diff --git a/doc/API.v0.md b/doc/API.v0.md
index 85b6182..c695e5f 100644
--- a/doc/API.v0.md
+++ b/doc/API.v0.md
@@ -893,6 +893,59 @@ Proxy response:
 }
 ```
 
+### Fast address derivation using path in config and provided index (called by your application)
+
+Derives addresses for supplied index.  Must be used with derivation.pub32 and derivation.path properties in config.properties.
+
+```http
+GET http://cyphernode:8888/deriveindex_bitcoind/25-30
+GET http://cyphernode:8888/deriveindex_bitcoind/34
+```
+
+Proxy response:
+
+```json
+[
+  "2N6Q9kBcLtNswgMSLSQ5oduhbctk7hxEJW8",
+  "2NFLhFghAPKEPuZCKoeXYYxuaBxhKXbmhBV",
+  "2N7gepbQtRM5Hm4PTjvGadj9wAwEwnAsKiP",
+  "2Mth8XDZpXkY9d95tort8HYEAuEesow2tF6",
+  "2MwqEmAXhUw6H7bJwMhD13HGWVEj2HgFiNH",
+  "2N2Y4BVRdrRFhweub2ehHXveGZC3nryMEJw"
+]
+```
+
+### Fast address derivation using provided path and index (called by your application)
+
+Derives addresses for supplied pub32 and path.  config.properties' derivation.pub32 and derivation.path are not used.
+
+```http
+POST http://cyphernode:8888/derivepubpath_bitcoind
+with body...
+{"pub32":"tpubD6NzVbkrYhZ4YR3QK2tyfMMvBghAvqtNaNK1LTyDWcRHLcMUm3ZN2cGm5BS3MhCRCeCkXQkTXXjiJgqxpqXK7PeUSp86DTTgkLpcjMtpKWk","path":"0/25-30"}
+
+or
+
+{"pub32":"upub5GtUcgGed1aGH4HKQ3vMYrsmLXwmHhS1AeX33ZvDgZiyvkGhNTvGd2TA5Lr4v239Fzjj4ZY48t6wTtXUy2yRgapf37QHgt6KWEZ6bgsCLpb","path":"0/34"}
+
+or
+
+{"pub32":"vpub5SLqN2bLY4WeZF3kL4VqiWF1itbf3A6oRrq9aPf16AZMVWYCuN9TxpAZwCzVgW94TNzZPNc9XAHD4As6pdnExBtCDGYRmNJrcJ4eV9hNqcv","path":"0/25-30"}
+```
+
+Proxy response:
+
+```json
+[
+  "mz3bWMW3BWGT9YGDjJwS8TfhJMMtZ91Frm",
+  "mkjmKEX3KJrVpiqLSSxKB6jjgm3WhPnrv8",
+  "mk43Tmf6E5nsmETTaNMTZK9TikaeVJRJ4a",
+  "n1SEcVHHKpHyNr695JpXNdH6b9cWQ26qkt",
+  "mzWqwZkA31kYVy1kpMoZgvfzSDyGgEi7Yg",
+  "mp5jtEDNa88xfSQGs5yYQGk7guGWvaG4ci"
+]
+```
+
 ### Get info from Lightning Network node (called by your application)
 
 Calls getinfo from lightningd.  Useful to let your users know where to connect to.
diff --git a/doc/openapi/v0/cyphernode-api.yaml b/doc/openapi/v0/cyphernode-api.yaml
index e28f065..6a401ef 100644
--- a/doc/openapi/v0/cyphernode-api.yaml
+++ b/doc/openapi/v0/cyphernode-api.yaml
@@ -1867,6 +1867,81 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/ApiResponseTemporarilyUnavailable'
+  /deriveindex_bitcoind/{indexSpecifier}:
+    get:
+      parameters:
+        - in: "path"
+          name: "indexSpecifier"
+          description: "Index specifier. Either an integer or a range in the form n-m"
+          required: true
+          schema:
+            type: "string"
+      tags:
+        - "addresses"
+        - "core features"
+      summary: "Fast address derivation using configured xpub key and derivation path"
+      description: "Fast address derivation for supplied index. Must be used with derivation.pub32 and derivation.path properties in config.properties."
+      operationId: "deriveIndex"
+      responses:
+        '200':
+          description: "successful operation"
+          content:
+            application/json:
+              schema:
+                type: "array"
+                items:
+                  $ref: '#/components/schemas/TypeAddressString'
+        '403':
+          $ref: '#/components/schemas/ApiResponseNotAllowed'
+        '503':
+          description: "Resource temporarily unavailable"
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponseTemporarilyUnavailable'
+  /derivepubpath_bitcoind:
+    post:
+      tags:
+        - "addresses"
+        - "core features"
+      summary: "Fast address derivation using supplied xpub key and derivation path"
+      description: "Fast address derivation for supplied pub32 and path.  config.properties' derivation.pub32 and derivation.path are not used."
+      operationId: "derivePubPath"
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: "object"
+              required:
+                - "pub32"
+                - "path"
+              properties:
+                pub32:
+                  description: "xpub/ypub/zpub/tpub/upub/vpub used to derive address(es)"
+                  type: "string"
+                path:
+                  description: "Derivation path including the index, in the form n or n-m (ex.: 0/44'/86 or 0/44'/62-77)"
+                  type: "string"
+      responses:
+        '200':
+          description: "successful operation"
+          content:
+            application/json:
+              schema:
+                type: "array"
+                items:
+                  $ref: '#/components/schemas/TypeAddressString'
+        '400':
+          $ref: '#/components/schemas/ApiResponseInvalidInput'
+        '403':
+          $ref: '#/components/schemas/ApiResponseNotAllowed'
+        '503':
+          description: "Resource temporarily unavailable"
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponseTemporarilyUnavailable'
   /getmempoolinfo:
     get:
       tags:
diff --git a/proxy_docker/app/tests/test-derive.sh b/proxy_docker/app/tests/test-derive.sh
index 40db98c..00aed3b 100755
--- a/proxy_docker/app/tests/test-derive.sh
+++ b/proxy_docker/app/tests/test-derive.sh
@@ -85,6 +85,16 @@ test_derive() {
   echo -e "\nDeriving 500 addresses with derivepubpath_bitcoind (Bitcoin Core)..."
   time curl -s -H "Content-Type: application/json" -d "{\"pub32\":\"upub5GtUcgGed1aGH4HKQ3vMYrsmLXwmHhS1AeX33ZvDgZiyvkGhNTvGd2TA5Lr4v239Fzjj4ZY48t6wTtXUy2yRgapf37QHgt6KWEZ6bgsCLpb\",\"path\":\"0/0-499\"}" proxy:8888/derivepubpath_bitcoind  > /dev/null
 
+  # Deriving 500 addresses with derivepubpath (pycoin)...
+  # real	0m 18.15s
+  # user	0m 0.00s
+  # sys	0m 0.00s
+  # 
+  # Deriving 500 addresses with derivepubpath_bitcoind (Bitcoin Core)...
+  # real	0m 0.64s
+  # user	0m 0.00s
+  # sys	0m 0.00s
+
 }
 
 apk add curl jq