I'm in need of a skilled web developer to help create an e-commerce website. The primary functiona...create an e-commerce website. The primary functionality of this site will revolve around order processing. Necessary features should include: - Shopping Cart: This is crucial for users to be able to collect products before checking out. - Product Search: Visitors should easily find specific products they are looking for on the website. - Secure Checkout: Security is crucial, the checkout process needs to be safe and secure for users to input payment details. Ideal candidates would have experience with creating similar e-commerce websites and an understanding of user registration process is beneficial. Knowledge of inventory management would also be beneficial, ho...
Project for storefront vinyl, indoor wall vinyl, and checkout desk work.
I'm looking for a skilled Magento developer who can smoothly upgrade my current store running on Magento 2.4.3 to version 2.4.7. The time frame for this project is flexible, so you can work at a pace that ensures high quality results. Key Requirements: - Rich experience in Magento upgrades, specifically from 2.4.3 to 2.4.7. - Ca...Requirements: - Rich experience in Magento upgrades, specifically from 2.4.3 to 2.4.7. - Capability to handle any related issues and transitions that might arise during the upgrade. Please note, while this project doesn't require any new feature additions or functionality improvements, proficiency in implementing advanced aspects such as product recommendations, advanced search filters, and one-step checkout will be a huge plus for potential fu...
...sell both ready-made and custom-made conveyor parts. Key Elements: - Both ready-made and custom-made conveyor parts should be presented clearly on the website. - I want the ability for customers to input their desired size dimensions and material type for the custom-made parts. - The store should have a sleek, user-friendly design to facilitate easy navigation and product customization. - The checkout process should be smooth and secure. - Work with current internal systems to integrate and streamline flows. - Work constructively with current in-house developer. Ideal Expertise: - Prior experience in developing e-commerce platforms, especially those involving customization options. - Proficiency in front-end and back-end web development. - Knowledge of security protocols for...
I'm in need of a WordPress developer who can help me with a specific customization on my WooCommerce site. Here are the details: - Custom Checkout Process: I'm looking to add some custom fields to my checkout process. Specifically, I need a text input field for customers to provide special instructions. This will help me better understand their preferences and needs. The ideal candidate should have: - Proven experience with WordPress and WooCommerce - Strong knowledge of PHP, HTML, CSS and JavaScript - Experience in customizing checkout processes - Good communication skills and ability to understand and implement the requirements accurately You should be able to work independently, take initiative, and provide a solution that is both functional and visual...
I'm looking for an experienced developer to integrate a payment plan feature to my website. Currently, I accept credit card and PayPal payments through PayPal gateway. The website is running on Shift4Shop. Key Requirements: - Implement a payment plan feature on the website that allows customers to choose 2 or 3 payment installments. - Ensure the payment plan is processed smoothly and securely, utilizing the existing PayPal payment gateway. The ideal freelancer for this project should have: - Proven experience in integrating payment plan features on e-commerce websites. - Proficiency in working with Shift4Shop and the PayPal payment gateway. - Strong understanding of e-commerce user experience and security considerations.
We're in need of an experienced professional who can complete my WooCommerce and WordPress sites with a focus on design customization, product page setup, and payment gateway integration. We have a specific set of tactics that I need implemented on both sites, all of which have been pre-defined. The ideal candidate should have: - A strong background in customizing WooCommerce and WordPress development - Experience with design customization - Proven expertise in API for manufacturer - Able to meet for daily sprints during United States business hours, Central Standard Time zone. Please only apply if you have a portfolio demonstrating your successful completion of similar projects. PROJECT - $500 We will not respond to offers higher than the project price. VIDEO - we w...
I'm looking for an experienced Laravel developer to enhance my existing website with user authentication, database integration, and payment processing and many other things. Ideal Skills & Experience: - Strong proficiency in Laravel, with a good understanding of its ecosystem and the ability to work on existing codebase. - You must also have experience with front-end development as Vue.js. Please only apply if you have a portfolio that showcases your Laravel projects and are comfortable working on an existing codebase. I have more than 15 years experience with developing websites, so you will work together with me. As I don't have much time, then you will develop the code and I will instruct you. Maximum hourly rate is: 10 dollar We are talking about long term w...
I'm in need of a professional and interactive e-commerce website to sell my range of physical and digital products. We'll start with less than 50 products but the site must be scalable for future growth. Key Features: - Product listing and management - Shopping cart and secure checkout - User register and login - Payment gateway integration - SEO-friendly URLs Ideal Candidate: - Proven experience in e-commerce website development - Familiarity with popular e-commerce platforms - Proficiency in frontend and backend technologies Your proposal should include relevant work samples. Looking forward to a successful collaboration.
I'm seeking a developer to integrate Stripe's one-time payment feature into my mobile application. The app is designed for both iOS and Android platforms. I get this error from stripe: We've noticed that your Stripe integration has errors because you're trying to integrate using the Sources API. This API has been deprecated, and we are no longer allowing new integrations. Please migrate to the Payment Intents API and follow our guide to accept payments. Can someone fix this?
Need customer checkout in woocommerce. Taylored to our customers needs.
...dynamic UPI payment system for my betting website. This project is specifically focused on payment integration, particularly with Chinese payment gateways, to resemble the seamless experience found on and TC Lottery betting websites. Key Requirements: - The primary function of this project is to integrate UPI payment methods into the current website, ensuring it mirrors the fluidity of transactions seen on 91club.club. - The payment system should support multiple UPI apps, providing a user-friendly, versatile experience for our customers. User Experience: - The payment process should be designed to be simple and quick, with minimal steps involved to complete a transaction. Ideal Skills: - Previous experience with UPI payment systems,...
...label manufacturing company. The key features of this project would be: - Custom Calculator with Advanced Calculations: I need an expert to create a custom calculator with advanced calculations and customization options. It should also integrate with our product database to ensure accurate pricing based on the user's selections. - Checkout Page: A smooth and user-friendly checkout page is crucial in our website. The freelancer needs to ensure that the checkout process is engaging and seamless for our customers. Design Preferences: The website needs to have a clean and minimalist design. Please ensure that the design is aesthetically pleasing, easy to navigate and compliments our branding. Content Management: Once the website is launched, I plan to manage the...
I'm seeking an experienced developer to create a minimum viable product (MVP) of a rent payment system with a reward component. The project involves building a user app, a landlord app, and an admin portal. Specifically, the user app should: - allow tenants to make rent payments through the app - provide a reward system for timely payments The landlord app should include: - functionality for managing rent payments - tools for monitoring the reward system The admin portal must have: - user management features - landlord management capabilities - transaction tracking functionality I'm looking for a developer who is not only skilled in app development, but also understands the dynamics of rent payment systems and reward programs. Experience with both front-end and...
...form filling and payment processing. Here's a breakdown of the key functionalities: - User Roles: The system will have three core user roles - Admin, Doctor, and Subadmin. The Admin will have the highest level of access and control, managing user roles, form submissions, and payment links. The Doctor will primarily be responsible for filling out forms and creating payment links. The Subadmin will receive completed forms and process payments. - Admin Capabilities: The Admin user should be empowered to manage user roles and permissions, view and edit all forms and payment links, and generate reports. This will be crucial for maintaining the system and monitoring its performance. - Doctor Responsibilities: Doctors will be primarily engaged in filling out...
I am looking for a skilled developer to create a customized iOS and Android app for my e-co...seamless and intuitive user interface, ensuring a smooth shopping experience for customers. - As I'll be selling physical goods, the app should be capable of handling product listings, inventory management, order processing, and customer notifications. - Integration with a secure and reliable payment gateway is a must, although I'm open to suggestions in this area. I'm seeking a developer with experience in building e-commerce apps, particularly those integrated with WooCommerce. Prior experience in handling payment gateways would be a definite plus. Your ability to create an app that is not only functional but also visually appealing and user-friendly will be crucial...
I need a thorough and urgent testing of my e-commerce website. Key Areas of Testing: - User Interface and Experience: I need to ensure my customers have a seamless and intuitive journey on the site. - Security Features: Security is a top priority. I need to guarantee that all transactions are secure. - Checkout Process: An efficient and easy checkout process is crucial for sales. This needs to be tested thoroughly. - SEO and Google: I need an evaluation of the current SEO standards and performance on Google. As the project is urgent, I need someone who can commit to completing the testing quickly while maintaining a high standard of quality. Ideal Skills: - Experience in E-commerce Website Testing - Proficiency in User Experience and Interface Testing - Knowledge of E...
...website developer to help me create an e-commerce website specifically designed for food ordering. Key Features: - Shopping Cart: A user-friendly shopping cart feature is essential, allowing customers to easily select and store their desired food items prior to checkout. - User Registration and Login: It's vital that users can register and create accounts, making the process of repeat orders and order tracking seamless and efficient. - Payment Gateway Integration: A solid and secure payment gateway is crucial to accommodate a variety of payment methods and protect customer transactions. Target Audience: - This food ordering website is aimed directly at individual customers, so the design and features must be attuned to individual consumer preferences a...
I'm looking for a professional Flask and Python developer to help me implement a user management system for my website. The user management system should have Social Media login integration. Additionally, I would like the selected developer to set up a payment gateway and a MySQL database. Ideal Skills: - Proficient in Flask and Python - Experience in implementing user management systems with social media login integration - Proficient in setting up payment gateways - Proficient in working with MySQL databases
...filtering - User registration and login - Shopping cart and checkout - Spin & Win game, like - Easy login with Google sign-in Design: - type branding guidelines for the design - Open to suggestions from the designer - Aiming for a user-friendly design both on web and mobile views Payment Integration: - Cash on delivery - Razorpay Ideal Skills and Experience: - Proven experience in ecommerce website development - Familiarity with product search and filtering, user registration and login, shopping cart and checkout functionalities - Prior experience in integrating unique features like the 'Spin & Win' game - Proficiency in UI/UX design for both web and mobile - Experience with Cash on Delivery and Razorpay payment gateways Design: - No s...
...- User registration and login - Shopping cart and checkout - Spin & Win game, like - Easy login with Google sign-in Design: - No specific color scheme or branding guidelines for the design - Open to suggestions from the designer - Aiming for a user-friendly design both on web and mobile views Payment Integration: - Cash on delivery - Razorpay Ideal Skills and Experience: - Proven experience in ecommerce website development - Familiarity with product search and filtering, user registration and login, shopping cart and checkout functionalities - Prior experience in integrating unique features like the 'Spin & Win' game - Proficiency in UI/UX design for both web and mobile - Experience with Cash on Delivery and Razorpay payment gateways I&...
...want the site to have a feature for user reviews and ratings. This is crucial for boosting credibility and attracting more customers. - **Inventory Management**: I prefer the system to automatically update inventory based on sales. I want a seamless experience for my customers, with accurate information on product availability. & user-friendly login, checkout page Already i have - hosting, domain, Brand logo, Elementary Pro , razor pay payment gateway Ideal applicants for this job should have: - **Ecommerce Website Design Experience**: A solid portfolio showcasing ecommerce websites they have designed will be an advantage. - **Understanding of User Experience**: I'd like to work with someone who understands the importance of user experience in ecommerce. - **...
I'm looking for a skilled developer who can create a seamless integration of PayPal and Stripe as payment gateways on my WordPress website. Key Requirements: - Creation of Invoice & Payment Plugins: I need both the invoice and payment plugins to be designed and implemented on my WordPress site. - Integration of PayPal and Stripe: The two main payment gateways I'm looking to include are PayPal and Stripe. These need to be cleanly and efficiently linked to the respective invoices and payment process. The ideal freelancer for this job would possess: - Proficiency in WordPress: Extensive experience in working with WordPress and creating custom plugins. - Payment Gateway Integration: A good understanding of PayPal and Stripe integration...
I am looking to develop an eCommerce platform specifically designed an...minimalistic Anti-tarnish jewellery targeted to yound as well as middle aged adults. Features: - User-friendly interface to display the jewellery collection - Secure shopping cart system with secure payment gateway - Optimized product pages for SEO Ideal Skills: - Proven experience in eCommerce website development - Knowledge in SEO optimization - Understanding of branding and product photography - Experience in targeting products to young adults. The objective is to create an engaging and easy to navigate platform where customers can view and purchase minimalistic jewellery, having a secure checkout and excellent customer experience. I am looking for freelancers with relevant experience in buildin...
i need his task in 1 hour Max Hello I'm looking for an helper with two pressing issues related to emails and checkout form. 1 - Email Issue: For some reason, my WooCommerce site is not sending emails properly. 2 - Checkout Form Modification: I also need to make some modifications to the checkout form.
...WooCommerce expert to help with two pressing issues related to emails and checkout form. - Email Issue: For some reason, my WooCommerce site is not sending emails properly. I need this issue fixed so that customers receive order confirmations, shipping details, and other necessary emails in a timely and reliable manner. - Checkout Form Modification: I also need to make some modifications to the checkout form. I'm looking to possibly add or remove certain fields, change the labels of some, and possibly customize the design a bit. Ideal candidates for this project should have: - Proven experience working with WooCommerce, and a deep understanding of its email system. - Experience in customizing WooCommerce checkout forms. - Proficient in troubleshootin...
...and dietary restrictions. Whether it's requesting extra toppings, specifying cooking instructions, or opting for alternative ingredients, Dine0ut ensures that users can tailor their orders to suit their taste. Seamless Ordering Process: Ordering food through Dine0ut is a breeze. Users can add items to their cart with a single tap, review their selections, and proceed to checkout effortlessly. The app supports multiple payment options, including credit/debit cards, digital wallets, and cash on delivery, making transactions convenient for users. Real-Time Updates: Dine0ut keeps users informed about the status of their orders in real-time. From confirmation notifications to updates on preparation and delivery, users can track the progress of their orders every step of ...
...e-commerce site that includes a range of payment options, and will be easy to navigate for my potential customers. Key requirements: - Transform basic GoDaddy page into a full-fledged, visually appealing e-commerce site - Integrate payment methods such as Credit card, PayPal, and wire transfers - The site will have less than 10 pages, so it should be concise yet informative - Ensure optimal user experience and easy navigation for customers, especially at the checkout process - Include sections for company information, product images, and other relevant details Ideal skills and experience: - Prior experience in creating e-commerce websites is a must - Proficiency in web design with a keen eye for aesthetics - Familiarity with integrating various payment gate...
I'm seeking an experienced Shopify designer to create an online store for my business. The aim is to provide a seamless shopping experience for customers. Key Requirements: - Design a user-friendly, engaging, and responsive online store - Incorporate essential e-commerce features such as product categorization, search functionality, and a secure checkout process - Ideally, the design should reflect the nature of the industry without sacrificing usability The successful candidate should have: - Proven experience in designing successful e-commerce websites, preferably on the Shopify platform - A keen eye for user experience and an understanding of effective e-commerce practices - Strong communication skills to ensure our vision and brand identity are accurately represented in t...
First milestone: 250 - Register - Login - Before login approve admin authorization - We will show product price on Product listing page for Trade users only Seconf milestone: 200 - Trade user can add product from product details page to cart and checkout and place order without payment - we will send order details mail to User email and Admin email both - Show different price based on user country, for UK and China, admin will add both price in each product manually and it will show on frontend based on user's country - I will add one product only of any one category to demonstrate to how to add products and for test
I'm in need of a skilled PHP Yii 2 developer to create a robust platform with user authentication, API integration, and a payment gateway. Key project requirements: - Use1. We've implemented razor pay in frontend but in backend it's phone pe so order I'd is not coming we've to fix that 2. Currently login sign up is email id and password we've to change that flow to phone number OTP login and it's already there for forgot password flow we've to modify that and use it for login 3. Once payment is successful then there's an appointment booking api that needs to make an appointment there's small fixes in it 4. There's a doctor's profile api where it should give doctors fee sometime it's not coming These are ...
...primary platform for my business, and therefore needs to be built with high quality and user-friendliness in mind. Key Requirements: - The site should be visually appealing and easy to navigate for potential customers. - It should have a seamless checkout process, with secure payment integration. - The website must be designed and optimized for mobile users as well. Skills and Experience Needed: - Proven experience in e-commerce website development - Strong understanding of user experience and design principles - Proficiency in integrating popular payment gateways, specifically Credit card and PayPal - Knowledge of SEO is a plus, to ensure the site is optimized for search engine visibility. This project is a great opportunity for a skilled web developer to show...
...rent payment functionality. Key Features: - Only 2 pages: Homepage and Rent Payment Page. - The homepage will be minimal, showcasing only a brief introduction and a clear call-to-action leading to the rent payment page. - Rent Payment Page: This is the core of the website, where tenants can easily submit their rent payments. The rent payment should be simple and user-friendly. Functionality: - The payment process should be direct and hassle-free. - I want the payments to go directly to my personal account. Ideal Skills: - Proficient in web development with experience in building simple, yet functional websites. - Familiar with integrating payment gateways for a seamless transaction process. - Strong understanding of user experience...
I'm looking for an expert in custom-built web solutions to create a sleek, single-page website with a professional and formal design aesthetic. This website should have the core functionality of processing credit card and debit card payments, thereby aligning with the e-commerce standards. Key Requirements: - Experience with custom-built websites. - Expertise in payment processing integrations. - Proven ability in creating professional and formal website design. - Understanding of best practices for one-page site layout. Looking forward to hearing from those who can achieve these goals efficiently and effectively.
...need of a skilled web designer to give my ecommerce website a modern and responsive makeover. The designer must be able to deliver a fresh and easy-to-navigate user interface. Although I've not specified any particular areas for redesign, potential areas to focus on could be: - Revamping the homepage layout - Improving product pages for a more engaging product presentation - Optimizing the checkout process for a seamless user experience I won't be able to provide an exact number of products on the site as that detail was skipped, but the designer should be prepared to handle a flexible number of products. Additional features or functionalities were not specified, however, innovation is encouraged. Proposals suggesting interesting functionalities such as product se...
I'...setting up a system for offline payments. The primary aim is to offer more payment options for customers who are not comfortable with online transactions. Key Responsibilities: - Implement a secure and user-friendly offline payment method, specifically bank transfer, for domestic transactions. - Ensure a smooth payment process for customers who prefer not to use online payment methods. - Set up a system that is compliant with local business regulations. Ideal candidates should have experience in: - Payment systems and methods, especially bank transfers. - Understanding of the benefits and challenges of offline payment systems. - Compliance with local business regulations. - Prior experience in setting up offline payment systems i...
We are seeking for a developer to build a transportation app with Laravel and VueJS on web part, and flutter for mobile. A part of the system is already built. The github repositories will be shared. Documents and wireframes will be shared too. The system is composed of three parts: -Booking website: from where the clients book vans -Fleet management back-office: from where cars an trips are managed. Cars have a planning filled with booked trip. The main challenge is the availability calculation, that has a complete document wrote down. -Flutter mobile app for drivers, to check there schedules, and do reports (app already coded, to complete) It may need confirmed experience given that the initial developer (intermediate) had some difficulties winding it up. I stay at your disposal to provi...
I am seeking a savvy and experienced freelancer who can meticulously reconcile my entire accounting ledger and accurately track any pending payments. Here's a snapshot of what I need: - Accounting reconciliation: Thoroughly reconcile my entire accounting ledger, identifying and correcting any discrepancies. - Payment Tracking: Identify any outstanding payments and create a simple, effective system for future tracking. Although I did not specify an accounting software, familiarity with common systems like QuickBooks, Xero, and Zoho Books will be advantageous. You should excel in number-crunching, have a keen eye for detail, and a track record in similar projects. Advanced knowledge of accounting principles is also expected. Applying freelancers should bear in mind that ...
...looking for a skilled Shopify developer to help me revamp my current online store. The objective is to improve conversion rates through a more user-friendly and engaging shopping experience. Key Improvement Areas: - Homepage layout: I want a simplified navigation menu and a well-placed featured product section. The simpler and more intuitive the layout, the better. - Checkout process: I aim to switch to a one-page checkout system. This will help streamline the purchasing process and hopefully reduce cart abandonment rates. Ideal Candidate: - Proficient in Shopify development with a good understanding of e-commerce conversion practices - Experienced in UX design and knowledgeable about creating engaging online shopping experiences - Able to work with me to understand th...
I'm looking for a skilled WordPress developer to help establish an e-commerce shop for my clothing store on 3 of my we...they're easily navigable. - As I don't have product images, you'll have to create them. A good eye for design and someone who is good in canva pro and a knack for creating appealing visuals will be a big plus. - I'd like a sleek, modern design for the store that's both user-friendly and visually appealing. - The shop should have a simple and secure payment gateway integrated which I think it does but not 100 percent sure for a smooth checkout process. - SEO optimization for the shop would be a bonus. In summary, the ideal freelancer for this job would be proficient in WordPress and WooCommerce, have a good design sense, and...
...configuring Shopify's support settings, and custom coding for seamless integration. Profiles & Orders: Technical Details: Enhancing user profiles involves setting up a profile system, configuring Shopify's profile settings, and custom coding, ensuring easy access to order history and seamless integration with the platform. Cart & Checkout Optimization: Technical Details: Optimizing the cart and checkout process involves setting up a streamlined flow, configuring Shopify's checkout settings, and custom coding for seamless integration. Each feature requires careful planning, design, and integration with the Shopify platform, utilising native functionalities and custom developments where necessary. Development of a Mobile App Technical Detail...
I'm looking for a skilled developer with Square Space experience for some specific updates on my site. Key Requirements: - Custom message on checkout: This needs to be displayed with the product we're calling the custom message product. - Delivery calendar with availability: This needs to be integrated onto the checkout page.
...the event creation process. This should allow for easy, seamless ticket sales and registration. - Attendance Registration: Attendees should be able to register for the event through an online form. This form should capture key details and contact information. - Payment Integration: The system should facilitate ticket purchases by integrating Credit/Debit Cards and PayPal or other options too. Ideal candidates should possess: - Proven experience with Zoho Creator. - Strong understanding of event management systems. - Expertise in payment gateway integrations. - Prior experience in designing registration forms. I need help with the following things I need assistance with setting up four events and integrating them into the form flow. Here’s the detailed process: 1....
Hi, This project is for one of my clients. I am a web developer myself just busy with other projects; so don't play tricks with price. I am looking for a normal WooCommerce Project: -Arabic RTL and English LTR (Already have WPML Licens...tricks with price. I am looking for a normal WooCommerce Project: -Arabic RTL and English LTR (Already have WPML License). -Not Multi-Vendor. - Must be appealing. -Responsive. -Secure. -Fast -I will be adding the products, descriptions, and images, and some products have videos. -Shipment will be done manually. -On the checkout page, the user needs to pin his location on Google map Payment gateway: -Apple Pay - At the end, there will be training for the client. Payment terms. 3 Milestones: - First draft -Final submission -After ...
I am looking to build a dynamic E-commerce website for selling cameras and their accessories. Key features should include: - Product Catalog Management: Allow easy addition, modification, and deletion of products. - User Registration and Login System: Secure login to streamline the purchasing process. - Shopping Cart and Checkout System: For a seamless online shopping experience. Though I do not have a specific design in mind, I am open to your professional suggestions. The site should look dynamic yet be user friendly, allowing customers to find what they need with ease. I'd prefer a Multi-Level Navigation structure (drop-down menus) for the website, creating organized categories and subcategories for our various products. Ideal candidates for this project should have a ...
I'm on the lookout for a proficient Zoho Creator specialist to assist me in developing an efficient event management system with integrated payment options. Key requirements include: - Assistance in creating event templates for 1-5 different types of events. - Setting up customized attendance registration forms with Zoho Creator. - Integrating secure and user-friendly credit/debit/online payment systems. Ideal candidates should possess: - Proven experience with Zoho Creator. - Strong understanding of event management systems. - Expertise in payment gateway integrations. - Prior experience in designing registration forms. Looking forward to discussing the project further with you.
I am in need of an experienced app developer who can build a robust e-commerce app for iOS and Android. This should be user-friendly and targeted towards general users. It’s crucial that the app includes a payment module with end-to-end encryption. The ideal candidate would have: - Expertise in both iOS and Android app development - Prior experience with building e-commerce applications - Strong understanding of payment gateway integration, and knowledge of implementing end-to-end encryption - Familiarity with creating seamless user interfaces targeted towards general, non-technical users The envisioned app should ultimately facilitate smooth online transactions, assuring users of their data security. This project may require further maintenance and updates, th...
...menus and everything regarding to the design. We will fill it up later with the right content. + Start page + main categorie side + under categorie side + article page - our design team will assits you by questions. - you have to import the articles from our actually side to the new development side - modify the checkout based on the customer requirements - If this work is running smoothly and good, we can work on a hourly base as well for several add ons by this new page. Could be a long term relation ship. Key requirements and responsibilities include: - Implementing the design I provide using Elementor and the WoodMart theme - Ensuring the website is optimised for e-commerce, with a particular focus on enhancing
Prepare a comprehensive documentation on payment gateway project and docking new payment channel * Make a comprehensive documentation on environment setup, backend project run procedure, frontend project run procedure * Documentation on how to dock a new payment channel
