Filtrare

Căutările mele recente
Filtrează în funcție de:
Buget
la
la
la
Tip
Aptitudini
Limbi
    Starea proiectului
    5,000 cryptocurrency proiecte găsite

    - proiectul urmeaza sa fie facut folosind blockchain si dezvoltat pe platforma ethereum - dupa lansarea proiectului dorim sa nu se mai poata modifica codul sursa - folosim blockchain pen...blockchain si dezvoltat pe platforma ethereum - dupa lansarea proiectului dorim sa nu se mai poata modifica codul sursa - folosim blockchain pentru ca dorim sa fie un program autonom , descentralizat si complet anonim - siteul pe care va fi implementat proiectul trebuie sa aiba anumite functionalitati si anume : * interfata de sign up / login + google authentification * transfer de cryptocurrency pentru a putea fiecare sa isi alimenteze contul de pe site cu ETH / BTC ( ETHEREUM / BITCOIN ) * withdraw ETH / BTC cu securizare two factor code ( google authenti...

    $1419 Average bid
    $1419 Oferta medie
    12 oferte

    Dupa cum spune si titlul, sunt in cautarea unui programator dispus sa intre intr-un parteneriat pentru dezvoltatea unui monede virtuale bazate pe Ethereum. Eu ma voi ocupa de design-ul monedei virtuale, site-ului de prezentare si de promovarea acesteia. Programatorul trebuie sa cunoasca piata cryptocurrency, cum functioneaza aceasta etc. Alte detalii vor fi discutate in privat.

    $139 Average bid
    $139 Oferta medie
    4 oferte

    Caut programator senior in Javascript pentru colaborare si dezvoltare platforma bazata pe blockchain.

    $3769 Average bid
    $3769 Oferta medie
    4 oferte

    We are looking for an experienced and reliable lead generation specialist with a strong understanding of the cryptocurrency and blockchain space. Your primary responsibility will be sourcing high-quality, targeted crypto leads based on defined criteria. This may include (but is not limited to): • Identifying potential investors, traders, or crypto-interested users • Sourcing business leads within the blockchain / Web3 ecosystem • Collecting accurate contact details and relevant data • Ensuring leads are verified and up-to-date Requirements: • Proven experience in lead generation (preferably in crypto / blockchain niche) • Strong research skills and attention to detail • Ability to deliver accurate, high-quality data • Familiarity wit...

    $365 Average bid
    $365 Oferta medie
    2 oferte

    I run a new cryptocurrency news feed that lives or dies on breaking market information. The goal is simple: deliver the very latest market updates and trends to my readers before the competition does. Your task is to scan trusted sources—official exchange announcements, CoinDesk, Bloomberg Crypto, verified Twitter accounts, on-chain analytics—and turn each relevant discovery into a concise, factual brief ready for immediate publication. Speed and accuracy come first. Every post must be written, proof-checked, and delivered within 30 minutes of the news breaking. I’ll share a style sheet, headline formula, and WordPress access; you can also hand in drafts through Google Docs if that’s faster for you. Deliverables • 3 market-centric news briefs per weekd...

    $27 / hr Average bid
    $27 / hr Oferta medie
    3 oferte

    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...

    $949 Average bid
    $949 Oferta medie
    25 oferte

    Project Title: Professional Telegram Marketer Needed to Grow Solana Trending Channel to 10K+ Subscribers (Profit Share) Project Description I run a Telegram channel called MemePulse focused on Solana trending tokens and updates. We just lunched this channel. Right now we have around 40 subscribers, and our goal is to grow to 10,000+ real and engaged subscribers. I’m looking for a professional marketer who has proven experience growing Telegram channels, especially in crypto, Web3, or trading communities, and who can build a reliable growth system, not just quick spikes. This will be a performance-based role with profit sharing. You will help plan and execute the marketing strategy, drive consistent subscriber growth, and improve engagement quality. I’m not interested in bots...

    $24 / hr Average bid
    $24 / hr Oferta medie
    5 oferte

    We need to build a State Machine that manages high-value physic assets.1. The Core AI & Development Team of three primary roles to handle the "Brain," the "Vault," and the "Interface."A. Lead Full-Stack Architect (The System Builder)The Job: Build the "State Machine" that tracks the 60-day vetting clock and the referral Responsibilities: Integrate Paddle API for payment and 60-day "Provisional" status logic. Build the Referral Engine (Tracking the "Rule of 12" and the "125 Goal"). Implement Provably Fair randomness for the 25,000-subscriber gold drawings. Ensure the site is a Static Build () to handle 2,300+ sign-ups daily without crashing. Search Terms: Expert, Fintech Developer, State Machine Logic, Paddle Integr...

    $1192 Average bid
    $1192 Oferta medie
    227 oferte
    Smartphone-based Application Testing
    3 zile left
    Cont confirmat

    Participation Requirements: Residents of Malaysia, Thailand, South Korea, Australia, Singapore, Canada, etc. Applicants from other countries are also welcome to inquire. Must have a smartphone and internet connection. You must follow the provided instructions and submit a video or screenshot of the test results. After passing the test, we will prov... D. Selling Assets – Successfully sell assets; funds will be returned to your application balance or account. E. Creating a USD/EUR Account – Successfully activate and display account information. F. Deposit Test – Successfully deposit funds into your account. G. Currency Exchange Test – Complete a currency exchange test transaction. H. Investment Purchase Function Test I. Apply for a cryptocurrency car...

    $130 Average bid
    $130 Oferta medie
    54 oferte

    ...Panel ● User monitoring ● Rule configuration ● Challenge management ● Manual payout approvals ● Account override controls 4. Rule Enforcement Engine All trading rules are enforced in real-time. Breaches result in automatic account suspension and dashboard status updates. Includes: ● Daily drawdown ● Maximum loss ● Minimum trading days ● Profit targets 5. Payments & Billing ● Cryptocurrency gateways ● Bank payment APIs ● Stripe fallback ● Secure checkout ● Payment records 6. KYC & Verification KYC is triggered after challenge completion using third-party providers with facial recognition. Status: Pending → Approved → Rejected 7. Blog & Content Management A headless CMS manages blog, education, and announcements for SEO and credibility...

    $303 Average bid
    $303 Oferta medie
    26 oferte
    Multi-Platform Game Recharge Website
    22 ore left
    Cont confirmat

    ...site. I already have the product scope and need a developer who can take it from concept to launch, focusing on seamless UX, airtight security, and easy scalability. Core requirements • Supported platforms: Mobile, PC, Console • User authentication: Email & password, social media login, and an extra layer of two-factor authentication • Payment options: Credit/Debit card, PayPal, and Cryptocurrency (major coins) What I expect • A clean front-end with intuitive purchase flow and wallet balance display • Robust back-end that handles order creation, payment confirmation, and automatic delivery of in-game currency or codes • Admin dashboard for product management, transaction tracking, and user support tools • PCI-compliant paymen...

    $207 Average bid
    $207 Oferta medie
    97 oferte
    Real Time Crypto Updates
    6 ore left
    Cont confirmat

    I run a new cryptocurrency news feed that lives or dies on breaking market information. The goal is simple: deliver the very latest market updates and trends to my readers before the competition does. Your task is to scan trusted sources—official exchange announcements, CoinDesk, Bloomberg Crypto, verified Twitter accounts, on-chain analytics—and turn each relevant discovery into a concise, factual brief ready for immediate publication. Speed and accuracy come first. Every post must be written, proof-checked, and delivered within 30 minutes of the news breaking. I’ll share a style sheet, headline formula, and WordPress access; you can also hand in drafts through Google Docs if that’s faster for you. Deliverables • 3 market-centric news briefs per weekd...

    $421 Average bid
    $421 Oferta medie
    21 oferte
    Real Time Crypto Updates
    S-a încheiat left

    I run a new cryptocurrency news feed that lives or dies on breaking market information. The goal is simple: deliver the very latest market updates and trends to my readers before the competition does. Your task is to scan trusted sources—official exchange announcements, CoinDesk, Bloomberg Crypto, verified Twitter accounts, on-chain analytics—and turn each relevant discovery into a concise, factual brief ready for immediate publication. Speed and accuracy come first. Every post must be written, proof-checked, and delivered within 30 minutes of the news breaking. I’ll share a style sheet, headline formula, and WordPress access; you can also hand in drafts through Google Docs if that’s faster for you. Deliverables • 3 market-centric news briefs per weekd...

    $38 / hr Average bid
    $38 / hr Oferta medie
    10 oferte

    ...IPN/webhook callbacks so paid orders are automatically marked as “paid” in my database. 3. Display the NowPayments-generated payment URL or embedded widget to the customer. 4. Add graceful error handling and fallback messaging. 5. Provide brief, commented code plus a short read-me so I can maintain the integration later. Acceptance criteria • A test order completes end-to-end with cryptocurrency and updates order status correctly. • Webhook verification follows NowPayments security guidelines. • No existing payment methods are disrupted. • All new code is committed via a clean pull request or delivered as a patch file. If you have hands-on experience with NowPayments (or similar APIs such as Coinbase Commerce, BitPay, etc.) and can ...

    $176 Average bid
    $176 Oferta medie
    71 oferte

    We are looking for partners who have personal connections with Canadian cryptocurrency users. We are not looking for outreach specialists to find strangers; we want you to reach out to your own circle of friends, colleagues, or acquaintances. Your Role: You will refer people from your personal network to participate in a 30–45 minute research interview (Meet). Your task is to ensure they meet our criteria, complete the intake form, and book a time slot. Respondent Requirements: • Personal connection: They should be people you know personally (friends, colleagues, etc.). • Location: Must be Canadian citizens or residents who have lived in Canada for at least the past 5 years. • Experience level: We need a balance of both beginners and experienced users. &b...

    $538 Average bid
    $538 Oferta medie
    10 oferte
    Real Time Crypto Updates
    S-a încheiat left

    I run a new cryptocurrency news feed that lives or dies on breaking market information. The goal is simple: deliver the very latest market updates and trends to my readers before the competition does. Your task is to scan trusted sources—official exchange announcements, CoinDesk, Bloomberg Crypto, verified Twitter accounts, on-chain analytics—and turn each relevant discovery into a concise, factual brief ready for immediate publication. Speed and accuracy come first. Every post must be written, proof-checked, and delivered within 30 minutes of the news breaking. I’ll share a style sheet, headline formula, and WordPress access; you can also hand in drafts through Google Docs if that’s faster for you. Deliverables • 3 market-centric news briefs per weekd...

    $471 Average bid
    $471 Oferta medie
    18 oferte

    Solaria World is a brand-new cryptocurrency portal that helps users trade, invest and learn, and it now needs a cohesive visual identity. The job covers three core assets: a primary logo, a browser favicon and a full set of social-media profile/cover images. The overall look should feel modern and sleek, built around a dark backdrop lit by energetic red-to-orange “solar flare” accents. I’d like the mark itself to weave together clean sun motifs with subtle cryptocurrency symbols so a visitor immediately understands both themes at a glance. I’ll need: • Scalable vector logo (AI/SVG) plus PNGs in common sizes • 32×32 and 48×48 favicons • Optimised header + avatar images for X, Facebook, LinkedIn and Instagram • A ...

    $88 Average bid
    $88 Oferta medie
    79 oferte

    I am fairly new to web app development and am currently working on my own project where I'm semi-vibe-coding in React. The app is a multivendor, cryptocurrency marketplace. I'm at the stage now where I've got my head around alot of concepts and everything is taking shape but I am now looking for an experienced, UK-based dev to sit with me in person and do a casual, loose review of my codebase structure, point out anything that would make it better and answer some questions that I have to fill in holes in my knowledge. My current setup: - React frontend (will eventually transition to NextJS) - NextJS backend - Github Ideally, I would also like this task to possibly open up the door to ongoing work on my project for the freelancer I award the project to. The re...

    $559 Average bid
    $559 Oferta medie
    67 oferte

    ...modern tech stack (, Firebase, Tailwind CSS). We're creating a vibrant community for streamers and their audiences. We are currently in a prototype phase and are looking for a skilled developer to help us implement a critical production feature. The Project: Production-Ready Payouts The core of this project is to replace our current simulated payout system with a secure, real-world cryptocurrency payment gateway. The goal is to allow our administrators to approve and process withdrawal requests from users, paying them out in USDT. Current State (Simulation) The current payout logic is a client-side simulation inside src/app/admin/withdrawals/page.tsx. It does not perform real transactions. // This is the function that needs to be replaced. async function processPayout( ...

    $2211 Average bid
    $2211 Oferta medie
    74 oferte

    I’m looking for ongoing, part-time support as I open and maintain institutional accounts on several cryptocurrency exchanges. All communication will happen interchangeably in English and Spanish, so you’ll need to feel equally comfortable in both languages. Your core focus is KYC/KYB compliance. Day-to-day you’ll be helping me collect and review corporate documents, schedule and conduct verification interviews with counterparties, and complete background checks so each application is submitted cleanly the first time. Whenever an exchange raises follow-up questions, you’ll liaise with their compliance desk, clarify requirements, and gather any additional paperwork until the account is approved. What makes this role interesting is the variety of jurisdictions...

    $610 Average bid
    $610 Oferta medie
    6 oferte

    ...app build is required at this stage. Core Objectives Model the end-to-end flow for payment-gated real-time bookings for high-demand services. Design a subscription layer that wraps booking access. At launch we will offer a single monthly plan; the architecture must support future plan tiers without refactoring. Define how to integrate common payment processors (credit/debit cards, PayPal, cryptocurrency) even though initial revenue is driven by subscription fees. Ensure the system supports autoscaling, enforces strict idempotency on booking calls, and audits every payment and booking event. Expected Deliverables High-level system architecture diagram (API gateway, services, data stores, cache, queue, payment webhooks, third-party integrations) Component-level descriptions...

    $1374 Average bid
    $1374 Oferta medie
    113 oferte

    I trade actively on DeltaExchange and now want to automate my momentum-based cryptocurrency entries and exits with clean, well-documented Python code. The goal is a single script (or small module) that connects to the DeltaExchange API, scans the supported perpetual futures universe, identifies momentum setups, places orders, manages positions, and logs everything for later review. Core requirements • Momentum logic: configurable look-back window, threshold and position-sizing formula so I can fine-tune risk/reward without rewriting the code. • Live trading & paper mode toggles that rely on the same functions, ensuring what I back-test is what I deploy. • Position management: automatic stop-loss and take-profit placement as soon as an order is filled, plus tr...

    $150 Average bid
    $150 Oferta medie
    5 oferte

    ... and after checking the card balance, if there is a discrepancy, the purchase should be canceled and the balance deduction reversed; if consistent, the purchase should be confirmed, inventory updated, and card delivery executed as a single atomic operation. 4. Low stock notifications must be sent immediately to the administrator account. 5. The internal balance ledger must always match the cryptocurrency top-up history on the chain. Build using your preferred Telegram bot framework or language. The source code must be clean and well-documented, and deployable on a standard VPS without additional license fees....

    $4343 Average bid
    $4343 Oferta medie
    3 oferte

    ...with CIS/Azerbaijan payment providers (M10, Kapital Bank, Payme, Click, etc.) - Secure payment processing implementation - Card payments, bank transfers, e-wallets integration - Deposit and withdrawal functionality - PCI DSS compliance knowledge - Experience with PHP, JavaScript, API integrations - Webhook/callback implementation - Transaction monitoring and reporting system Nice to have: - Cryptocurrency payment integration - Experience with gaming/entertainment platforms - Knowledge of regional payment methods (Azerbaijan, Russia, Turkey) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BUDGET & TERMS - Competitive rates based on experience - Long-term collaboration opportunity - Performance bonuses available - Flexible working hours - Remote work ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ...

    $1231 Average bid
    $1231 Oferta medie
    89 oferte

    I’m launching a new cryptocurrency and want it in front of active, genuine crypto investors on Twitter. I’m looking for someone who already manages (or can create and quickly grow) a crypto-focused Twitter account with a real, engaged following. The core task is product promotion: craft and publish a short series of tweets, threads, or spaces announcements that highlight my coin’s value proposition, build excitement, and drive traffic to our website and Telegram channel. Your audience should be demonstrably interested in trading, DeFi, or blockchain news—no generic tech crowd, please. What I need from you • A Twitter handle with a proven or rapidly provable crypto-investor follower base • A clear promotional plan: post formats, frequency, ke...

    $7 - $17
    $7 - $17
    0 oferte

    roject Description I am looking for a smart automated cryptocurrency trading strategy and either: receive an already implemented trading bot with that strategy, or have the strategy developed so it can be implemented into an existing bot framework. The bot must be fully functional, automated, and testable, and work with major centralized exchanges via API (e.g., Binance, Bitget, KuCoin, etc.). Project Requirements 1. Strategy Development Develop a smart trading strategy based on technical indicators, machine learning signals, statistical analysis, or proven market behavior. Strategy should aim for risk-managed profitable outcomes, with clear entry, exit, stop loss, take profit logic. Options include (but are not limited to): Grid trading Trend-following / breakout Mean-reversion Arb...

    $23 / hr Average bid
    $23 / hr Oferta medie
    50 oferte

    I have a short looping Lottie animation that shows several spinning cryptocurrency icons. The file was exported as JSON, so you’ll be working directly with that format (After Effects + Bodymovin, Haiku Animate or any editor you prefer is fine). All I need is to replace one of the existing coin logos with a new one while keeping the timing, easing and overall look identical. I’ll provide: • the current JSON animation • the source or vector asset for the coin that has to go • the vector SVG of the new coin logo that should take its place Deliverable: a clean, ready-to-use JSON Lottie file that drops straight back into my app with the updated logo seamlessly integrated—no extra layers or size changes. Please keep the color palette, rotatio...

    $25 Average bid
    $25 Oferta medie
    64 oferte
    Mobile App Development
    S-a încheiat left

    I need a seasoned mobile developer to deliver a production-ready iOS and Android app that runs on Binance Smart Chain. The core flow is simple: users sign up with multi-factor authentication, invite friends, and earn on-chain rewards in our own cryptocurrency token whenever their network engages with the app. Because every reward must settle transparently on BSC, the project requires both a well-structured smart contract and the mobile clients that interact with it. Referral codes have to be tamper-proof, balances must update in real time, and payouts must be visible on-chain so anyone can verify them through BscScan. On the mobile side I expect polished native performance—whether that’s achieved with Flutter, React Native, Kotlin/Swift, or true native code is up t...

    $702 Average bid
    Acord de confidenţialitate
    $702 Oferta medie
    146 oferte

    I’m looking for a clean, reliable way to pull live cryptocurrency prices from CoinMarketCap and CoinGecko once every hour and store them locally for later analysis. A lightweight Python script that hits the two sites’ public APIs, parses the latest USD prices for a list I can edit, and saves them to CSV or a simple SQLite/MySQL table would be ideal, but I’m open to another language if it meets the same goals. Key points I need the finished solution to cover: • Automatic scheduling so the call runs exactly on the hour without manual triggers (cron, Windows Task Scheduler, or an embedded loop with time-sleep logic are all fine). • Clear handling of API keys or rate-limit rules; if either site enforces limits, the script should back-off gracefully and l...

    $142 Average bid
    $142 Oferta medie
    88 oferte

    ...data • Transaction metadata • Automation workflow logs (n8n events) • Ensure data integrity and structured schema design. ⸻ AI Model Integration • Integrate AI models for: • Data processing • Prediction or recommendation features • Ensure seamless communication between AI services, backend, and front-end. ⸻ Payment Gateway Integration • Integrate payment gateways (Stripe, PayPal, Cryptocurrency). • Trigger n8n workflows on: • Successful payments • Failed transactions • Refunds or confirmations • Ensure secure and smooth transaction handling across web and mobile. ⸻ Code Quality & Deployment • Git-based version control. • Clean, modular, and well-documented code. • Environment...

    $513 Average bid
    $513 Oferta medie
    114 oferte
    Create 100K BSC Token
    S-a încheiat left

    I want to launch a brand-new cryptocurrency with a fixed supply of 100,000 tokens on the Binance Smart Chain. The coin must be deployed through a clean, well-commented smart contract and include native token staking so holders can lock tokens and earn rewards. Key expectations • Develop and audit the BEP-20 smart contract with staking logic built in. • Configure total supply at exactly 100,000 tokens and deploy first on a BSC testnet, then on mainnet once we confirm functionality. • Provide clear deployment instructions, the verified contract address, and source code (Solidity). • Supply a brief README that explains how to initiate staking, unstake, and claim rewards through common wallets such as MetaMask or Trust Wallet. Nice to have but not mandatory &...

    $544 Average bid
    $544 Oferta medie
    17 oferte

    I have built an ultra-secure automated platform to monitor cryptocurrencies on Coinbase Advanced Trade. I am in Canada, and this platform is hosted in America on a server dedicated solely to this project. It is now ready to be launched publicly. I am looking for someone who has the knowledge and resources to promote the product. It is a reliable and robust platform with the primary goal of security, designed to protect beginners from any possible scams or fraud. The platform monitors cryptocurrencies, and as soon as an increase occurs, it takes that crypto and converts it into USDC for the user, along with the profits. Users' cryptocurrencies never leave their Coinbase account, so they are fully secured by Coinbase and its strict rules. The platform is called AIM Gold, and you can see...

    $346 Average bid
    $346 Oferta medie
    21 oferte

    We need to upgrade an old cryptocurrency marketplace that now needs a coordinated, end-to-end upgrade. Both the client-facing frontend and the transaction-heavy backend have to move to the next level, so I’m looking for a seasoned project manager who can own the entire process—from roadmap to roll-out. The mandate • Frontend: drive a complete user-interface refresh, pairing a modern look with smoother navigation and fully responsive layouts. • Backend: harden security, streamline transaction processing, and ensure the new codebase scales without latency spikes. What I expect from you 1. Draft a clear project plan that breaks down milestones, resources, and risks. 2. Coordinate designers, blockchain engineers, and QA so each sprint ships on schedule....

    $38 / hr Average bid
    $38 / hr Oferta medie
    28 oferte

    I’m preparing a new series of email marketing campaigns and need a fresh, reliable database of verified cryptocurrency investors. These are individuals who actively put money into coins, tokens, or related projects—not just casual traders or miners—so the list must reflect real investment intent. What I’m looking for is straightforward: a current CSV or Excel file containing names, working email addresses, and any additional data points you can supply (country, phone number, investment range, coin preferences, etc.). Quality matters more than sheer volume; bounced or outdated contacts will not be useful for my outreach. If you already manage, curate, or have direct access to segments of the crypto community, I’d love to see a small sample first so I c...

    $15 - $25 / hr
    $15 - $25 / hr
    0 oferte

    I’m preparing a new series of email marketing campaigns and need a fresh, reliable database of verified cryptocurrency investors. These are individuals who actively put money into coins, tokens, or related projects—not just casual traders or miners—so the list must reflect real investment intent. What I’m looking for is straightforward: a current CSV or Excel file containing names, working email addresses, and any additional data points you can supply (country, phone number, investment range, coin preferences, etc.). Quality matters more than sheer volume; bounced or outdated contacts will not be useful for my outreach. If you already manage, curate, or have direct access to segments of the crypto community, I’d love to see a small sample first so I c...

    $151 Average bid
    $151 Oferta medie
    5 oferte

    ...game categories—Slot games, Card games, and Roulette—each running smoothly on desktop and mobile with provably fair logic and engaging front-end animations. Multiplayer modes aren’t required, so the focus can stay on delivering polished single-player experiences with quick load times and rock-solid random number generation. On the payments side, the platform has to accept Credit/Debit Cards, Cryptocurrency, and E-wallets, all routed through PCI-compliant or similarly secure gateways, with instant deposits and timely withdrawals. Key expectations • Customisable lobby and user account system • KYC/AML modules and geo-blocking where needed • Real-time reporting dashboard for wagers, payouts, and player activity • Bonus and promotion en...

    $278 Average bid
    $278 Oferta medie
    33 oferte

    ...transaction metadata, and automation logs. • Ensure data integrity and structured schema design. AI Model Integration • Integrate AI models for enhanced features such as data processing, prediction, or recommendations. • Ensure seamless integration of the AI models with the front-end and back-end. Payment Gateway Integration • Implement payment gateway integration (e.g., Stripe, PayPal, Cryptocurrency). • Ensure secure and smooth transaction handling for web and mobile apps. Code Quality & Deployment • Use Git-based version control. • Deliver clean, modular, and well-documented code. • Provide environment configuration and deployment scripts. • Follow production coding standards and best practices. --------------------...

    $1131 Average bid
    $1131 Oferta medie
    135 oferte

    I am putting together a token-based multi-level marketing program on the Binance Smart Chain and need an experienced blockchain developer to turn the concept into a secure, fully tested smart-contract suite. Here is what I already know I want: • Cryptocurrency tokens on BSC (BEP-20 standard) • A built-in referral system that automatically assigns uplines and downlines • Precise commission tracking across every level, viewable on-chain • End-to-end smart contract creation and deployment, ready for mainnet You will code, test, and hand over the contracts, plus a short README explaining how to interact with each function from a Web3 front end or a simple script. Gas efficiency, re-entrancy protection, and upgrade-safe architecture are non-negotiable acceptan...

    $2040 Average bid
    $2040 Oferta medie
    8 oferte

    ...its digital twin. User Roles: Separate login portals and dashboards for Brands, Sellers, and Buyers. Bidding & Sales Engines: Implementation of both fixed-price listings and auction-style bidding. Blockchain Infrastructure: A decentralized application (dApp) initially running on the Ethereum blockchain, utilizing cross-chain interoperability. Native Crypto Economy: Integration of our own cryptocurrency to facilitate exchanges, including a system for Initial Coin Offerings (ICO). Incentive & Reward System: A "Trust-Based" reward model where stakeholders (Sellers, Buyers, and Miners) receive AirDrop coins for successful transactions, secure packaging, and uninterrupted delivery. Royalties: Automated royalty payments to Brands from every secondary sale. Tec...

    $388 Average bid
    $388 Oferta medie
    11 oferte

    I am looking for an experienced AI Video Creator to produce two high-quality, professional videos for a new cryptocurrency project. The videos will be used for marketing on social media, YouTube, and the project website. Deliverables: Video 1: Introduction Video (60-90 seconds) Goal: Introduce the project, the problem it solves, and its mission. Style: Cinematic, futuristic, and high-energy (crypto-native style). Voiceover: Professional, engaging female AI voice. Video 2: Feature/Explainer Video (90-120 seconds) Goal: Explain the key technical features, tokenomics, and user benefits. Style: Clear, informative, and visual (utilizing screen recordings or, motion graphics). Voiceover: Clear, calm, and authoritative female AI voice. Requirements: Expertise in AI video tools (e.g., HeyGe...

    $103 Average bid
    $103 Oferta medie
    2 oferte

    ...looking for an experienced freelance developer with prior experience in cryptocurrency exchange development to assist with a small and well-defined feature enhancement on our existing platform. The platform is already operational, and this task focuses only on adding or modifying a limited set of functionalities rather than full system development. Scope of Work Review the existing exchange-related codebase Implement a simple feature addition or improvement (details will be shared after initial discussion) Ensure the new feature integrates smoothly without affecting existing trading, wallet, or order-matching logic Perform basic testing to confirm correct functionality Requirements Proven experience in cryptocurrency exchange or trading system development Familiar...

    $251 Average bid
    $251 Oferta medie
    24 oferte
    Developer
    S-a încheiat left

    Platinum by ETL; Combining our experience in the crypto/digital asset space, as well as ETL global’s expertise in legal, accountancy & tax matters, we are looking to target HNW/UHNW individuals with significant assets in cryptocurrency. The goal is to assist them in incorporating digital assets into their day-to-day accounting & legal matters, with an additional focus on how these assets can be passed along to heirs as part of a trust/inheritance set-up. Core product: “The Vault”- This product will be a secure multi-sig/ MPC wallet (Hosted by DFNS). Core functionalities: Frontend design to be high-class, slick, professional. (Please see below a link to the website which is in development: , for you to get an idea of the design we have gone for) AWS

    $10866 Average bid
    Urgent
    $10866 Oferta medie
    118 oferte

    ...electronics engineer to design and put into production a hardware design for a wearable gadget that functions as a cryptocurrency transaction system. You will be given a completed spec for functionality and logic including all of the cryptographic algoriths. The hardware design and production is all that remains to be done. Key requirements include: - Robust security features (e.g. encryption, PUF) - Durable and lightweight design for wearability Ideal skills and experience: - Experience in developing secure electronic devices, especially in the cryptocurrency domain - Strong background in UX/UI design for wearable technology - Knowledge of the latest security protocols in cryptocurrency transactions - Proficiency in hardware and software integration Please pro...

    $5302 Average bid
    $5302 Oferta medie
    22 oferte

    ...Node.js. I now need a developer who can complete the remaining core features so we can launch. Key tasks • Extend my existing custom authentication system so users can register or log in, then view a personal dashboard that shows their username, email, recent activity, and full transaction history. • Implement a secure deposit flow. Users must be able to load funds via credit/debit card and cryptocurrency; the balance should update instantly and be stored safely for play. • Build the probability logic for each box. For example, the “Apple” box might give an iPhone 17 at 0.1 %, lower-tier Apple accessories at various midsized odds, and an iPhone cable at 40 %. Every box needs configurable drop rates that can be edited from the backend and served accurat...

    $602 Average bid
    $602 Oferta medie
    109 oferte

    ...Access • Authentication: Implement a robust User ID/Password system. Include Social Login (Google/GitHub) and Two-Factor Authentication (2FA). • Gated Content: Only registered applicants with active subscriptions can access the recorded video library. • Video Infrastructure: Integrated secure video player with anti-piracy measures (e.g., preventing right-click downloads). 2. Payment Gateway & Cryptocurrency Integration • Fiat Payments: Integrate a payment aggregator (like Razorpay or Stripe) to support Credit/Debit Cards, UPI, PhonePe, Google Pay, and Paytm. • Crypto Payments: Integrate a decentralized gateway (like Coinbase Commerce or BTCPay Server) to accept BTC, ETH, BNB, Doge, and Solana. • Invoice Generation: Automated PDF receipts for ever...

    $204 Average bid
    $204 Oferta medie
    8 oferte

    ...install OpenAI Whisper and teach me on how to transcribe two WhatsApp voice-note chats that I already have. Please connect to my machine via AnyDesk, walk me through every step (Python environment, dependencies, model download, command line or short script, and the export of the text files), and leave me with a clear written guide so I can repeat the process alone next time. Second, I have a cryptocurrency trading bot coded in Python that compiles without errors. I only need you tu run it and teach me how to do it by my side, after I insert some correct parameters. I’d like you to show me where and how to feed those parameters, then set up an automated schedule (Windows Task Scheduler, a small loop with sleep, or any clean solution you recommend). When we finish, I shoul...

    $18 Average bid
    $18 Oferta medie
    1 oferte

    The goal is to have an experienced trader actively manage both my gold exposure and my cryptocurrency portfolio. For crypto I want a pure day-trading approach—fast entries and exits that capture intraday moves on majors or selective altcoins. For gold the mandate is different: a disciplined hedging strategy that protects downside risk while allowing upside participation, whether through futures, options, or ETF instruments. I will provide the trading capital and broker / exchange access once we agree on risk limits, draw-down ceilings, and profit-sharing terms. Please be able to verify your track record with live account statements, Myfxbook, TradingView, or equivalent P/L reports, and be comfortable staying within predefined risk parameters. Deliverables • Written...

    $172 Average bid
    $172 Oferta medie
    4 oferte

    I need a clear, data-driven assessment of several cryptocurrency assets before I commit new capital. The work centres on investment analysis, not general market commentary, so every conclusion must be backed by numbers I can trace. Here’s what I need from you: • A comparative valuation of the coins and tokens I list, using recognised metrics such as on-chain activity, network value-to-transactions, and discounted cash-flow proxies where relevant. • Scenario-based forecasts that show best, base, and worst-case returns over the next 6–12 months, with assumptions stated explicitly. • A risk profile covering volatility, liquidity, counter-party exposure, and regulatory considerations, supported by Value-at-Risk or similar models. • An actionab...

    $533 Average bid
    $533 Oferta medie
    6 oferte

    I’m building a new YouTube channel that focuses on cryptocurrency news and education, and I need a crisp visual mark to anchor the brand. The look I’m after is unmistakably minimalist—clean lines, no unnecessary décor—rendered solely in black and white so it stands out whether viewers are in light or dark mode. Because the channel revolves around digital coins, I’d like the design to weave in a coin or currency symbol element. Think subtle integration rather than a literal pile of coins; the goal is a smart nod to crypto that feels modern and uncluttered. Here’s what will make the project a success for me: • Primary deliverable: a vector logo (AI/SVG) plus high-resolution PNGs with transparent backgrounds. • Variations: square...

    $101 Average bid
    Urgent
    $101 Oferta medie
    27 oferte

    Top Articole ale Comunității cryptocurrency