diff --git a/src/instruction.rs b/src/instruction.rs
index ed105c7..da5d501 100644
--- a/src/instruction.rs
+++ b/src/instruction.rs
@@ -1,4 +1,5 @@
 use bytemuck::{Pod, Zeroable};
+use drillx::Solution;
 use num_enum::TryFromPrimitive;
 use shank::ShankInstruction;
 use solana_program::{
@@ -274,7 +275,7 @@ pub fn deregister(signer: Pubkey) -> Instruction {
 }
 
 /// Builds a mine instruction.
-pub fn mine(signer: Pubkey, bus: Pubkey, digest: [u8; 16], nonce: u64) -> Instruction {
+pub fn mine(signer: Pubkey, bus: Pubkey, solution: Solution) -> Instruction {
     let proof = Pubkey::find_program_address(&[PROOF, signer.as_ref()], &crate::id()).0;
     Instruction {
         program_id: crate::id(),
@@ -289,8 +290,8 @@ pub fn mine(signer: Pubkey, bus: Pubkey, digest: [u8; 16], nonce: u64) -> Instru
         data: [
             OreInstruction::Mine.to_vec(),
             MineArgs {
-                digest,
-                nonce: nonce.to_le_bytes(),
+                digest: solution.d,
+                nonce: solution.n,
             }
             .to_bytes()
             .to_vec(),