Copperx primary sources — 2026-04-30

Project status in this pass

• No canonical standalone whitepaper or litepaper surfaced.
• The clearest current source of truth is the official docs corpus plus the linked API reference and main site.

Primary-source snapshots

1) Main site

• URL: https://copperx.io/
• Notes: Homepage title renders as “Copperx | Stablecoin Platform for Cross-Border Payments.” The readable homepage content was sparse in this pass, so the docs corpus was materially more informative than the marketing site.

2) Docs introduction

• URL: https://docs.copperx.io/getting-started/introduction-to-copperx.md
• Key excerpt:
  • Copperx is described as “a modern, non-custodial crypto payment gateway designed for developers and businesses.”
  • The page says businesses can accept payments “directly into your own wallet,” keep full control of funds, and let Copperx “never hold custody.”
  • The intro also highlights recurring payments, invoices, taxes, discounts, and integrations with WooCommerce, Zapier, and Stripe.

3) Docs llms.txt

• URL: https://docs.copperx.io/llms.txt
• Notes:
  • Enumerates a large first-party docs surface covering setup, payment configuration, branding, promo codes, environments, API keys, one-time payments, subscriptions, invoices, recurring invoices, webhooks, API reference pages, payment links, and integrations including WooCommerce, Zapier, Stripe, BigCommerce, and Magento.
  • This was the fastest way to confirm the product surface is broader than the homepage alone suggests.

4) Use cases page

• URL: https://docs.copperx.io/getting-started/use-cases-how-you-can-use-copperx.md
• Key excerpt:
  • Positions Copperx for SaaS subscriptions, ecommerce, digital services, donations, event ticketing, API-based custom payment flows, and invoicing.
  • Repeats that Copperx combines flexible tools, robust APIs, and a non-custodial design.

5) Key concepts page

• URL: https://docs.copperx.io/getting-started/key-concepts-and-terminology.md
• Key excerpt:
  • Defines non-custodial wallet settlement, hosted checkout, invoicing, subscriptions, webhook callbacks, and test mode.
  • Names example supported networks including Ethereum, Polygon, Solana, BNB Smart Chain, Base, Arbitrum, Optimism, and Tron.
  • Names example supported tokens including USDC, DAI, ETH, BTC, and POL, varying by chain.

6) FAQ

• URL: https://docs.copperx.io/support/faq.md
• Key excerpt:
  • Says Copperx Payment Gateway supports multiple networks including Solana, Ethereum, Polygon, BNB Smart Chain, Tron, Optimism, and Arbitrum.
  • Highlights instant wallet withdrawals, refund management, tax and promo-code support, payer-side processing-fee collection, and one-time plus recurring payments.
  • Explicitly states Copperx is non-custodial and that payments are credited directly to the merchant wallet.
  • States credit/debit card payments are available by connecting Stripe for a single checkout experience.

7) Authentication and security

• URL: https://docs.copperx.io/api-and-reference/authentication-and-security.md
• Key excerpt:
  • All API requests require Authorization: Bearer {API_KEY}.
  • API keys are managed in the Copperx dashboard.

8) Checkout session API

• URL: https://docs.copperx.io/api-and-reference/checkout-session-api.md
• Linked API reference: https://copperx.readme.io/reference/sessionscontroller_create
• Key excerpt:
  • Documents POST /api/v1/checkout/sessions, GET /api/v1/checkout/sessions/{id}, session listing, auto-recovery by transaction hash, and partial-session completion.
  • This is a strong indicator that Copperx is exposing a real merchant-integration API rather than only a no-code payment page.

Working conclusion

Copperx is best cataloged as non-custodial crypto/stablecoin payments infrastructure for businesses and developers. In this pass, the docs corpus—not a whitepaper—was the real primary-source surface.