diff --git a/index.d.ts b/index.d.ts
index 75ec3f4..4c75849 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -403,6 +403,18 @@ export declare function syntheticKeyToPuzzleHash(syntheticKey: Buffer): Buffer
  * @returns {BigInt} The cost of the coin spends.
  */
 export declare function getCost(coinSpends: Array<CoinSpend>): bigint
+/**
+ * Returns the mainnet genesis challenge.
+ *
+ * @returns {Buffer} The mainnet genesis challenge.
+ */
+export declare function getMainnetGenesisChallenge(): Buffer
+/**
+ * Returns the testnet11 genesis challenge.
+ *
+ * @returns {Buffer} The testnet11 genesis challenge.
+ */
+export declare function getTestnet11GenesisChallenge(): Buffer
 export declare class Peer {
   /**
    * Creates a new Peer instance.
diff --git a/index.js b/index.js
index 9f71def..2388884 100644
--- a/index.js
+++ b/index.js
@@ -310,7 +310,7 @@ if (!nativeBinding) {
   throw new Error(`Failed to load native binding`)
 }
 
-const { newLineageProof, newEveProof, Peer, selectCoins, sendXch, morphLauncherId, createServerCoin, mintStore, oracleSpend, addFee, masterPublicKeyToWalletSyntheticKey, masterPublicKeyToFirstPuzzleHash, masterSecretKeyToWalletSyntheticSecretKey, secretKeyToPublicKey, puzzleHashToAddress, addressToPuzzleHash, adminDelegatedPuzzleFromKey, writerDelegatedPuzzleFromKey, oracleDelegatedPuzzle, signCoinSpends, getCoinId, updateStoreMetadata, updateStoreOwnership, meltStore, signMessage, verifySignedMessage, syntheticKeyToPuzzleHash, getCost } = nativeBinding
+const { newLineageProof, newEveProof, Peer, selectCoins, sendXch, morphLauncherId, createServerCoin, mintStore, oracleSpend, addFee, masterPublicKeyToWalletSyntheticKey, masterPublicKeyToFirstPuzzleHash, masterSecretKeyToWalletSyntheticSecretKey, secretKeyToPublicKey, puzzleHashToAddress, addressToPuzzleHash, adminDelegatedPuzzleFromKey, writerDelegatedPuzzleFromKey, oracleDelegatedPuzzle, signCoinSpends, getCoinId, updateStoreMetadata, updateStoreOwnership, meltStore, signMessage, verifySignedMessage, syntheticKeyToPuzzleHash, getCost, getMainnetGenesisChallenge, getTestnet11GenesisChallenge } = nativeBinding
 
 module.exports.newLineageProof = newLineageProof
 module.exports.newEveProof = newEveProof
@@ -340,3 +340,5 @@ module.exports.signMessage = signMessage
 module.exports.verifySignedMessage = verifySignedMessage
 module.exports.syntheticKeyToPuzzleHash = syntheticKeyToPuzzleHash
 module.exports.getCost = getCost
+module.exports.getMainnetGenesisChallenge = getMainnetGenesisChallenge
+module.exports.getTestnet11GenesisChallenge = getTestnet11GenesisChallenge
diff --git a/src/lib.rs b/src/lib.rs
index 883772d..5d5b057 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1313,3 +1313,19 @@ pub fn get_cost(coin_spends: Vec<CoinSpend>) -> napi::Result<BigInt> {
     .map_err(js::err)?
     .to_js()
 }
+
+#[napi]
+/// Returns the mainnet genesis challenge.
+///
+/// @returns {Buffer} The mainnet genesis challenge.
+pub fn get_mainnet_genesis_challenge() -> napi::Result<Buffer> {
+    MAINNET_CONSTANTS.genesis_challenge.to_js()
+}
+
+#[napi]
+/// Returns the testnet11 genesis challenge.
+///
+/// @returns {Buffer} The testnet11 genesis challenge.
+pub fn get_testnet11_genesis_challenge() -> napi::Result<Buffer> {
+    TESTNET11_CONSTANTS.genesis_challenge.to_js()
+}