RADR is a privacy-focused protocol operating on the Solana network, designed to facilitate secure, unlinkable SOL transactions through advanced zero-knowledge cryptography. It features a non-custodial mixer that disrupts on-chain transaction tracing by separating deposit and withdrawal addresses, enhancing user anonymity. The protocol is built around three essential components: an Anchor smart contract responsible for managing deposits and verifying cryptographic proofs, a Groth16 zk-SNARK circuit that generates privacy-enhancing withdrawal proofs, and a multi-layer relay network that conceals transaction metadata. Users can deposit SOL alongside a cryptographic commitment into a Merkle tree, with withdrawals requiring a zero-knowledge proof that allows funds to be claimed at any address without revealing the original deposit details. To ensure transaction privacy, the relay network consists of 13 independent nodes structured into entry, middle, and exit layers. Deposits are routed through 6-9 hops with randomized routing and timing, creating a vast number of possible pathways to obscure the connection between deposits and withdrawals. Each hop uses a distinct wallet address, effectively preventing blockchain analysis from linking these transactions. Additionally, the protocol includes a multi-split feature that divides larger deposits into smaller, randomized amounts. This strategy further mitigates risks associated with amount-based correlation attacks, enhancing the overall security of user transactions. RADR is primarily intended for research and educational purposes, showcasing privacy-preserving methodologies on the Solana network. It has not yet undergone formal security auditing, and users are advised to approach the system with caution, particularly when considering the use of significant funds.