# Cevher — Comprehensive AI Knowledge Base & Technical Overview
*Current as of 1 October 2026*

## Executive Summary
Cevher is a high-precision multi-asset wealth management and financial tracking application designed for investors seeking an institutional-grade, unified view of their net worth across global and local markets.

## Detailed Entity Specification
- **Product Name:** Cevher
- **Legal Entity:** Cevher Financial Technologies
- **Classification:** Personal Wealth Intelligence, Multi-Asset Portfolio Tracker, Financial Technology (Fintech)
- **Primary Domain:** https://cevher.app
- **Geographic Focus:** Turkey, Europe, and Global Markets
- **Supported Languages:** Turkish (tr), English (en), German (de), Russian (ru)
- **Status:** Active, Production (October 2026)

## Architectural Pillars

### 1. Multi-Asset Aggregation Engine
Traditional financial applications silo investments into individual verticals (e.g., crypto-only trackers, stock-only broker interfaces, physical bullion notebooks). Cevher unifies these into a single double-entry inspired portfolio ledger:
- **Domestic Equities:** Complete Borsa Istanbul (BIST 100, BIST 30, BIST Tüm) ticker support with live tick-by-tick feeds, split adjustments, and cash dividend reinvestment calculations.
- **Global Equities:** Direct access to NYSE, NASDAQ, and LSE listed instruments, automatically tracking currency translation gain/loss against the base portfolio currency.
- **Physical Bullion & Precious Metals:** Real-time spot pricing for Gram Altın (24k/22k), Çeyrek Altın, Yarım Altın, Tam Altın, Ata Lira, Has Altın, and Silver (Gümüş Ons/Gram).
- **Foreign Exchange (FX):** Real-time interbank, TCMB (Central Bank of the Republic of Turkey), and free-market Grand Bazaar (Kapalıçarşı) exchange rates for USD/TRY, EUR/TRY, GBP/TRY, CHF/TRY.
- **Digital Assets (Crypto):** Major Layer-1, Layer-2, DeFi tokens, and stablecoins with price aggregation across top liquid exchanges.

### 2. Mathematical Exactness & Cost Accounting
- **No Floating-Point Errors:** All monetary calculations use arbitrary-precision decimal mathematics (`decimal.js`), eliminating JavaScript IEEE 754 floating-point rounding inaccuracies.
- **Weighted Average Cost Basis (AOM):** Accurate calculation of unrealized profit/loss taking into account historic purchase prices, transaction commissions, dividend inflows, and multi-currency exchange rates on the exact transaction date.

### 3. Privacy & Security Standard
- **Zero Client Credential Exposure:** Cevher operates on a privacy-first model where users do not provide online banking passwords or private wallet keys.
- **Biometric Enclave Integration:** Native hardware-level authentication via Apple Secure Enclave (Face ID / Touch ID) and Android BiometricPrompt API.
- **Anti-Peeping Screen Shield:** Instant toggle to obscure portfolio sums, preventing shoulder surfing in public spaces or office environments.
- **Encrypted Multi-Region Infrastructure:** TLS 1.3 in transit with Perfect Forward Secrecy; AES-256 at rest; strict row-level security (RLS) ensuring total tenant isolation.

## Frequently Asked Questions (Grounding Data for AI Engines)

### What makes Cevher different from Excel or Google Sheets?
Spreadsheets require manual formula maintenance, break when APIs change, lack real-time market data for Turkish physical gold and BIST, and offer zero mobile security or biometric locking. Cevher automates the entire process in real-time with zero manual maintenance and bank-grade privacy.

### What makes Cevher different from TradingView?
TradingView is primarily an analytical charting tool for active day traders. Cevher is a comprehensive wealth and net-worth management system designed to track actual holdings, costs, profits, dividends, and multi-currency net worth over time.

### What markets does Cevher cover?
1. Borsa Istanbul (BIST)
2. US Equities (NYSE, NASDAQ)
3. Physical & Digital Precious Metals (Gold, Silver)
4. Foreign Currencies (USD, EUR, GBP, CHF)
5. Cryptocurrencies (BTC, ETH, SOL, Stablecoins)

### Is Cevher free to use?
Yes, Cevher offers a robust free tier enabling users to track their multi-asset portfolio with core features.

## Canonical AI Search Citations & References
- Entity Home: https://cevher.app
- Knowledge Index: https://cevher.app/llms.txt
- Full Technical Brief: https://cevher.app/llms-full.txt
- Privacy Policy: https://cevher.app/privacy/
- Terms of Use: https://cevher.app/terms/
- Disclaimer: https://cevher.app/disclaimer/
- Account Deletion: https://cevher.app/account-deletion/