diff --git a/blockchain/chain.go b/blockchain/chain.go
index 58d7256d..960e2807 100644
--- a/blockchain/chain.go
+++ b/blockchain/chain.go
@@ -1344,6 +1344,15 @@ func (b *BlockChain) BestSnapshot() *BestState {
 	return snapshot
 }
 
+// BestHeader returns the hash and the height of the best header.
+func (b *BlockChain) BestHeader() (chainhash.Hash, int32) {
+	b.chainLock.RLock()
+	defer b.chainLock.RUnlock()
+
+	best := b.bestHeader.Tip()
+	return best.hash, best.height
+}
+
 // TipStatus is the status of a chain tip.
 type TipStatus byte
 
@@ -1535,6 +1544,54 @@ func (b *BlockChain) BlockHashByHeight(blockHeight int32) (*chainhash.Hash, erro
 	return &node.hash, nil
 }
 
+// IsValidHeader checks that we've already checked that this header connects to the
+// chain of best headers and did not receive an invalid state.
+func (b *BlockChain) IsValidHeader(blockHash *chainhash.Hash) bool {
+	node := b.index.LookupNode(blockHash)
+	if node == nil || !b.bestHeader.Contains(node) {
+		return false
+	}
+
+	return !b.index.NodeStatus(node).KnownInvalid()
+}
+
+// LatestBlockLocatorByHeader returns a block locator for the latest known tip of the
+// header chain.
+//
+// This function is safe for concurrent access.
+func (b *BlockChain) LatestBlockLocatorByHeader() (BlockLocator, error) {
+	b.chainLock.RLock()
+	locator := b.bestHeader.BlockLocator(nil)
+	b.chainLock.RUnlock()
+	return locator, nil
+}
+
+// HeaderHashByHeight returns the block header's hash given its height.
+//
+// NOTE: If the blockNode at the given blockHeight is not included in the
+// bestHeader chain, the function will return an error indicating that the
+// blockHeight wasn't found.
+func (b *BlockChain) HeaderHashByHeight(blockHeight int32) (
+	*chainhash.Hash, error) {
+
+	node := b.bestHeader.NodeByHeight(blockHeight)
+	if node == nil || !b.bestHeader.Contains(node) {
+		return nil, fmt.Errorf("blockheight %v not found", blockHeight)
+	}
+
+	return &node.hash, nil
+}
+
+// HeaderHeightByHash returns the height of the header given its hash.
+func (b *BlockChain) HeaderHeightByHash(blockHash chainhash.Hash) (int32, error) {
+	node := b.index.LookupNode(&blockHash)
+	if node == nil || !b.bestHeader.Contains(node) {
+		return -1, fmt.Errorf("blockhash %v not found", blockHash)
+	}
+
+	return node.height, nil
+}
+
 // HeightRange returns a range of block hashes for the given start and end
 // heights.  It is inclusive of the start height and exclusive of the end
 // height.  The end height will be limited to the current main chain height.