base58Check) - Supports compressed and uncompressed private keys - Corr...

    $237 Average bid
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    34 bids

    I am looking to build an MVP version of a peer-to-peer betting platform, inspired by , focused strictly on core functionality. Important note: This project has NO strict deadline. The timeline is fully flexible, and the main priority is keeping development costs low, not speed. MVP scope: User registration and login Each user has a Bitcoin deposit address linked to their account Users deposit BTC, which is displayed as an EUR-denominated internal balance (for betting purposes only) Users can: Create simple peer-to-peer betting markets Join and accept bets created by other users Basic user dashboard showing balance, open bets, and settled bets Bet handling: Very simple bet structure (event description, stake, odds, outcome) Manual or admin-based bet settlement (no automa...

    $33 / hr Average bid
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    41 bids

    ...staking protocols Implement Fireblocks-based custody and approval policies Monitor risk, exposure, and asset allocation Support audits, compliance, and reporting requirements Evaluate new blockchain networks and DeFi opportunities Required Qualifications 5+ years of institutional crypto asset management experience Hands-on experience with Fireblocks / BitGo / Copper Strong understanding of Bitcoin, Ethereum, L2s, and major blockchains Experience managing large crypto portfolios Ability to communicate technical concepts to business stakeholders Nice to Have CFA / FRM / crypto certifications Experience at crypto funds, exchanges, or custody providers Open-source, research, or thought leadership background Why Join Us Work on institutional-grade crypto infrastructure...

    $9 - $23
    $9 - $23
    0 bids

    ...need a fully self-hosted PHP solution that lets me accept and track crypto payments without relying on any third-party processor or API. The gateway must handle wallet creation, incoming payment detection, confirm transactions, and trigger my own callback URLs so I can update orders in real time. Supported currencies (must be native, on-chain operations only): • USDT TRC20 • USDT ERC20 • Bitcoin What matters most is reliability and security: private keys stay on my server, transactions are signed locally, and every step—from address generation to balance checks—runs through code you supply. If you can demonstrate a compelling reason to use an additional micro-service or even switch portions to Node.js or Python I’m open to it, but PHP rema...

    $5983 Average bid
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    37 bids

    I need a prebuilt casino website equipped with a crypto payment gateway. The casino should include a variety of games such as Slots, Poker, Blackjack, color prediction, Ludo, and Aviator. For the crypto gateway integration, I require support for Bitcoin, Ethereum, Litecoin, and USDT. The design should maintain a simple and user-friendly style, ensuring seamless navigation and an engaging user experience. If you can deliver a solution that meets these specifications, I look forward to working with you.

    $23 Average bid
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    14 bids

    I am expanding my existing payment module to accept and send Bitcoin and need a complete transfer layer built with React on the front end and Node.js on the back end. The solution will plug straight into my current codebase (no third-party gateway) and must speak directly to the BlockCypher API. Scope of work – Front end (React) • A clean payment form that lets the user enter the BTC amount and the destination wallet address. • Real-time transaction status updates (pending, confirmed, failed). – Back end (Node.js) • Programmatic creation and broadcasting of Bitcoin transactions through BlockCypher. • Secure storage and encryption of private keys (please outline your preferred method; I am open to industry-standard librarie...

    $5854 Average bid
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    40 bids

    I need a full-featured crypto exchange, visually and functionally inspired by , but built from scratch so I retain complete ownership of the code. Core trading must cover Bitcoin (BTC), Ethereum (ETH), Ripple (XRP) and fiat pairs against USD, with the flexibility to add more assets later. Key workflows I want ready on day one: • Secure, on-chain wallet management for each user, with hot-cold wallet logic and automated deposit / withdrawal processing. • Integrated video-based KYC that performs real-time liveness detection before an account is approved. The verification should plug into the onboarding flow seamlessly, store audit logs, and give me an admin panel to override or re-verify if needed. I’m comfortable with any modern stack—popular choices li...

    $113 Average bid
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    8 bids

    I want an automated trading bot that executes high-frequency scalping on my MetaMask-connected account. The bot will watch price movements on the tokens I actively hold—USDT, USD Coin, XRP, Bitcoin, and Ethereum—entering micro trades, capturing small spreads, and closing each position within minutes once the predefined profit target or stop-loss is hit. Key expectations • Direct integration with MetaMask so orders route through the wallet without manual signing once permission is granted. • User-editable settings for position size, profit take, stop-loss, maximum concurrent trades, and gas/slippage limits. • Real-time monitoring dashboard (CLI or lightweight UI) that logs every fill, PnL, and cumulative performance. • Safety checks: anti-sa...

    $806 Average bid
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    38 bids

    I need help running Google ads to increase brand awareness for my Bitcoin ATM business among the general public. Key Requirements: - Create and manage Google ad campaigns - Focus on brand awareness - Target general public - No rush on completion Ideal Skills: - Experience with Google Ads - Knowledge of crypto market - Strong analytical skills - Creative ad copywriting Looking for a freelancer who can help me effectively reach my target audience.

    $524 Average bid
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    50 bids

    I have just purchased a Bitcoin USB wallet and need it up and running right away. The device has never been initialized or has been settled online purchase into reality / real life if so I’ll be starting from scratch: installing the required firmware, generating secure keys, creating the first wallet address, and double-checking that my recovery phrase is stored safely. Because I originally made this investment during a turbulent period in my city light I also want a clear, jargen-free explanation of what my potential returns could look like if I were holding or moving funds outside my current jurisdiction hold ons. Here’s what I expect once we begin: • A live session where you guide me through every step of the setup (iPhones or iPads storing it into a mobile if...

    $44 / hr Average bid
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    22 bids

    Bitcoinner will be a live Bitcoin trading venue where automated bots handle all order flow through a market-making strategy. The goal is to keep tight spreads, provide continuous liquidity, and generate steady fees while managing risk in real time. What I already have in mind • Core trading engine that talks to major spot exchanges through WebSocket and REST • Strategy layer that places, cancels, and reprices quotes every few seconds based on order book depth, inventory, and volatility • Simple web dashboard that shows PnL, order book position, current inventory, and adjustable parameters such as target spread, size, and skew • Configurable risk controls: max position, kill-switch, and latency checks • Persistent logs plus basic alerting (email or...

    $29 / hr Average bid
    $29 / hr Avg Bid
    22 bids

    ...black or dark background Strong typography Editorial, premium feel Subtle or no illustration Feels serious, legacy-driven, timeless 2. Symbol-Led Concept Use of symbols layered or patterned across the cover Symbols may include: Entrepreneurship Learning Networks Growth Abstract, not literal Clean composition, not cluttered 3. Technology & Future-Focused Concept References to: AI Bitcoin / crypto Future technologies Symbols or abstract representations (not flashy or gimmicky) Feels intelligent and forward-looking 4. Fun / Lively / Human Concept Energetic but still premium Reflects: community creativity experimentation Balanced — not childish or noisy 5. Entrepreneurial School Identity Must subtly communicate: ambition learning by doing bui...

    $136 Average bid
    Guaranteed
    $136
    929 entries

    A concise, persuasive profile text is required for my blockchain venture that touches on Bitcoin, Ethereum, APRO and other key elements of the ecosystem. The copy must do more than introduce the project’s features; it should weave in my personal achievements, spotlighting the career milestones that underline my credibility in the crypto space. The core piece will serve multiple fronts—website ‘About Us’, investor decks, and social channels—so it needs to sound authoritative yet approachable. I primarily need the description in clear, professional English, but I’m happy to review Hindi or Hinglish versions if you’re comfortable producing them. Please craft: • A 300–400-word main profile description. • Two punchy taglines...

    $15 / hr Average bid
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    2 bids

    I'm looking for a skilled developer to create a secure and efficient crypto exchange platform. The exchange should support Bitcoin (BTC), Ethereum (ETH), and Ripple (XRP). Key functionalities include: - Trading platform - Wallet integration - Deposit/Withdrawal system Security features are paramount, and must include: - Two-factor authentication (2FA) - Cold storage solutions - Encryption protocols Ideal candidates will have: - Proven experience in developing crypto exchanges - Strong understanding of blockchain technology and cryptocurrencies - Expertise in implementing robust security measures - Proficiency in wallet integration and trading platform development Please provide examples of similar projects you've completed and your approach to ensuring security and fun...

    $27 / hr Average bid
    $27 / hr Avg Bid
    21 bids

    A concise, persuasive profile text is required for my blockchain venture that touches on Bitcoin, Ethereum, APRO and other key elements of the ecosystem. The copy must do more than introduce the project’s features; it should weave in my personal achievements, spotlighting the career milestones that underline my credibility in the crypto space. The core piece will serve multiple fronts—website ‘About Us’, investor decks, and social channels—so it needs to sound authoritative yet approachable. I primarily need the description in clear, professional English, but I’m happy to review Hindi or Hinglish versions if you’re comfortable producing them. Please craft: • A 300–400-word main profile description. • Two punchy taglines...

    $19 / hr Average bid
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    1 bids

    I’m putting together a practical resource aimed at everyday people who want to boost their finances through smart cryptocurrency investing. I already know the audience: beginners who may have dabbled in savings accounts or index funds but feel intimidated by Bitcoin, Ethereum, and the wider alt-coin landscape. Here’s what I need from you: a clear, actionable set of investment guidelines that demystifies the crypto market, explains core concepts (wallets, exchanges, security best practices), and walks readers through creating a balanced crypto portfolio. The content has to stay realistic about risk, offer strategies for minimizing it, and highlight common pitfalls to avoid. Deliverables • A step-by-step written guide (8-10 pages is plenty) formatted for web a...

    $27 / hr Average bid
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    9 bids

    I’m compiling a series of Bitcoin market analysis reports that focus exclusively on the Fear & Greed Index and how it reflects long-term investor sentiment. To streamline my workflow, I need a well-structured Excel workbook that automatically pulls the latest index data, stores historical values, and presents clear visual insights—charts, conditional-format dashboards, and a concise written summary section inside the sheet. The core purpose is straightforward: each time I open or refresh the file I should instantly see where sentiment stands today, how it has trended over weeks and months, and what that might imply for multi-year positioning. The file must be self-contained—no paid API keys—so a solution that relies on freely accessible endpoints or a li...

    $125 Average bid
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    21 bids

    ...buyers to see the savings automatically when they add more units to their cart. Please connect PayPal as the primary gateway and leave hooks ready for Bitcoin and Google Pay so I can turn them on later. A modern, responsive design is non-negotiable, and I’d like a lightweight theme that lets product images stand out on both desktop and mobile. Deliverables: • Complete WordPress + WooCommerce installation on my host • Six pages fully built and linked in the menu • Product search/filter set up for type, model, and brand • Two live sample products with quantity-based pricing rules • PayPal checkout working (test mode is fine) with Bitcoin and Google Pay options prepared but not live • Clean, modern styling inspired by Once e...

    $964 Average bid
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    188 bids

    ... The plan is to credit users with Worldcoin each time they complete certain activities, then let them decide what to do with their balance: • withdraw the coins to their own wallet • redeem them for in-app items (badges, premium lessons, etc.) • exchange them for existing points or credits already tracked in our database Worldcoin is non-negotiable (I’ve chosen it over the more common Bitcoin, Ethereum or Litecoin), so the job centres on connecting the app to reliable Worldcoin APIs or SDKs, handling on-chain transactions, and keeping everything secure and performant in plain PHP/MySQL. Key deliverables • Cleanly coded Worldcoin reward module that drops into my current MVC structure • Wallet generation or external-wallet withdrawal fl...

    $269 Average bid
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    50 bids

    I’m looking to spin up fully-featured cryptocurrency mining pools that cover every major algorithm—Bitcoin, Ethereum, Litecoin and anything else miners might demand. Beyond simply standing up the pools, I also need the underlying block templates created and editable so future coin or parameter changes are straightforward. Core features I must see running smoothly are real-time hashrate monitoring, an automated payout system, and robust user account management. You’re free to recommend the best open-source frameworks or commercial packages to build on; if none fit, outline a custom approach and why it beats existing options. Deliverables • Operational multi-algorithm pools accessible via stratum + web UI • Editable block-template logic for each suppo...

    $5742 Average bid
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    19 bids

    ...building dApps or smart-contract-driven back-ends that interact with Bitcoin-based protocols (e.g., Ordinals, Stacks, Lightning or comparable layer-2 solutions) is crucial. Here’s what the first release must include: • Secure user registration & login tied to on-chain identity or keyed-pair auth • Native crypto wallet integration for seamless deposits and withdrawals • A verifiable “provably fair” engine with open seed, nonce, and hash display so players can audit every roll • Three playable games out of the gate—slots, poker, and roulette—each wired into the same wagering and payout smart-contracts • A responsive front end (React, or similar) that talks to the blockchain via , , or equivalent Bitcoin...

    $652 Average bid
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    63 bids

    you can create a demo to see it and who make a better i contact I need a full-featured web DApp that lets visitors connect with MetaMask (or any EVM-compatible wallet), verify ownership in one click, then immediately start mining. The platform must support both my own custom token and popular coins such as Bitcoin or Ethereum, so users can pick the asset that interests them most and watch rewards accumulate in real time. Core flow • After wallet connection, the user should be able to press “Start Mining”, see their current hashrate, purchase extra hashrate for faster returns, and pause or stop at any moment. • Mined rewards must be claimable directly to the connected wallet, with an on-chain record of every payout. • A built-in swap interface shou...

    $319 Average bid
    $319 Avg Bid
    16 bids

    Accepting Quotes Job steps 1. Search best website to download cryptos historical data. 2. Download export 10-15 years bitcoin data daily into spreadsheet. 3. Setup table with equations from data sheet to show: average, max, min, and most frequent % changes. a. Yearly b. Quarterly c. Monthly d. Weekly e. Daily Much Thanksgivings Anticipate additional work as project continues. I do not want write up, I require tables and spreadsheets only. I need source data not Ai blah blah blah. Later may require pivot table for graphing. Calculate potential return by shortening the buy sell times based on % change.

    $183 Average bid
    $183 Avg Bid
    15 bids

    I actively trade crypto and have already accumulated some Bitcoin, but I want a clear, research-backed strategy that lets me grow both my BTC and ETH positions over the long run. The focus is strategy—not day-trading tips—so I need a solid framework that sets out when to add to my holdings, how to size positions, and the risk controls that keep drawdowns acceptable. What I expect from you is a well-structured plan that blends technical indicators (TradingView, moving averages, on-chain metrics if useful) with macro fundamentals so I can make confident, low-frequency decisions. Because the objective is long-term wealth creation, I’m interested in accumulation tactics, rebalancing triggers, and clear rules for profit-taking only at predefined milestones. Deliverabl...

    $26 / hr Average bid
    $26 / hr Avg Bid
    5 bids

    Second Annotation Project Bitcoin, Money, PiggyBanks

    $273 Average bid
    $273 Avg Bid
    1 bids

    I need a basic Python bot that works with Polymarket and places limit orders on Bitcoin markets (example: BTC Up/Down 15m markets such as The bot should be simple, stable, and easy to modify. It must run on Windows and allow me to manually control prices and order sizes. Core Requirements: Written in Python Runs on Windows Uses a .env file to store the wallet private key Private key must NOT be hardcoded I should be able to change the key easily by editing the .env file Connects to Polymarket using the wallet private key Ability to place limit orders on BTC markets I should be able to configure: Limit order price Share/contract amount Support placing multiple limit orders if needed Basic error handling (failed order, connection issue

    $207 Average bid
    $207 Avg Bid
    11 bids

    ...preferred; GCP/Azure also relevant), including: Deploying and operating backend services Managing cloud resources (networking, storage, IAM) Using infrastructure-as-code or similar automation tools 3. Blockchain Fundamentals Understanding of how blockchains work (transactions, addresses, wallets) Experience working with blockchain data or APIs Familiarity with more than one network (e.g., Bitcoin, Ethereum, etc.) Nice-to-Have Domain & Product Experience Background in financial services, fintech, or other data-heavy domains Experience with risk, anomaly, or fraud detection systems Real-time or near-real-time transaction / event monitoring Experience combining rules-based systems with ML models What You’ll Do Design and implement ML models and data pipeline...

    $41 / hr Average bid
    $41 / hr Avg Bid
    58 bids

    I have a Nvidia Jetson Nano Developer Kit that I want to dedicate exclusively to Bitcoin mining. The board will be running under Windows 11, so the application you deliver must install and operate smoothly in that environment without the usual Linux-only work-arounds that most Jetson guides assume. Here is what I need from you: build a lightweight, fully-functional miner that recognizes the Jetson Nano’s CUDA-capable GPU, connects to any standard Bitcoin pool I specify, and begins hashing immediately after a one-time setup wizard. The setup flow should auto-detect the board’s hardware, prompt for the pool URL, wallet address, and worker name, then save those settings for future boots. Key technical expectations • CUDA acceleration out of the box—no ...

    $686 Average bid
    $686 Avg Bid
    43 bids

    ...tokens and trading logic, an automated market-maker module for continuous liquidity, and native multi-currency support so users can swap any asset minted on this chain without wrapping or bridging. Smart contracts should compile down to EVM-compatible bytecode so we inherit a mature tooling ecosystem (Solidity, Hardhat, Remix, ). For the node layer, Go or Rust implementations that mirror Bitcoin-style PoW security would be ideal, provided you can integrate a modern mempool and fee-bidding mechanism. Here is what I expect at hand-off: • Running mainnet and testnet nodes with reproducible build scripts • A reference wallet CLI and minimal web wallet that signs and broadcasts transactions • The DEX front end (React or Vue) wired into backend indexers, showing li...

    $2271 Average bid
    $2271 Avg Bid
    13 bids

    ...for monitoring users, transactions, and earnings Ensure high-level security and data protection Perform testing, deployment, and post-launch support Required Skills & Experience: Web Development: HTML, CSS, JavaScript, React / Vue / Angular Backend Development: Node.js, Python, PHP, or similar Mobile App Development: Flutter / React Native / Swift / Kotlin Blockchain & Crypto Knowledge (Bitcoin, Ethereum, USDT, etc.) Wallet Integration (MetaMask, Trust Wallet, WalletConnect, etc.) Smart Contracts (Solidity – preferred) Database Management (MySQL, PostgreSQL, MongoDB) API Integration & Payment Gateways UI/UX Design Tools (Figma, Adobe XD, etc.) Strong understanding of security best practices Nice to Have: Experience with DeFi, staking, or crypto in...

    $381 Average bid
    $381 Avg Bid
    78 bids

    ...buzzwords and really understand whether cryptocurrency mining—or a comparable blockchain-based strategy—fits my investment goals and risk appetite. I’m looking for someone who has first-hand experience setting up and running profitable mining operations and can translate that knowledge into clear, actionable guidance. Here’s what I need from you: • A concise assessment of current opportunities in Bitcoin, Ethereum, and promising altcoin mining, including hardware requirements, electricity costs, realistic break-even timelines. • A comparison of solo mining versus reputable mining pools, outlining the pros, cons, and expected yields for each path. • Alternative suggestions if mining is not the most sensible route right now—for exampl...

    $771 Average bid
    $771 Avg Bid
    9 bids

    I recently fell victim to an online scam that drained my Bitcoin holdings. I already know the destination wallet address and have filed a formal report with the police, but I need a seasoned specialist to tell me whether the funds can realistically be traced or reclaimed. Your task is purely consultative at this stage. I want a clear, jargon-free assessment that covers: • Technical avenues for tracing the stolen BTC on-chain with tools such as Chainalysis or Crystal Blockchain • Legal and investigative steps that could complement the on-chain work, including how a police report may help compel exchanges or custodians • Practical limitations, time frames, and an honest probability of success so I can decide whether to fund a full recovery effort The deliverable ...

    $9665 Average bid
    $9665 Avg Bid
    34 bids

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