diff --git a/kate/benches/reconstruct.rs b/kate/benches/reconstruct.rs
index 62464b2..214a00a 100644
--- a/kate/benches/reconstruct.rs
+++ b/kate/benches/reconstruct.rs
@@ -70,7 +70,7 @@ fn sample_cells_from_matrix(matrix: &DMatrix<ArkScalar>, columns: Option<&[u16]>
 					let position = Position::new(row_pos, col_idx);
 					debug_assert!(*row_idx < col_view.len());
 					let data = col_view[*row_idx].to_bytes();
-					DataCell::new(position, data.unwrap())
+					DataCell::new(position, data.unwrap().to_vec())
 				})
 				.collect::<Vec<_>>()
 		})
diff --git a/kate/recovery/src/com.rs b/kate/recovery/src/com.rs
index 5f8135a..f9eb1e7 100644
--- a/kate/recovery/src/com.rs
+++ b/kate/recovery/src/com.rs
@@ -217,10 +217,16 @@ pub fn reconstruct_extrinsics(
 #[cfg(feature = "std")]
 pub fn reconstruct_columns(
 	dimensions: matrix::Dimensions,
-	cells: &[data::SingleCell],
+	cells: &[data::Cell],
 ) -> Result<HashMap<u16, Vec<[u8; CHUNK_SIZE]>>, ReconstructionError> {
 	// Convert cells into DataCells
-	let data_cells: Vec<data::DataCell> = cells.iter().cloned().map(Into::into).collect();
+	let data_cells: Vec<data::DataCell> = cells
+		.iter()
+		.map(|cell| match cell {
+			data::Cell::SingleCell(sc) => data::DataCell::from(sc.clone()),
+			data::Cell::MultiProofCell(mc) => data::DataCell::from(mc.clone()),
+		})
+		.collect();
 
 	// Map cells by column
 	let columns = map_cells(dimensions, data_cells)?;
@@ -329,7 +335,7 @@ pub fn decode_app_extrinsics(
 			.filter(|cell| !cell.data.is_empty())
 		{
 			None => app_data.extend(vec![0; CHUNK_SIZE]),
-			Some(cell) => app_data.extend(cell.data),
+			Some(cell) => app_data.extend(cell.data.clone()),
 		}
 	}
 
@@ -897,19 +903,19 @@ mod tests {
 		let cells = vec![
 			DataCell {
 				position: Position { row: 0, col: 0 },
-				data: coded[0].to_bytes().unwrap(),
+				data: coded[0].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 4, col: 0 },
-				data: coded[4].to_bytes().unwrap(),
+				data: coded[4].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 6, col: 0 },
-				data: coded[6].to_bytes().unwrap(),
+				data: coded[6].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 2, col: 0 },
-				data: coded[2].to_bytes().unwrap(),
+				data: coded[2].to_bytes().unwrap().to_vec(),
 			},
 		];
 
@@ -935,19 +941,19 @@ mod tests {
 		let cells = vec![
 			DataCell {
 				position: Position { row: 0, col: 0 },
-				data: coded[0].to_bytes().unwrap(),
+				data: coded[0].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 0, col: 0 },
-				data: coded[0].to_bytes().unwrap(),
+				data: coded[0].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 6, col: 0 },
-				data: coded[6].to_bytes().unwrap(),
+				data: coded[6].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 2, col: 0 },
-				data: coded[2].to_bytes().unwrap(),
+				data: coded[2].to_bytes().unwrap().to_vec(),
 			},
 		];
 
@@ -968,15 +974,15 @@ mod tests {
 		let cells = vec![
 			DataCell {
 				position: Position { row: 4, col: 0 },
-				data: coded[4].to_bytes().unwrap(),
+				data: coded[4].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 6, col: 0 },
-				data: coded[6].to_bytes().unwrap(),
+				data: coded[6].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 2, col: 0 },
-				data: coded[2].to_bytes().unwrap(),
+				data: coded[2].to_bytes().unwrap().to_vec(),
 			},
 		];
 
@@ -997,19 +1003,19 @@ mod tests {
 		let cells = vec![
 			DataCell {
 				position: Position { row: 0, col: 0 },
-				data: coded[0].to_bytes().unwrap(),
+				data: coded[0].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 5, col: 0 },
-				data: coded[4].to_bytes().unwrap(),
+				data: coded[4].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 6, col: 0 },
-				data: coded[6].to_bytes().unwrap(),
+				data: coded[6].to_bytes().unwrap().to_vec(),
 			},
 			DataCell {
 				position: Position { row: 2, col: 0 },
-				data: coded[2].to_bytes().unwrap(),
+				data: coded[2].to_bytes().unwrap().to_vec(),
 			},
 		];
 
diff --git a/kate/recovery/src/data.rs b/kate/recovery/src/data.rs
index c074c03..4ceb1a2 100644
--- a/kate/recovery/src/data.rs
+++ b/kate/recovery/src/data.rs
@@ -15,10 +15,10 @@ use alloc::string::String;
 /// Position and data of a cell in extended matrix
 #[derive(Default, Debug, Clone, Constructor)]
 pub struct DataCell {
-	/// SingleCell's position
+	/// Cell's position
 	pub position: Position,
-	/// SingleCell's data
-	pub data: [u8; 32],
+	/// Cell's data
+	pub data: Vec<u8>,
 }
 
 /// Position and content of a cell in extended matrix
@@ -281,25 +281,40 @@ impl TryFrom<Cell> for SingleCell {
 
 /// Merges cells data per row.
 /// Cells are sorted before merge.
-pub fn rows(dimensions: Dimensions, cells: &[&SingleCell]) -> Vec<(RowIndex, Vec<u8>)> {
+pub fn rows(dimensions: Dimensions, cells: &[&Cell]) -> Vec<(RowIndex, Vec<u8>)> {
 	let mut sorted_cells = cells.to_vec();
 
-	sorted_cells
-		.sort_by(|a, b| (a.position.row, a.position.col).cmp(&(b.position.row, b.position.col)));
+	sorted_cells.sort_by(|a, b| {
+		(a.position().row, a.position().col).cmp(&(b.position().row, b.position().col))
+	});
 
 	let mut rows = BTreeMap::new();
 	for cell in sorted_cells {
-		rows.entry(RowIndex(cell.position.row))
-			.or_insert_with(Vec::default)
+		let row_index = RowIndex(cell.position().row);
+		rows.entry(row_index)
+			.or_insert_with(Vec::new)
 			.extend(cell.data());
 	}
 
 	rows.retain(|_, row| row.len() == dimensions.row_byte_size());
-	rows.into_iter().collect::<Vec<(_, _)>>()
+	rows.into_iter().collect()
 }
 
+/// Converts a `SingleCell` into a `DataCell`.`position` here refers
+/// to the index of a cell in the main grid.
 impl From<SingleCell> for DataCell {
 	fn from(cell: SingleCell) -> Self {
+		DataCell {
+			position: cell.position,
+			data: cell.data().to_vec(),
+		}
+	}
+}
+
+/// Converts a `MultiProofCell` into a `DataCell`.`position` here refers
+/// to the index of a multiproof cell on the target multiproof grid.
+impl From<MultiProofCell> for DataCell {
+	fn from(cell: MultiProofCell) -> Self {
 		DataCell {
 			position: cell.position,
 			data: cell.data(),
@@ -307,6 +322,15 @@ impl From<SingleCell> for DataCell {
 	}
 }
 
+impl From<Cell> for DataCell {
+	fn from(cell: Cell) -> Self {
+		match cell {
+			Cell::SingleCell(sc) => DataCell::from(sc),
+			Cell::MultiProofCell(mc) => DataCell::from(mc),
+		}
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use std::convert::TryInto;
@@ -336,13 +360,13 @@ mod tests {
 		let dimensions = Dimensions::new(1, 2).unwrap();
 
 		let cell_variants = vec![
-			cell(position(1, 1), content([3; 32])).into(),
-			cell(position(1, 0), content([2; 32])).into(),
-			cell(position(0, 0), content([0; 32])).into(),
-			cell(position(0, 1), content([1; 32])).into(),
+			Cell::from(cell(position(1, 1), content([3; 32]))),
+			Cell::from(cell(position(1, 0), content([2; 32]))),
+			Cell::from(cell(position(0, 0), content([0; 32]))),
+			Cell::from(cell(position(0, 1), content([1; 32]))),
 		];
 
-		let cells: Vec<&SingleCell> = cell_variants.iter().collect();
+		let cells: Vec<&Cell> = cell_variants.iter().collect();
 		let mut rows = rows(dimensions, &cells);
 		rows.sort_by_key(|(key, _)| key.0);
 
@@ -363,12 +387,12 @@ mod tests {
 		let dimensions = Dimensions::new(1, 2).unwrap();
 
 		let cell_variants = vec![
-			cell(position(1, 1), content([3; 32])).into(),
-			cell(position(0, 0), content([0; 32])).into(),
-			cell(position(0, 1), content([1; 32])).into(),
+			Cell::from(cell(position(1, 1), content([3; 32]))),
+			Cell::from(cell(position(0, 0), content([0; 32]))),
+			Cell::from(cell(position(0, 1), content([1; 32]))),
 		];
 
-		let cells: Vec<&SingleCell> = cell_variants.iter().collect();
+		let cells: Vec<&Cell> = cell_variants.iter().collect();
 		let mut rows = rows(dimensions, &cells);
 		rows.sort_by_key(|(key, _)| key.0);
 
diff --git a/kate/src/com.rs b/kate/src/com.rs
index 2aed9ea..0f0b80f 100644
--- a/kate/src/com.rs
+++ b/kate/src/com.rs
@@ -858,7 +858,7 @@ mod tests {
 						let position = Position::new(row_pos, col_idx);
 						debug_assert!(*row_idx < col_view.len());
 						let data = col_view[*row_idx].to_bytes();
-						DataCell::new(position, data.unwrap())
+						DataCell::new(position, data.unwrap().to_vec())
 					})
 					.collect::<Vec<_>>()
 			})
@@ -1083,7 +1083,7 @@ get erasure coded to ensure redundancy."#;
 					let col: usize = position.col.into();
 					let row = usize::try_from(position.row).unwrap();
 					let data = matrix.get((row, col)).map(ArkScalar::to_bytes).unwrap();
-					DataCell::new(position, data.unwrap())
+					DataCell::new(position, data.unwrap().to_vec())
 				})
 				.collect::<Vec<_>>();
 			let data = &decode_app_extrinsics(&index, dimensions, cells, xt.app_id).unwrap()[0];
diff --git a/kate/src/gridgen/tests/formatting.rs b/kate/src/gridgen/tests/formatting.rs
index 4d15a77..acabfc3 100644
--- a/kate/src/gridgen/tests/formatting.rs
+++ b/kate/src/gridgen/tests/formatting.rs
@@ -129,7 +129,8 @@ get erasure coded to ensure redundancy."#;
 					.get((pos.row as usize, pos.col as usize))
 					.unwrap()
 					.to_bytes()
-					.unwrap(),
+					.unwrap()
+					.to_vec(),
 			})
 			.collect::<Vec<_>>();
 		let data = &decode_app_extrinsics(&grid.lookup, bdims, cells, xt.app_id).unwrap()[0];
diff --git a/kate/src/gridgen/tests/mod.rs b/kate/src/gridgen/tests/mod.rs
index 30aa760..f555be6 100644
--- a/kate/src/gridgen/tests/mod.rs
+++ b/kate/src/gridgen/tests/mod.rs
@@ -60,7 +60,8 @@ fn sample_cells(grid: &EvaluationGrid, columns: Option<Vec<usize>>) -> Vec<DataC
 						.evals
 						.get((y, *x))
 						.and_then(|s: &ArkScalar| s.to_bytes().ok())
-						.unwrap();
+						.unwrap()
+						.to_vec();
 					// SAFETY: `y` and `x` can be casted safetly becasue `x < g_cols (u16)` and `y
 					// < g_rows(u16)`
 					let position = Position::from((y as u32, *x as u16));