Capstone mini blockchain clone team 3

capstone_projects/mini_blockchain_clone/Cargo.toml

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+[package]
+name = "mini_blockchain_clone"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+sha2 = "0.10"
+hex = "0.4"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+rand = "0.9.2"

capstone_projects/mini_blockchain_clone/README.md

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+# Mini Bitcoin Blockchain CLI Simulator
+
+## Overview
+
+Rust CLI simulator for Bitcoin-like blockchain basics: block creation, PoW mining (simplified: 2 leading zero bytes), validation, JSON persistence, and interactive mining. Educational tool for blockchain concepts.
+
+**Features**:
+- Interactive mining with custom Merkle roots.
+- Step-by-step simulation.
+- Auto-save/load from `blockchain.json`.
+- Chain validation (hashes, links, PoW).
+
+**Limitations**:
+- Fixed low difficulty; no real txns/network.
+- Mining timeout: 1M nonces.
+
+## Prerequisites & Dependencies
+
+- Rust 1.70+.
+- `Cargo.toml`:
+  ```toml
+  [dependencies]
+  sha2 = "0.10"
+  serde = { version = "1.0", features = ["derive"] }
+  serde_json = "1.0"
+  hex = "0.4"
+  ```
+
+## CLI Functions
+
+- `mine_new_block(&mut bc)`: Prompt Merkle; mine/add/save.
+- `view_blockchain(&bc)`: Print chain details.
+- `validate_blockchain(&bc)`: Run `is_valid`.
+- `run_simulation()`: Tutorial with fixed params; demo mine.
+
+## Main Loop
+
+- Init `Blockchain` (easy target); load JSON.
+- Menu: 1=Sim, 2=View, 3=Validate, 4=Load, 5=Mine, 6=Exit.
+- Pauses post-action; orange styling.
+
+## Build/Run
+
+`cargo build && cargo run`
+
+**Example Mining Output**:
+```
+🔨 Mining block...
+Target: 000000000000ffffff...
+Nonce: 12345 | Hash: 0000abcd...
+✅ Block mined! Nonce: 12345
+✨ Added; 💾 Saved.
+```