diff --git a/src/models/MiningJob.ts b/src/models/MiningJob.ts
index 1f35851..130e916 100644
--- a/src/models/MiningJob.ts
+++ b/src/models/MiningJob.ts
@@ -50,8 +50,9 @@ export class MiningJob {
 
         //    39th byte onwards: Optional data with no consensus meaning
         coinbaseTransaction.ins[0].script = Buffer.concat([Buffer.from([littleEndianBlockHeight.byteLength]), littleEndianBlockHeight, Buffer.alloc(8, 0)]);
-        const extra = Buffer.from('\\public-pool\\');
-        coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, this.block.witnessCommit, extra])]), 0);
+        //const extra = Buffer.from('\\public-pool\\');
+        //coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, this.block.witnessCommit, extra])]), 0);
+        coinbaseTransaction.addOutput(bitcoinjs.script.compile([bitcoinjs.opcodes.OP_RETURN, Buffer.concat([segwitMagicBits, this.block.witnessCommit])]), 0);
 
         // get the non-witness coinbase tx
         //@ts-ignore
diff --git a/src/models/StratumV1Client.ts b/src/models/StratumV1Client.ts
index 6b66181..b2ccf2e 100644
--- a/src/models/StratumV1Client.ts
+++ b/src/models/StratumV1Client.ts
@@ -353,9 +353,9 @@ export class StratumV1Client extends EasyUnsubscribe {
         console.log(`DIFF: ${submissionDifficulty} of ${this.sessionDifficulty} from ${this.clientAuthorization.worker + '.' + this.extraNonce}`);
         console.log(`Header: ${header.toString('hex')}`);
 
-        if (submissionDifficulty.gte(this.sessionDifficulty)) {
+        if (submissionDifficulty >= this.sessionDifficulty) {
 
-            if (submissionDifficulty.gte(job.networkDifficulty)) {
+            if (submissionDifficulty >= job.networkDifficulty) {
                 console.log('!!! BLOCK FOUND !!!');
                 const blockHex = updatedJobBlock.toHex(false);
                 const result = await this.bitcoinRpcService.SUBMIT_BLOCK(blockHex);
@@ -373,9 +373,9 @@ export class StratumV1Client extends EasyUnsubscribe {
                 return false;
             }
 
-            if (submissionDifficulty.gt(this.entity.bestDifficulty)) {
-                await this.clientService.updateBestDifficulty(this.extraNonce, submissionDifficulty.toNumber());
-                this.entity.bestDifficulty = submissionDifficulty.toNumber();
+            if (submissionDifficulty > this.entity.bestDifficulty) {
+                await this.clientService.updateBestDifficulty(this.extraNonce, submissionDifficulty);
+                this.entity.bestDifficulty = submissionDifficulty;
             }
 
         } else {
@@ -418,7 +418,7 @@ export class StratumV1Client extends EasyUnsubscribe {
         }
     }
 
-    public calculateDifficulty(header: Buffer): { submissionDifficulty: Big, submissionHash: string } {
+    public calculateDifficulty(header: Buffer): { submissionDifficulty: number, submissionHash: string } {
 
         const hashResult = bitcoinjs.crypto.hash256(header);
 
@@ -426,7 +426,7 @@ export class StratumV1Client extends EasyUnsubscribe {
 
         const truediffone = Big('26959535291011309493156476344723991336010898738574164086137773096960');
         const difficulty = truediffone.div(s64.toString());
-        return { submissionDifficulty: difficulty, submissionHash: hashResult.toString('hex') };
+        return { submissionDifficulty: difficulty.toNumber(), submissionHash: hashResult.toString('hex') };
     }