diff --git a/src/routes/v3/blockbook.js b/src/routes/v3/blockbook.js
new file mode 100644
index 0000000..eded070
--- /dev/null
+++ b/src/routes/v3/blockbook.js
@@ -0,0 +1,382 @@
+/*
+  Bitcore Node API route
+*/
+
+"use strict"
+
+const express = require("express")
+const requestUtils = require("./services/requestUtils")
+const axios = require("axios")
+const routeUtils = require("./route-utils")
+const wlogger = require("../../util/winston-logging")
+
+const router = express.Router()
+
+// Used for processing error messages before sending them to the user.
+const util = require("util")
+util.inspect.defaultOptions = { depth: 1 }
+
+const BITBOXJS = require("@chris.troutner/bitbox-js")
+const BITBOX = new BITBOXJS()
+
+//const BITCORE_URL = process.env.BITCORE_URL
+
+// Connect the route endpoints to their handler functions.
+router.get("/", root)
+router.get("/balance/:address", balanceSingle)
+
+// Root API endpoint. Simply acknowledges that it exists.
+function root(req, res, next) {
+  return res.json({ status: "address" })
+}
+
+// Query the Bitcore Node API for a balance on a single BCH address.
+// Returns a Promise.
+async function balanceFromBlockbook(thisAddress) {
+  try {
+    //console.log(`BITCORE_URL: ${BITCORE_URL}`)
+
+    // Convert the address to a cashaddr without a prefix.
+    const addr = BITBOX.Address.toCashAddress(thisAddress, false)
+
+    // Determine if we are working with the testnet or mainnet networks.
+    let network = "mainnet"
+    if (process.env.NETWORK === "testnet") network = "testnet"
+
+    const path = `${process.env.BLOCKBOOK_URL}api/v2/address/${addr}`
+
+    // Query the Bitcore Node API.
+    const axiosResponse = await axios.get(path)
+    const retData = axiosResponse.data
+    //console.log(`retData: ${util.inspect(retData)}`)
+
+    return retData
+  } catch (err) {
+    // Dev Note: Do not log error messages here. Throw them instead and let the
+    // parent function handle it.
+    throw err
+  }
+}
+
+// GET handler for single balance
+async function balanceSingle(req, res, next) {
+  try {
+    const address = req.params.address
+
+    if (!address || address === "") {
+      res.status(400)
+      return res.json({ error: "address can not be empty" })
+    }
+
+    // Reject if address is an array.
+    if (Array.isArray(address)) {
+      res.status(400)
+      return res.json({
+        error: "address can not be an array. Use POST for bulk upload."
+      })
+    }
+
+    wlogger.debug(
+      `Executing bitcore/balanceSingle with this address: `,
+      address
+    )
+
+    // Ensure the input is a valid BCH address.
+    try {
+      const legacyAddr = BITBOX.Address.toLegacyAddress(address)
+    } catch (err) {
+      res.status(400)
+      return res.json({
+        error: `Invalid BCH address. Double check your address is valid: ${address}`
+      })
+    }
+
+    // Prevent a common user error. Ensure they are using the correct network address.
+    const networkIsValid = routeUtils.validateNetwork(address)
+    if (!networkIsValid) {
+      res.status(400)
+      return res.json({
+        error: `Invalid network. Trying to use a testnet address on mainnet, or vice versa.`
+      })
+    }
+
+    // Query the Bitcore Node API.
+    const retData = await balanceFromBlockbook(address)
+
+    // Return the retrieved address information.
+    res.status(200)
+    return res.json(retData)
+  } catch (err) {
+    // Attempt to decode the error message.
+    const { msg, status } = routeUtils.decodeError(err)
+    if (msg) {
+      res.status(status)
+      return res.json({ error: msg })
+    }
+
+    // Write out error to error log.
+    wlogger.error(`Error in blockbook.js/balanceSingle().`, err)
+
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+}
+/*
+// POST handler for bulk queries on address details
+async function balanceBulk(req, res, next) {
+  try {
+    let addresses = req.body.addresses
+    const currentPage = req.body.page ? parseInt(req.body.page, 10) : 0
+
+    // Reject if addresses is not an array.
+    if (!Array.isArray(addresses)) {
+      res.status(400)
+      return res.json({
+        error: "addresses needs to be an array. Use GET for single address."
+      })
+    }
+
+    // Enforce array size rate limits
+    if (!routeUtils.validateArraySize(req, addresses)) {
+      res.status(429) // https://github.com/Bitcoin-com/rest.bitcoin.com/issues/330
+      return res.json({
+        error: `Array too large.`
+      })
+    }
+
+    wlogger.debug(
+      `Executing bitcore.js/balanceBulk with these addresses: `,
+      addresses
+    )
+
+    // Validate each element in the address array.
+    for (let i = 0; i < addresses.length; i++) {
+      const thisAddress = addresses[i]
+
+      // Ensure the input is a valid BCH address.
+      try {
+        BITBOX.Address.toLegacyAddress(thisAddress)
+      } catch (err) {
+        res.status(400)
+        return res.json({
+          error: `Invalid BCH address. Double check your address is valid: ${thisAddress}`
+        })
+      }
+
+      // Prevent a common user error. Ensure they are using the correct network address.
+      const networkIsValid = routeUtils.validateNetwork(thisAddress)
+      if (!networkIsValid) {
+        res.status(400)
+        return res.json({
+          error: `Invalid network for address ${thisAddress}. Trying to use a testnet address on mainnet, or vice versa.`
+        })
+      }
+    }
+
+    // Loops through each address and creates an array of Promises, querying
+    // Insight API in parallel.
+    addresses = addresses.map(async (address, index) =>
+      balanceFromBitcore(address)
+    )
+
+    // Wait for all parallel Insight requests to return.
+    const result = await axios.all(addresses)
+
+    // Return the array of retrieved address information.
+    res.status(200)
+    return res.json(result)
+  } catch (err) {
+    // Attempt to decode the error message.
+    const { msg, status } = routeUtils.decodeError(err)
+    if (msg) {
+      res.status(status)
+      return res.json({ error: msg })
+    }
+
+    wlogger.error(`Error in bitcore.js/balanceBulk().`, err)
+
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+}
+
+// Query the Bitcore Node API for utxos associated with a BCH address.
+// Returns a Promise.
+async function utxosFromBitcore(thisAddress) {
+  try {
+    //console.log(`BITCORE_URL: ${BITCORE_URL}`)
+
+    // Convert the address to a cashaddr without a prefix.
+    const addr = BITBOX.Address.toCashAddress(thisAddress, false)
+
+    // Determine if we are working with the testnet or mainnet networks.
+    let network = "mainnet"
+    if (process.env.NETWORK === "testnet") network = "testnet"
+
+    const path = `${process.env.BITCORE_URL}api/BCH/${network}/address/${addr}/?unspent=true`
+
+    // Query the Bitcore Node API.
+    const axiosResponse = await axios.get(path)
+    const retData = axiosResponse.data
+    //console.log(`retData: ${util.inspect(retData)}`)
+
+    return retData
+  } catch (err) {
+    // Dev Note: Do not log error messages here. Throw them instead and let the
+    // parent function handle it.
+    throw err
+  }
+}
+
+// GET handler for single balance
+async function utxosSingle(req, res, next) {
+  try {
+    const address = req.params.address
+
+    if (!address || address === "") {
+      res.status(400)
+      return res.json({ error: "address can not be empty" })
+    }
+
+    // Reject if address is an array.
+    if (Array.isArray(address)) {
+      res.status(400)
+      return res.json({
+        error: "address can not be an array. Use POST for bulk upload."
+      })
+    }
+
+    wlogger.debug(
+      `Executing bitcore/balanceSingle with this address: `,
+      address
+    )
+
+    // Ensure the input is a valid BCH address.
+    try {
+      const legacyAddr = BITBOX.Address.toLegacyAddress(address)
+    } catch (err) {
+      res.status(400)
+      return res.json({
+        error: `Invalid BCH address. Double check your address is valid: ${address}`
+      })
+    }
+
+    // Prevent a common user error. Ensure they are using the correct network address.
+    const networkIsValid = routeUtils.validateNetwork(address)
+    if (!networkIsValid) {
+      res.status(400)
+      return res.json({
+        error: `Invalid network. Trying to use a testnet address on mainnet, or vice versa.`
+      })
+    }
+
+    // Query the Bitcore Node API.
+    const retData = await utxosFromBitcore(address)
+
+    // Return the retrieved address information.
+    res.status(200)
+    return res.json(retData)
+  } catch (err) {
+    // Attempt to decode the error message.
+    const { msg, status } = routeUtils.decodeError(err)
+    if (msg) {
+      res.status(status)
+      return res.json({ error: msg })
+    }
+
+    // Write out error to error log.
+    wlogger.error(`Error in bitcore.js/utxosSingle().`, err)
+
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+}
+
+// POST handler for bulk queries on address utxos
+async function utxosBulk(req, res, next) {
+  try {
+    let addresses = req.body.addresses
+    const currentPage = req.body.page ? parseInt(req.body.page, 10) : 0
+
+    // Reject if addresses is not an array.
+    if (!Array.isArray(addresses)) {
+      res.status(400)
+      return res.json({
+        error: "addresses needs to be an array. Use GET for single address."
+      })
+    }
+
+    // Enforce array size rate limits
+    if (!routeUtils.validateArraySize(req, addresses)) {
+      res.status(429) // https://github.com/Bitcoin-com/rest.bitcoin.com/issues/330
+      return res.json({
+        error: `Array too large.`
+      })
+    }
+
+    wlogger.debug(
+      `Executing bitcore.js/utxosBulk with these addresses: `,
+      addresses
+    )
+
+    // Validate each element in the address array.
+    for (let i = 0; i < addresses.length; i++) {
+      const thisAddress = addresses[i]
+
+      // Ensure the input is a valid BCH address.
+      try {
+        BITBOX.Address.toLegacyAddress(thisAddress)
+      } catch (err) {
+        res.status(400)
+        return res.json({
+          error: `Invalid BCH address. Double check your address is valid: ${thisAddress}`
+        })
+      }
+
+      // Prevent a common user error. Ensure they are using the correct network address.
+      const networkIsValid = routeUtils.validateNetwork(thisAddress)
+      if (!networkIsValid) {
+        res.status(400)
+        return res.json({
+          error: `Invalid network for address ${thisAddress}. Trying to use a testnet address on mainnet, or vice versa.`
+        })
+      }
+    }
+
+    // Loops through each address and creates an array of Promises, querying
+    // Insight API in parallel.
+    addresses = addresses.map(async (address, index) =>
+      utxosFromBitcore(address)
+    )
+
+    // Wait for all parallel Insight requests to return.
+    const result = await axios.all(addresses)
+
+    // Return the array of retrieved address information.
+    res.status(200)
+    return res.json(result)
+  } catch (err) {
+    // Attempt to decode the error message.
+    const { msg, status } = routeUtils.decodeError(err)
+    if (msg) {
+      res.status(status)
+      return res.json({ error: msg })
+    }
+
+    wlogger.error(`Error in bitcore.js/utxosBulk().`, err)
+
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+}
+*/
+module.exports = {
+  router,
+  testableComponents: {
+    root,
+    balanceSingle
+    //balanceBulk,
+    //utxosSingle,
+    //utxosBulk
+  }
+}
diff --git a/test/v3/blockbook.js b/test/v3/blockbook.js
new file mode 100644
index 0000000..b8af026
--- /dev/null
+++ b/test/v3/blockbook.js
@@ -0,0 +1,600 @@
+/*
+  TESTS FOR THE BLOCKBOOK.JS LIBRARY
+
+  This test file uses the environment variable TEST to switch between unit
+  and integration tests. By default, TEST is set to 'unit'. Set this variable
+  to 'integration' to run the tests against BCH mainnet.
+
+  To-Do:
+*/
+
+"use strict"
+
+const chai = require("chai")
+const assert = chai.assert
+const blockbookRoute = require("../../src/routes/v3/blockbook")
+const nock = require("nock") // HTTP mocking
+
+let originalUrl // Used during transition from integration to unit tests.
+
+// Mocking data.
+const { mockReq, mockRes } = require("./mocks/express-mocks")
+const mockData = require("./mocks/bitcore-mock")
+
+// Used for debugging.
+const util = require("util")
+util.inspect.defaultOptions = { depth: 1 }
+
+describe("#Blockbook Router", () => {
+  let req, res, mockServerUrl
+
+  before(() => {
+    originalUrl = process.env.BLOCKBOOK_URL
+
+    // Set default environment variables for unit tests.
+    if (!process.env.TEST) process.env.TEST = "unit"
+    if (process.env.TEST === "unit") {
+      process.env.BLOCKBOOK_URL = "http://fakeurl/api/"
+      mockServerUrl = `http://fakeurl`
+    }
+    // console.log(`Testing type is: ${process.env.TEST}`)
+  })
+
+  // Setup the mocks before each test.
+  beforeEach(() => {
+    // Mock the req and res objects used by Express routes.
+    req = mockReq
+    res = mockRes
+
+    // Explicitly reset the parmas and body.
+    req.params = {}
+    req.body = {}
+    req.query = {}
+
+    // Activate nock if it's inactive.
+    if (!nock.isActive()) nock.activate()
+  })
+
+  afterEach(() => {
+    // Clean up HTTP mocks.
+    nock.cleanAll() // clear interceptor list.
+    nock.restore()
+  })
+
+  after(() => {
+    process.env.BLOCKBOOK_URL = originalUrl
+  })
+
+  describe("#root", () => {
+    // root route handler.
+    const root = blockbookRoute.testableComponents.root
+
+    it("should respond to GET for base route", async () => {
+      const result = root(req, res)
+
+      assert.equal(result.status, "address", "Returns static string")
+    })
+  })
+
+  describe("#Balance Single", () => {
+    // details route handler.
+    const balanceSingle = blockbookRoute.testableComponents.balanceSingle
+
+    it("should throw 400 if address is empty", async () => {
+      const result = await balanceSingle(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ["error"])
+      assert.include(result.error, "address can not be empty")
+    })
+
+    it("should error on an array", async () => {
+      req.params.address = [`qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`]
+
+      const result = await balanceSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "address can not be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should throw an error for an invalid address", async () => {
+      req.params.address = `02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+
+      const result = await balanceSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "Invalid BCH address",
+        "Proper error message"
+      )
+    })
+
+    it("should detect a network mismatch", async () => {
+      req.params.address = `bitcoincash:qqqvv56zepke5k0xeaehlmjtmkv9ly2uzgkxpajdx3`
+
+      const result = await balanceSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(result.error, "Invalid network", "Proper error message")
+    })
+
+    it("should throw 500 when network issues", async () => {
+      const savedUrl = process.env.BLOCKBOOK_URL
+
+      try {
+        req.params.address = `qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+
+        // Switch the Insight URL to something that will error out.
+        process.env.BLOCKBOOK_URL = "http://fakeurl/api/"
+
+        const result = await balanceSingle(req, res)
+
+        // Restore the saved URL.
+        process.env.BLOCKBOOK_URL = savedUrl
+
+        assert.equal(res.statusCode, 500, "HTTP status code 500 expected.")
+        assert.include(result.error, "ENOTFOUND", "Error message expected")
+      } catch (err) {
+        // Restore the saved URL.
+        process.env.BLOCKBOOK_URL = savedUrl
+      }
+    })
+
+    it("should get balance for a single address", async () => {
+      req.params.address = `bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(`${process.env.BLOCKBOOK_URL}`)
+          .get(uri => uri.includes("/"))
+          .reply(200, mockData.mockBalance)
+      }
+
+      // Call the details API.
+      const result = await balanceSingle(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ["confirmed", "unconfirmed", "balance"])
+      assert.isNumber(result.confirmed)
+      assert.isNumber(result.unconfirmed)
+      assert.isNumber(result.balance)
+    })
+  })
+  /*
+  describe("#Balance Bulk", () => {
+    // details route handler.
+    const balanceBulk = blockbookRoute.testableComponents.balanceBulk
+
+    it("should throw an error for an empty body", async () => {
+      req.body = {}
+
+      const result = await balanceBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "addresses needs to be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should error on non-array single address", async () => {
+      req.body = {
+        address: `qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+      }
+
+      const result = await balanceBulk(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "addresses needs to be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should throw an error for an invalid address", async () => {
+      req.body = {
+        addresses: [`02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`]
+      }
+
+      const result = await balanceBulk(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "Invalid BCH address",
+        "Proper error message"
+      )
+    })
+
+    it("should throw 400 error if addresses array is too large", async () => {
+      const testArray = []
+      for (var i = 0; i < 25; i++) testArray.push("")
+
+      req.body.addresses = testArray
+
+      const result = await balanceBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ["error"])
+      assert.include(result.error, "Array too large")
+    })
+
+    it("should detect a network mismatch", async () => {
+      req.body = {
+        addresses: [`bitcoincash:qqqvv56zepke5k0xeaehlmjtmkv9ly2uzgkxpajdx3`]
+      }
+
+      const result = await balanceBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(result.error, "Invalid network", "Proper error message")
+    })
+
+    it("should throw 500 when network issues", async () => {
+      const savedUrl = process.env.BITCOINCOM_BASEURL
+
+      try {
+        req.body = {
+          addresses: [`bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`]
+        }
+
+        // Switch the Insight URL to something that will error out.
+        process.env.BITCOINCOM_BASEURL = "http://fakeurl/api/"
+
+        const result = await balanceBulk(req, res)
+        //console.log(`network issue result: ${util.inspect(result)}`)
+
+        // Restore the saved URL.
+        process.env.BITCOINCOM_BASEURL = savedUrl
+
+        assert.isAbove(res.statusCode, 499, "HTTP status code 500 expected.")
+        //assert.include(result.error, "ENOTFOUND", "Error message expected")
+        assert.include(
+          result.error,
+          "Network error: Could not communicate",
+          "Error message expected"
+        )
+      } catch (err) {
+        // Restore the saved URL.
+        process.env.BITCOINCOM_BASEURL = savedUrl
+      }
+    })
+
+    it("should get details for a single address", async () => {
+      req.body = {
+        addresses: [`bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`]
+      }
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(mockServerUrl)
+          .get(uri => uri.includes("/"))
+          .reply(200, mockData.mockBalance)
+      }
+
+      // Call the details API.
+      const result = await balanceBulk(req, res)
+      // console.log(`result: ${util.inspect(result)}`)
+
+      assert.isArray(result)
+      assert.hasAllKeys(result[0], ["confirmed", "unconfirmed", "balance"])
+      assert.isNumber(result[0].confirmed)
+      assert.isNumber(result[0].unconfirmed)
+      assert.isNumber(result[0].balance)
+    })
+
+    it("should get details for multiple addresses", async () => {
+      req.body = {
+        addresses: [
+          `bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`,
+          `bchtest:qzknfggae0av6yvxk77gmyq7syc67yux6sk80haqyr`
+        ]
+      }
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(mockServerUrl)
+          .get(uri => uri.includes("/"))
+          .times(2)
+          .reply(200, mockData.mockBalance)
+      }
+
+      // Call the details API.
+      const result = await balanceBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.isArray(result)
+      assert.equal(result.length, 2, "2 outputs for 2 inputs")
+    })
+  })
+
+  describe("#UTXOs Single", () => {
+    // details route handler.
+    const utxosSingle = blockbookRoute.testableComponents.utxosSingle
+
+    it("should throw 400 if address is empty", async () => {
+      const result = await utxosSingle(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ["error"])
+      assert.include(result.error, "address can not be empty")
+    })
+
+    it("should error on an array", async () => {
+      req.params.address = [`qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`]
+
+      const result = await utxosSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "address can not be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should throw an error for an invalid address", async () => {
+      req.params.address = `02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+
+      const result = await utxosSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "Invalid BCH address",
+        "Proper error message"
+      )
+    })
+
+    it("should detect a network mismatch", async () => {
+      req.params.address = `bitcoincash:qqqvv56zepke5k0xeaehlmjtmkv9ly2uzgkxpajdx3`
+
+      const result = await utxosSingle(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(result.error, "Invalid network", "Proper error message")
+    })
+
+    it("should throw 500 when network issues", async () => {
+      const savedUrl = process.env.BLOCKBOOK_URL
+
+      try {
+        req.params.address = `qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+
+        // Switch the Insight URL to something that will error out.
+        process.env.BLOCKBOOK_URL = "http://fakeurl/api/"
+
+        const result = await utxosSingle(req, res)
+
+        // Restore the saved URL.
+        process.env.BLOCKBOOK_URL = savedUrl
+
+        assert.equal(res.statusCode, 500, "HTTP status code 500 expected.")
+        assert.include(result.error, "ENOTFOUND", "Error message expected")
+      } catch (err) {
+        // Restore the saved URL.
+        process.env.BLOCKBOOK_URL = savedUrl
+      }
+    })
+
+    it("should get utxos for a single address", async () => {
+      req.params.address = `bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(`${process.env.BLOCKBOOK_URL}`)
+          .get(uri => uri.includes("/"))
+          .reply(200, mockData.mockUtxos)
+      }
+
+      // Call the details API.
+      const result = await utxosSingle(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.isArray(result)
+      assert.hasAnyKeys(result[0], [
+        "_id",
+        "chain",
+        "network",
+        "coinbase",
+        "mintIndex",
+        "spentTxid",
+        "mintTxid",
+        "mintHeight",
+        "spentHeight",
+        "address",
+        "script",
+        "value",
+        "confirmations"
+      ])
+    })
+  })
+
+  describe("#UTXO Bulk", () => {
+    // details route handler.
+    const utxosBulk = blockbookRoute.testableComponents.utxosBulk
+
+    it("should throw an error for an empty body", async () => {
+      req.body = {}
+
+      const result = await utxosBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "addresses needs to be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should error on non-array single address", async () => {
+      req.body = {
+        address: `qzs02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`
+      }
+
+      const result = await utxosBulk(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "addresses needs to be an array",
+        "Proper error message"
+      )
+    })
+
+    it("should throw an error for an invalid address", async () => {
+      req.body = {
+        addresses: [`02v05l7qs5s24srqju498qu55dwuj0cx5ehjm2c`]
+      }
+
+      const result = await utxosBulk(req, res)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(
+        result.error,
+        "Invalid BCH address",
+        "Proper error message"
+      )
+    })
+
+    it("should throw 400 error if addresses array is too large", async () => {
+      const testArray = []
+      for (var i = 0; i < 25; i++) testArray.push("")
+
+      req.body.addresses = testArray
+
+      const result = await utxosBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.hasAllKeys(result, ["error"])
+      assert.include(result.error, "Array too large")
+    })
+
+    it("should detect a network mismatch", async () => {
+      req.body = {
+        addresses: [`bitcoincash:qqqvv56zepke5k0xeaehlmjtmkv9ly2uzgkxpajdx3`]
+      }
+
+      const result = await utxosBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.equal(res.statusCode, 400, "HTTP status code 400 expected.")
+      assert.include(result.error, "Invalid network", "Proper error message")
+    })
+
+    it("should throw 500 when network issues", async () => {
+      const savedUrl = process.env.BITCOINCOM_BASEURL
+
+      try {
+        req.body = {
+          addresses: [`bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`]
+        }
+
+        // Switch the Insight URL to something that will error out.
+        process.env.BITCOINCOM_BASEURL = "http://fakeurl/api/"
+
+        const result = await utxosBulk(req, res)
+        //console.log(`network issue result: ${util.inspect(result)}`)
+
+        // Restore the saved URL.
+        process.env.BITCOINCOM_BASEURL = savedUrl
+
+        assert.isAbove(res.statusCode, 499, "HTTP status code 500 expected.")
+        //assert.include(result.error, "ENOTFOUND", "Error message expected")
+        assert.include(
+          result.error,
+          "Network error: Could not communicate",
+          "Error message expected"
+        )
+      } catch (err) {
+        // Restore the saved URL.
+        process.env.BITCOINCOM_BASEURL = savedUrl
+      }
+    })
+
+    it("should get details for a single address", async () => {
+      req.body = {
+        addresses: [`bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`]
+      }
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(mockServerUrl)
+          .get(uri => uri.includes("/"))
+          .reply(200, mockData.mockUtxos)
+      }
+
+      // Call the details API.
+      const result = await utxosBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.isArray(result)
+      assert.isArray(result[0])
+      assert.hasAnyKeys(result[0][0], [
+        "_id",
+        "chain",
+        "network",
+        "coinbase",
+        "mintIndex",
+        "spentTxid",
+        "mintTxid",
+        "mintHeight",
+        "spentHeight",
+        "address",
+        "script",
+        "value",
+        "confirmations"
+      ])
+    })
+
+    it("should get details for multiple addresses", async () => {
+      req.body = {
+        addresses: [
+          `bchtest:qq89kjkeqz9mngp8kl3dpmu43y2wztdjqu500gn4c4`,
+          `bchtest:qzknfggae0av6yvxk77gmyq7syc67yux6sk80haqyr`
+        ]
+      }
+
+      // Mock the Insight URL for unit tests.
+      if (process.env.TEST === "unit") {
+        nock(mockServerUrl)
+          .get(uri => uri.includes("/"))
+          .times(2)
+          .reply(200, mockData.mockUtxos)
+      }
+
+      // Call the details API.
+      const result = await utxosBulk(req, res)
+      //console.log(`result: ${util.inspect(result)}`)
+
+      assert.isArray(result)
+      assert.isArray(result[0])
+      assert.hasAnyKeys(result[0][0], [
+        "_id",
+        "chain",
+        "network",
+        "coinbase",
+        "mintIndex",
+        "spentTxid",
+        "mintTxid",
+        "mintHeight",
+        "spentHeight",
+        "address",
+        "script",
+        "value",
+        "confirmations"
+      ])
+    })
+  })
+  */
+})