> For the complete documentation index, see [llms.txt](https://docs.quantropylab.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.quantropylab.com/welcome/readme.md).

# Introduction

**Quantropy** is the systematic injection of non-deterministic entropy into blockchain.

In plain terms: Quantropy is a protocol and infrastructure layer that supplies *verifiable, real-time quantum randomness*—harvested from physical subatomic particle collapse—instead of software-generated pseudo-randomness. It is a **Decentralized Physical Infrastructure Network (DePIN)** that anchors this entropy on-chain (Solana) and exposes it via a low-latency API backed by a multi-vendor quantum processor fleet (IBM, IonQ, Rigetti).

* **Primary tech stack:** Solana (settlement), multi-vendor QPU fleet, REST/gRPC API.
* **Core value:** Moving from digital simulation to physical reality—replacing vulnerable software simulations with absolute sub-atomic physics.

Every entropy request returns high-fidelity random bytes plus a **Quantum Job ID** and **Solana transaction**, so you get both the randomness and the proof. Use it for cryptographic nonces, fair lotteries, AI agent seeds, oracles, and any use case where verifiable, non-deterministic randomness matters. The docs cover the [philosophy](/welcome/philosophy.md), [Quick Start](/welcome/quick-start.md), [API](/developers/api-reference.md), [SDKs](/developers/sdk-libraries.md), and [tokenomics](/tokenomics/qpy-overview.md).

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## Key metrics

| Metric               | Value                         |
| -------------------- | ----------------------------- |
| **Global Latency**   | <1ms (Internal Engine)        |
| **Network Capacity** | 250k+ Concurrent Requests     |
| **Hardware Fleet**   | 5,000+ Available Qubits       |
| **Throughput**       | 1M+ Daily Verifiable Requests |

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[**Integrate Now**](/welcome/quick-start.md) — Get API access and start building on real quantum entropy.

**Next:** [Philosophy](/welcome/philosophy.md) · [Quick Start](/welcome/quick-start.md) · [API Reference](/developers/api-reference.md)