In a world surrounded by centralized payment systems, WARMKEY emerges as a game-changer. Lightweight, secure, and non-custodial, it lets you run a payment gateway in a truly decentralized way—right from your mobile device.

Why WARMKEY Stands Out

1. Non-Custodial & Self-Custodial by Design

Unlike traditional payment gateways that temporarily hold funds, WARMKEY ensures that users retain full ownership of their assets—eliminating counterparty risk and fostering financial autonomy. This aligns with broader Web3 trends emphasizing security and empowerment

2. Multi-Chain Support & Future Expansion

WARMKEY isn’t limited to just one blockchain—it already supports multiple EVM chains and has plans to expand to non-EVM networks. This flexibility future-proofs your payment infrastructure and keeps your projects scalable.

3. Discretionary Signing, Not Blind Signing

Unlike many cold wallets, WARMKEY enforces a unique signing layer where users actively approve each transaction. This discretionary sign system mitigates blind-signature vulnerabilities and brings an extra layer of user-controlled security.

4. Safe & Secure Decentralized Automation

While blockchain systems are inherently deterministic, WARMKEY enables safe automation that sits above the blockchain—perfect for AI workflows or automated settlements shielded by a secure signing boundary.

How WARMKEY Works: Simplified Flow

• User Initiates a Request: From the web portal, the merchant starts a payment request.
• Unsigned Transaction Sent to App: The web interface sends an unsigned TX to the WARMKEY app.
• Authenticated & Secure: The app only responds to signed and validated requests.
• Rule-Based Signing: Built-in rules dictate what can be signed—no blind approvals.
• User Confirms via Discretion Sign: Users selectively approve the transaction, maintaining control.
• Smart Contract Safeguard: The DApp’s smart contracts verify TX details before final execution.

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Aligning with Industry Momentum

• The crypto payment gateway market is evolving fast. Forecasts show a market size of around USD 1.68 billion in 2025, projected to hit USD 6 billion by 2035—a 13.6% CAGR (Future Market Insights).
• Consumers increasingly expect lower fees, seamless UX, support for stablecoins, and interoperability across blockchains (hashcodex.com, UniBee, oscprofessionals).
• Non-custodial models, like NOWPayments or Paymento, are seeing traction by offering more privacy, lower fees, and self-custody—but WARMKEY goes further by adding on-device discretionary signing and decentralized automation (Bitcoin Taxes, paymento.io).
• Meanwhile, traditional finance players are entering crypto payments (e.g., PayPal, Mastercard), yet WARMKEY remains fully decentralized, breaking rooted transactional paradigms (the-sun.com, Business Insider).

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Why WARMKEY is the Smarter Choice

Key Attribute	Why It Matters
Self-Custody	You control your funds—no intermediaries or risks.
Discretionary Signing	Enhanced security—no blind transactions.
Portable Cold Wallet	On-the-go security in your pocket.
AI-Ready Automation	Safe, automated workflows powered by blockchain.
Multi-Chain Friendly	Adaptable and future-proofed infrastructure.
Privacy + Efficiency	Lower cost, faster settlement, robust user control.

Ready to Try It?

Get started in minutes:

• Prepare a spare Android phone.
• Install the WARMKEY app.
• Connect your phone to the web portal via USB.
• Follow the prompts and experience secure, self-custodial payments firsthand.