
Chainstack is a blockchain node platform that powers global Web3 applications across fintech, DeFi, wallets, custodians, gaming, AI agents, trading, and analytics.
Chainstack's core products include Global Node, low-latency RPC endpoints for everyday workloads; Dedicated Node, single-tenant nodes with guaranteed resources for heavy workloads; reliable infrastructure built for trading bots and MEV strategies; and Unlimited Node, an add-on for unmetered request scaling. Together with Chainstack Self-Hosted for teams that need infrastructure on their own premises, these products cover every stage from prototyping to institutional-scale deployment.
Chainstack supports major blockchain networks, including Ethereum, Solana, BNB Chain, Polygon, Hyperliquid, Arc, Robinhood Chain, and other EVM-based and non-EVM chains, with elastic (auto-scaling) and dedicated node instances across mainnet and testnet. For Solana-focused trading and MEV operators, Chainstack offers the Yellowstone gRPC Geyser plugin for real-time on-chain data streaming and Jito ShredStream for low-latency transaction propagation.
Deployment options span the public cloud, preferred service providers, or fully self-hosted infrastructure, all managed through a single console with standardized node management across chains and environments. Core infrastructure features include global load-balanced RPC endpoints, blockchain data APIs, node monitoring, and request-unit-based usage tracking, keeping performance predictable and costs transparent as usage grows.
Chainstack offers a free Developer plan alongside paid Growth, Pro, Business, and Enterprise plans, so teams can start building at no cost and scale into preferred infrastructure setup as usage grows.
Teams cut time-to-market, cost, and risk with a single platform for blockchain nodes, whether in the cloud, through a preferred service provider, or self-hosted. Standardized node management across chains and environments puts reliability on autopilot and keeps performance predictable.
Operators get control and transparency, while developers get a consistent way to build and scale. Fintech companies, DeFi protocols, wallets, custodians, trading firms, analytics platforms, and Web3 service providers running fleets use Chainstack as the fastest way to run reliable, predictable blockchain nodes at scale.
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eMembership is labor union software, built for the way locals actually run. It brings member records, dues, employers, contracts, grievances, organizing, dispatch, communications, and member self-service into one system, so your staff can stop juggling spreadsheets and disconnected tools. More than 55 labor unions across the US and Canada run on eMembership, and most of them are locals.
The platform has 18 configurable modules, including Member Management, Employer Management, Contract Management, Member and Employer Payments and Billing, Grievances, Organizing, Dispatch, Call Center, Meetings and Events, Surveys and Votes, Integrated Email and Text, Electronic Signatures, and Reports and Queries. We configure every implementation to your union's bylaws, contracts, and structure. eMembership handles classification-based dues across multiple contracts and multi-employer remittance. Grievances follow the steps in your contract, with deadline reminders routed to the assigned rep, and DOL-compliant electronic voting is built in.
Members get a native iOS and Android app and a web portal. Both sync with your staff system in real time, so members can pay dues, update their information, and check their status without calling the hall.
Winmill Software has been in business since 1994. We built the first version of eMembership in 2008, and we still build, run, and support it today. eMembership runs on infrastructure Winmill owns and operates inside a SOC 1 and SOC 2 audited, ISO 27001 certified facility, with HIPAA Security Rule and PCI DSS compliance maintained for the eMembership environment. We take care of the servers, security patches, monitoring, and nightly encrypted offsite backups, so your team can focus on members.
Every engagement starts with a fixed-scope, fixed-price Discovery Project. Your data migrates into a parallel environment your staff validates, and nothing goes live until your team signs off. After launch, two scheduled releases a year are included in your subscription, and our US-based team provides support backed by defined response targets.
Pricing follows the modules you use, with no per-seat or per-member fees, so adding members or staff never raises your software bill.
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OpenSea
The world’s largest digital marketplace for crypto collectibles and non-fungible tokens (NFTs), including ERC721 and ERC1155 assets. Buy, sell, and discover exclusive digital assets like Axies, ENS names, CryptoKitties, Decentraland, and more. Building brand new economies powered by true digital ownership. OpenSea is the first and largest marketplace for user-owned digital goods, which include collectibles, gaming items, domain names, digital art, and other assets backed by a blockchain. At OpenSea, we're excited about a brand new type of digital good often referred to as a non-fungible token, or NFT. NFTs have exciting new properties: they’re unique, provably scarce, liquid, and usable across multiple applications. Just like physical goods, you can do whatever you want with them! You could throw them in the trash, gift them to a friend across the world, or go sell them on an open marketplace. But unlike physical goods, they're armed with all the programmability of digital assets.
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