diff --git a/package.json b/package.json
index 8f9f966..126f66d 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "test:integration:nft": "export RESTURL=https://bchn.fullstack.cash/v6/ && export IS_USING_FREE_TIER=true && mocha --timeout 30000 -g '#nft1' test/integration/slp.js",
     "test:integration:bchn": "export RESTURL=https://bchn.fullstack.cash/v6/ && export IS_USING_FREE_TIER=true && mocha --timeout 30000 test/integration/",
     "test:integration:local:noauth": "export RESTURL=http://localhost:5942/v6/ && mocha --timeout 30000 test/integration/",
+    "test:integration:local:auth": "export RESTURL=http://localhost:5942/v6/ && export BCHJSBEARERTOKEN=some-random-token && mocha --timeout 30000 test/integration/",
     "test:integration:decatur": "export RESTURL=http://192.168.2.127:5942/v6/ && mocha --timeout 30000 test/integration/",
     "coverage": "nyc --reporter=html mocha --timeout 25000 test/unit/",
     "docs": "./node_modules/.bin/apidoc -i src/ -o docs && ./fix-docs-contrast.sh",
diff --git a/src/address.js b/src/address.js
index 1c392a4..2559625 100644
--- a/src/address.js
+++ b/src/address.js
@@ -10,22 +10,11 @@ class Address {
     else tmp.restURL = config.restURL
 
     this.restURL = tmp.restURL
-    this.apiToken = tmp.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
   }
diff --git a/src/bch-js.js b/src/bch-js.js
index 6a12b9c..ab87038 100644
--- a/src/bch-js.js
+++ b/src/bch-js.js
@@ -47,40 +47,25 @@ class BCHJS {
       this.restURL = process.env.RESTURL
     } else this.restURL = DEFAULT_REST_API
 
-    // Retrieve the apiToken
-    this.apiToken = '' // default value.
-    if (config && config.apiToken && config.apiToken !== '') {
-      this.apiToken = config.apiToken
-    } else if (process.env.BCHJSTOKEN && process.env.BCHJSTOKEN !== '') {
-      this.apiToken = process.env.BCHJSTOKEN
+    // Retrieve the Bearer token for simple token authentication.
+    this.bearerToken = '' // default value.
+    if (config && config.bearerToken && config.bearerToken !== '') {
+      this.bearerToken = config.bearerToken
+    } else if (process.env.BCHJSBEARERTOKEN && process.env.BCHJSBEARERTOKEN !== '') {
+      this.bearerToken = process.env.BCHJSBEARERTOKEN
     }
 
-    // Retrieve the Basic Authentication password.
-    this.authPass = '' // default value.
-    if (config && config.authPass && config.authPass !== '') {
-      this.authPass = config.authPass
-    } else if (process.env.BCHJSAUTHPASS && process.env.BCHJSAUTHPASS !== '') {
-      this.authPass = process.env.BCHJSAUTHPASS
-    }
-
-    // Generate a Basic Authentication token from an auth password
+    // Generate the authentication token for the authorization header.
     this.authToken = ''
-    if (this.authPass) {
-      // console.log(`bch-js initialized with authPass: ${this.authPass}`)
-      // Generate the header for Basic Authentication.
-      const combined = `fullstackcash:${this.authPass}`
-      const base64Credential = Buffer.from(combined).toString('base64')
-      this.authToken = `Basic ${base64Credential}`
+    if (this.bearerToken) {
+      this.authToken = `Bearer ${this.bearerToken}`
     }
 
     const libConfig = {
       restURL: this.restURL,
-      apiToken: this.apiToken,
       authToken: this.authToken
     }
 
-    // console.log(`apiToken: ${this.apiToken}`)
-
     // ElectrumX indexer
     this.Electrumx = new Electrumx(libConfig)
 
diff --git a/src/blockchain.js b/src/blockchain.js
index 1cfa308..9d80a72 100644
--- a/src/blockchain.js
+++ b/src/blockchain.js
@@ -10,26 +10,13 @@ import axios from 'axios'
 class Blockchain {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
-
-    // _this = this
   }
 
   /**
diff --git a/src/control.js b/src/control.js
index 82c83ce..4e06d6c 100644
--- a/src/control.js
+++ b/src/control.js
@@ -9,26 +9,13 @@ import axios from 'axios'
 class Control {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
-
-    // _this = this
   }
 
   /**
diff --git a/src/dsproof.js b/src/dsproof.js
index c22bbfb..a90e074 100644
--- a/src/dsproof.js
+++ b/src/dsproof.js
@@ -5,23 +5,12 @@ let _this
 class DSProof {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
     this.axios = axios
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/electrumx.js b/src/electrumx.js
index 40c0790..e7bee89 100644
--- a/src/electrumx.js
+++ b/src/electrumx.js
@@ -14,30 +14,16 @@ import Blockchain from './blockchain.js'
 class ElectrumX {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
     // Encapsulate dependencies
     this.blockchain = new Blockchain(config)
-    // this.address = new Address(config)
-
-    // _this = this
   }
 
   /**
diff --git a/src/encryption.js b/src/encryption.js
index 38bf418..ce64d87 100644
--- a/src/encryption.js
+++ b/src/encryption.js
@@ -9,23 +9,12 @@ let _this
 class Encryption {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.axios = axios
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/generating.js b/src/generating.js
index f181474..4e69673 100644
--- a/src/generating.js
+++ b/src/generating.js
@@ -5,26 +5,13 @@ import axios from 'axios'
 class Generating {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
-
-    // _this = this
   }
 
   async generateToAddress (blocks, address, maxtries = 1000000) {
diff --git a/src/mining.js b/src/mining.js
index f4fd6a3..5920330 100644
--- a/src/mining.js
+++ b/src/mining.js
@@ -5,26 +5,13 @@ import axios from 'axios'
 class Mining {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
-
-    // _this = this
   }
 
   async getBlockTemplate (templateRequest) {
diff --git a/src/price.js b/src/price.js
index c285170..ed94f16 100644
--- a/src/price.js
+++ b/src/price.js
@@ -4,25 +4,12 @@ import axios from 'axios'
 
 class Price {
   constructor (config) {
-    // _this = this
-
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/psf-slp-indexer.js b/src/psf-slp-indexer.js
index 27a2358..194de4c 100644
--- a/src/psf-slp-indexer.js
+++ b/src/psf-slp-indexer.js
@@ -18,30 +18,17 @@ import SlpUtils from './slp/utils.js'
 class PsfSlpIndexer {
   constructor (config = {}) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
     // Encapsulate dependencies
     this.rawTransaction = new RawTransaction(config)
     this.slpUtils = new SlpUtils(config)
-
-    // _this = this
   }
 
   /**
diff --git a/src/raw-transactions.js b/src/raw-transactions.js
index 636e36a..a6ca83c 100644
--- a/src/raw-transactions.js
+++ b/src/raw-transactions.js
@@ -5,29 +5,15 @@ import axios from 'axios'
 class RawTransactions {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
-    // Encapsulate dependencies
     this.axios = axios
-
-    // this = this
   }
 
   /**
diff --git a/src/schnorr.js b/src/schnorr.js
index d01afe0..d7dceed 100644
--- a/src/schnorr.js
+++ b/src/schnorr.js
@@ -3,22 +3,11 @@ import schnorr from 'bip-schnorr'
 class Schnorr {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
   }
diff --git a/src/slp/slp.js b/src/slp/slp.js
index 38c595c..1247f24 100644
--- a/src/slp/slp.js
+++ b/src/slp/slp.js
@@ -19,22 +19,11 @@ import Utils from './utils.js'
 class SLP {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/slp/tokentype1.js b/src/slp/tokentype1.js
index 92fc726..e62b44d 100644
--- a/src/slp/tokentype1.js
+++ b/src/slp/tokentype1.js
@@ -21,22 +21,11 @@ let _this // local global
 class TokenType1 {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/slp/utils.js b/src/slp/utils.js
index 0c1f83b..4e26b4a 100644
--- a/src/slp/utils.js
+++ b/src/slp/utils.js
@@ -12,24 +12,13 @@ let _this
 class Utils {
   constructor (config = {}) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.slpParser = slpParser
     this.authToken = config.authToken
     this.axios = axios
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
 
diff --git a/src/util.js b/src/util.js
index 4c9f074..0241b4a 100644
--- a/src/util.js
+++ b/src/util.js
@@ -5,26 +5,13 @@
 class Util {
   constructor (config) {
     this.restURL = config.restURL
-    this.apiToken = config.apiToken
     this.authToken = config.authToken
 
-    if (this.authToken) {
-      // Add Basic Authentication token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: this.authToken
-        }
-      }
-    } else {
-      // Add JWT token to the authorization header.
-      this.axiosOptions = {
-        headers: {
-          authorization: `Token ${this.apiToken}`
-        }
+    this.axiosOptions = {
+      headers: {
+        authorization: this.authToken
       }
     }
-
-    // _this = this
   }
 
   /**