| Venture | A tenant (startup) that integrates with Fintech Core, authenticated by an API key. |
| API key | The secret a venture sends on every request (sk_live_…). Stored only as a hash. |
| Payment | A Satim/CIB order created for a venture, with a hosted payment_url. |
| Satim / CIB | The Algerian card payment gateway Fintech Core integrates with. |
| Order number | Short unique id sent to Satim for a payment (≤ 10 chars). |
| Webhook endpoint | A venture URL that receives signed payment events; each has its own secret. |
| Signature | X-Signature: sha256=<hmac> header proving a webhook came from Fintech Core. |
| Client | A person or company a venture serves (subject to KYC). |
| Account | A balance-bearing account opened for a client. |
| Beneficiary | A saved payment recipient for transfers. |
| DZD | Algerian Dinar; ISO 4217 numeric code 012. |