> For the complete documentation index, see [llms.txt](https://docs.grxchain.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.grxchain.io/8.3-data-usage.md).

# 8.3 Data Usage

### 1) General Principles of Data Usage

We use personal data **transparently and minimally**, only for purposes described in this Policy: to provide and maintain our services, ensure security and legal compliance, and improve our platforms.

### 2) Data Usage for GRX Chain Services (Off-Chain) — **GRXCHAIN Inc. (BVI)**

When you interact with GRXCHAIN-operated services (e.g., GRX Chain websites, developer portals, RPC endpoints, block explorers, status pages, support channels):

* **To Provide Services:** Create/manage optional service accounts (e.g., explorer/developer accounts), deliver features, and respond to support requests.
* **Security & Abuse Prevention:** Detect/prevent fraud, spam, DDoS, or unauthorised access; ensure network and site reliability.
* **Legal & Compliance:** Comply with applicable laws and lawful requests.
* **Product Improvement:** Analyse aggregated or de-identified usage to improve performance, stability, and UX.
* **Communications:** Send essential operational notices; marketing only with your consent (where applicable).

> We **do not** collect or store your private keys or seed phrases and **cannot** access funds in your non-custodial wallets.

### 3) Data Usage on the GRX Chain (On-Chain)

* **On-Chain Data is Public:** Transactions (including wallet addresses, timestamps, and amounts) are permanently recorded on GRX Chain and may be viewable via community explorers (e.g., “GRXscan.io”). This is inherent to public blockchains and **cannot be altered or deleted by us**.
* **Separation from Off-Chain:** Any personal data you provide to GRXCHAIN Inc. for its web services/support is stored **off-chain** and is **not** published to the blockchain.

### 4) Data Sharing

We **do not sell** personal data. We may share limited data with:

* **Service Providers** (e.g., hosting, security/DDoS, analytics, customer support tools) under contracts and confidentiality obligations;
* **Regulators/Law Enforcement,** when legally required;
* **Public Blockchain Participants:** On-chain data is inherently public.

### 5) Data Retention

We retain off-chain personal data only as long as necessary for the purposes above, including security, troubleshooting, and legal/compliance requirements. **On-chain data** is recorded by the network and persists indefinitely by design.

### 6) Your Control

Subject to applicable law, you may request access, correction, or deletion of **off-chain** personal data we hold, and manage communications preferences. For **on-chain** records, deletion is not technically possible; where feasible, we may consider **off-chain** mitigations (e.g., limiting further processing).