diff --git a/.npmignore b/.npmignore
index fdc9251..9de4da0 100644
--- a/.npmignore
+++ b/.npmignore
@@ -15,4 +15,5 @@ tsconfig.json
 /artifacts/**/*.scrypt.map
 /artifacts/**/*.json
 .asm/
+tsconfig-scryptTS.json
 
diff --git a/package-lock.json b/package-lock.json
index ecf5a0b..3d2d901 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "scrypt-ts-lib",
-  "version": "0.1.27",
+  "version": "0.1.28",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "scrypt-ts-lib",
-      "version": "0.1.27",
+      "version": "0.1.28",
       "license": "MIT",
       "dependencies": {
         "rabinsig": "^4.2.1",
diff --git a/package.json b/package.json
index 886bd4b..0a359f9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scrypt-ts-lib",
-  "version": "0.1.27",
+  "version": "0.1.28",
   "description": "A collection of smart contract libraries for `scrypt-ts`.",
   "types": "dist/index.d.ts",
   "main": "dist/index.js",
diff --git a/src/blockchain.ts b/src/blockchain.ts
index 420c829..fbbb6be 100644
--- a/src/blockchain.ts
+++ b/src/blockchain.ts
@@ -122,6 +122,14 @@ export class Blockchain extends SmartContractLib {
         return bhHash <= target && target <= blockchainTarget
     }
 
+    @method()
+    static verifyBlockHeader(bh: BlockHeader): boolean {
+        const bhHash = Blockchain.blockHeaderHashAsInt(bh)
+        const target = Blockchain.bits2Target(bh.bits)
+        // Block hash below target
+        return bhHash <= target
+    }
+
     // Is a chain of block headers valid.
     // TODO