About Interbox

Interbox lets a bank's customers buy a US dollar stablecoin with Zelle^®. The customer pays from their own bank account and receives the coin in a crypto wallet they control. The bank runs the service: it receives the payment, sells the coin, delivers it and keeps the records.

This site is a demonstration. It is not a service and sells nothing. Only Base Sepolia, a test network, pays out, in test USDC with no value.

The company

Inter Dot Box LLC, of Woodinville, Washington, develops Interbox. It licenses the Interbox software and US Patent 12,737,752 to the bank that operates the service. The bank handles the money; Inter Dot Box LLC does not receive, hold or transmit it.

The founder

Paul Reinholdtsen founded Inter Dot Box LLC and is the inventor named on US Patent 12,737,752.

The patent

US Patent 12,737,752 B2, Cryptographically Linking a Cryptocurrency Wallet to a Payment Confirmation from a Digital Payment Platform Account, granted September 15, 2026.

Contact

main@inter.box. See also Contact.