# Fiura Pay — LLM / AI reference map # Human docs: https://fiurapay.com/developers (Persian) # This file is intentionally plain text for crawlers and assistants. > Fiura Pay is a multichain crypto payment gateway for merchants (BSC, Ethereum, TRON). > Polkadot checkout is NOT live yet (coming soon). ZK Prove is a separate lab at zk35. ## Product landing (Persian UI) - https://fiurapay.com/ - https://fiurapay.com/#demo — Checkout preview - https://fiurapay.com/#api — API overview section - https://fiurapay.com/#zk35 — ZK35 lab teaser (English shadow section) ## Developer documentation (public, no login) - https://fiurapay.com/developers — API introduction - https://fiurapay.com/developers/quickstart — 4-step merchant setup - https://fiurapay.com/developers/invoices — Create invoice (USDT or Toman) - https://fiurapay.com/developers/payment-status — Detect successful payment (webhook + polling) - https://fiurapay.com/developers/webhooks — HMAC-SHA256 webhook verification - https://fiurapay.com/developers/api-reference — REST endpoints ## Interactive API - https://fiurapay.com/docs — Swagger (OpenAPI) ## ZK / Prove lab (English, NOT production payments) - https://zk35.fiurapay.com — Fiura Prove technical teaser (zero-knowledge financial eligibility) ## Core payment flow 1. Merchant POST /v1/invoices with X-Api-Key (orderAmountUsdt OR orderAmountToman) 2. Response includes checkoutUrl and depositAddress 3. Customer pays on-chain via hosted /pay/:id or wallet 4. Merchant receives invoice.paid webhook OR polls GET /v1/invoices/:id for paymentReport ## Active payment chains - bsc (USDT, BNB) - ethereum (USDT, ETH) - tron (USDT, TRX) - polkadot — coming soon (disabled for invoices) ## Auth Header: X-Api-Key: ath_test_* or ath_live_* ## Terms - https://fiurapay.com/terms