Contact person: Next.js Ethereum Payment Integration

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Location: Voznesensk, Ukraine

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"My website is built with [login to view URL] and I now want visitors to pay in Ethereum directly on the site. The job is limited to the web front-end and its serverless/API layer—there is no mobile or third-party e-commerce system involved.

The integration can rely on a well-documented gateway such as Coinbase Commerce, BitPay, Alchemy Pay, or a similarly reputable provider as long as it supports Ethereum and offers robust webhooks or REST/web-socket callbacks. Feel free to suggest the library, SDK, or custom smart-contract approach you prefer; I value clean TypeScript, clear commit history, and secure handling of private keys or API secrets through environment variables.

Deliverables
• Fully working ETH checkout flow embedded in the existing [login to view URL] pages (testnet first, then mainnet)
• Serverless/API route that verifies payment status and updates order records in MongoDB (already set up)
• One successful test transaction on mainnet recorded on-chain and reflected in the site’s UI
• README or inline comments explaining environment variables, deployment steps, and how to swap gateways later if needed

I will provide repository access, current .env template, and sample order JSON. Deploy to Vercel preview branches for review; once everything passes, we merge to production." (client-provided description)