# CrankX
[](https://crates.io/crates/crankx)
CrankX is a Rust crate for proving access to stored data segments using the EquiX Proof-of-Work algorithm. Developed for TAPEDRIVE and optimized for Solana, it enables miners to earn rewards by demonstrating possession of specific data. The design is loosely based on Ore’s `drillx`, with an added data-verification step.
---
## ✨ Features
- EquiX PoW for tape segment data
- Proves raw data possession
- Malleability-resistant digest sorting
- Solana-optimized with Keccak hashing
- Pre-allocated memory for performance
---
## 🚀 Quick Start
Solve challenge,
```rust
use crankx::{solve, CrankXError};
fn main() -> Result<(), CrankXError> {
let challenge = [0u8; 32];
let data = [1u8; 64];
let nonce = [0u8; 8];
let solution = solve(&challenge, &data, &nonce)?;
println!("Digest: {:?}", solution.d);
println!("Difficulty: {}", solution.difficulty());
Ok(())
}
```
Verify solution,
```rust
use crankx::{verify, CrankXError};
fn main() -> Result<(), CrankXError> {
let challenge = [0u8; 32];
let data = [1u8; 64];
let nonce = [0u8; 8];
let digest = [0u8; 16];
verify(&challenge, &data, &nonce, &digest)?;
println!("Valid!");
Ok(())
}
```
Returns `Ok()` or `Err(CrankXError)`.
---
## 🙌 Contributing
Contributions are welcome! Please open issues or PRs on the GitHub repo.