About

OptOut.cash

App

Private by default

Stablecoin in. Bitcoin out.

OptOut.cash coordinates one purchase flow: spend supported USDC or USDT and receive native BTC at a Bitcoin address. Users see the amount, network cost, quote expiry, destination, and delivery state before payment.

Supported input

Selected rails only

  • Input: USDC on Base, Ethereum, and BNB Chain; USDT on BNB Chain and Tron
  • Output: native Bitcoin L1
  • Only the live stablecoin-to-Bitcoin purchase paths are supported.

Costs

Quoted live

  • Network cost is included in the live BTC quote.
  • The quote expires; refresh for the latest estimate before signing.
  • OptOut.cash does not add an app fee.

Agent docs

Machine-readable surfaces

LLMSFull contextOpenAPIManifestCapabilities