Update founder reward script generation and address conversion

- Update the code to generate founder reward script for the Koto cryptocurrency.
- Update the address conversion functions to handle Koto addresses.
- Refactor the code to use the bs58check library for base58 dependency.

Author: Aoi Emerauda

lib/pool.js

@@ -297,7 +297,9 @@ var pool = module.exports = function pool(options, authorizeFn) {
                 percent: percent / 100
             };
             try {
-                if (r.length === 40) {
+                if (options.coin.name === 'koto' || options.coin.name === 'koto_testnet') {
+                    rObj.script = util.kotoAddressToScript(r);
+                } else if (r.length === 40) {
                     rObj.script = util.miningKeyToScript(r);
                 } else {
                     rObj.script = util.addressToScript(options.network, r);
@@ -468,11 +470,15 @@ var pool = module.exports = function pool(options, authorizeFn) {
             options.network = (options.testnet ? options.coin.testnet : options.coin.mainnet);
 
             options.poolAddressScript = (function () {
-                switch (options.coin.reward) {
-                    case 'POS':
-                        return util.pubkeyToScript(rpcResults.validateaddress.pubkey);
-                    case 'POW':
-                        return util.addressToScript(options.network, rpcResults.validateaddress.address);
+                if (options.coin.name === 'koto' || options.coin.name === 'koto_testnet') {
+                    return util.kotoAddressToScript(rpcResults.validateaddress.address);
+                } else {
+                    switch (options.coin.reward) {
+                        case 'POS':
+                            return util.pubkeyToScript(rpcResults.validateaddress.pubkey);
+                        case 'POW':
+                            return util.addressToScript(options.network, rpcResults.validateaddress.address);
+                    }
                 }
             })();
 
@@ -508,7 +514,7 @@ var pool = module.exports = function pool(options, authorizeFn) {
 
         _this.stratumServer.on('started', function () {
             options.initStats.stratumPorts = Object.keys(options.ports);
-            _this.stratumServer.broadcastMiningJobs(_this.jobManager.currentJob.getJobParams(), _this.jobManager.currentJob.getOdoKey());
+            _this.stratumServer.broadcastMiningJobs( _this.jobManager.currentJob.getJobParams(), _this.jobManager.currentJob.getOdoKey());
             finishedCallback();
 
         }).on('broadcastTimeout', function () {

lib/util.js

@@ -201,7 +201,15 @@ exports.miningKeyToScript = function (key) {
 
 exports.addressToScript = function (network, addr) {
     if (typeof network !== 'undefined' && network !== null) {
-        return bitcoin.address.toOutputScript(addr, network);
+        return bitgoUtxoLib.address.toOutputScript(addr, network);
+    } else {
+        return Buffer.concat([Buffer.from([0x76, 0xa9, 0x14]), bitgoUtxoLib.address.fromBase58Check(addr).hash, Buffer.from([0x88, 0xac])]);
+    }
+};
+
+exports.kotoAddressToScript = function (addr) {
+    if (typeof network !== 'undefined' && network !== null) {
+        return bitgoUtxoLib.address.toOutputScript(addr, network);
     } else {
         return Buffer.concat([Buffer.from([0x76, 0xa9, 0x14]), bitgoUtxoLib.address.fromBase58Check(addr).hash, Buffer.from([0x88, 0xac])]);
     }
@@ -333,7 +341,15 @@ exports.getKotoBlockSubsidy = function (nHeight) {
 
 exports.getFounderRewardScript = function (network, addr) {
     if (typeof network !== 'undefined' && network !== null) {
-        return bitcoin.address.toOutputScript(addr, network);
+        return bitgoUtxoLib.address.toOutputScript(addr, network);
+    } else {
+        return Buffer.concat([Buffer.from([0x76, 0xa9, 0x14]), bitgoUtxoLib.address.fromBase58Check(addr).hash, Buffer.from([0x88, 0xac])]);
+    }
+};
+
+exports.getKotoFounderRewardScript = function (addr) {
+    if (typeof network !== 'undefined' && network !== null) {
+        return bitgoUtxoLib.address.toOutputScript(addr, network);
     } else {
         return Buffer.concat([Buffer.from([0x76, 0xa9, 0x14]), bitgoUtxoLib.address.fromBase58Check(addr).hash, Buffer.from([0x88, 0xac])]);
     }