Create a POS charge (crypto QR with amount)
Creates an amount-bearing crypto QR charge for a merchant. Same contract as the universal checkout link: amount + settlement_asset (account default when omitted); the due the customer pays is quoted in the QR’s crypto at creation (the payer covers any conversion — you receive your exact target). The response carries the exclusive deposit address, the raw-address QR (qr_payload + qr_png_base64) and the frozen due, ready for the POS. idempotency_key is required: a retry returns the SAME charge and address.
Authorizations
Session JWT (from register/login) or API key (pk_...).
X-API-Key: <token> is accepted as an alternative header.
Body
tron:usdt, eth:usdt, eth:usdc, btc:btc USDT, USDC, BTC, GOLD 300 <= x <= 86400Response
Created
pending, paid, expired