diff --git a/server/package-lock.json b/server/package-lock.json
index f0a8169..8ed6151 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -120,6 +120,14 @@
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@@ -924,6 +1009,11 @@
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@@ -1058,6 +1229,72 @@
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@@ -1183,12 +1463,26 @@
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+      "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.5.0.tgz",
+      "integrity": "sha512-4nlO/14t3BNUZRXIXfXe+3N6w3s1KoxcJUUURctd64BLRe67E4gRwp4PjywtDY72fXpZ1y6Ch0VZQRY/gMPzzQ==",
+      "requires": {
+        "global": "~4.3.0",
+        "is-function": "^1.0.1",
+        "parse-headers": "^2.0.0",
+        "xtend": "^4.0.0"
+      }
+    },
+    "xhr-request": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/xhr-request/-/xhr-request-1.1.0.tgz",
+      "integrity": "sha512-Y7qzEaR3FDtL3fP30k9wO/e+FBnBByZeybKOhASsGP30NIkRAAkKD/sCnLvgEfAIEC1rcmK7YG8f4oEnIrrWzA==",
+      "requires": {
+        "buffer-to-arraybuffer": "^0.0.5",
+        "object-assign": "^4.1.1",
+        "query-string": "^5.0.1",
+        "simple-get": "^2.7.0",
+        "timed-out": "^4.0.1",
+        "url-set-query": "^1.0.0",
+        "xhr": "^2.0.4"
+      }
+    },
+    "xhr-request-promise": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/xhr-request-promise/-/xhr-request-promise-0.1.2.tgz",
+      "integrity": "sha1-NDxE0e53JrhkgGloLQ+EDIO0Jh0=",
+      "requires": {
+        "xhr-request": "^1.0.1"
+      }
+    },
+    "xhr2-cookies": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz",
+      "integrity": "sha1-fXdEnQmZGX8VXLc7I99yUF7YnUg=",
+      "requires": {
+        "cookiejar": "^2.1.1"
+      }
+    },
     "xml-name-validator": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
       "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==",
       "dev": true
     },
+    "xmlhttprequest": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1.8.0.tgz",
+      "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
+    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -6627,6 +9043,11 @@
       "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
       "dev": true
     },
+    "yaeti": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
+      "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
+    },
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
@@ -6663,6 +9084,15 @@
         "decamelize": "^1.2.0"
       }
     },
+    "yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha1-x+sXyT4RLLEIb6bY5R+wZnt5pfk=",
+      "requires": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    },
     "yn": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.0.tgz",
diff --git a/server/package.json b/server/package.json
index 516639a..3ec0913 100644
--- a/server/package.json
+++ b/server/package.json
@@ -12,6 +12,7 @@
     "test:watch": "jest --coverage --watch"
   },
   "dependencies": {
+    "@oceanprotocol/squid": "^0.5.5",
     "body-parser": "^1.18.3",
     "color-js": "^1.0.5",
     "compression": "^1.7.4",
@@ -22,7 +23,8 @@
     "morgan": "^1.9.1",
     "multer": "^1.4.1",
     "request": "^2.88.0",
-    "uuid": "^3.3.2"
+    "uuid": "^3.3.2",
+    "web3": "^1.0.0-beta.52"
   },
   "devDependencies": {
     "@types/body-parser": "^1.17.0",
diff --git a/server/src/config/config.ts b/server/src/config/config.ts
index ef9bbe0..9fa3ec4 100644
--- a/server/src/config/config.ts
+++ b/server/src/config/config.ts
@@ -1,6 +1,26 @@
 const config = {
     app: {
-        port: 4000
+        port: 4000,
+        serviceScheme: 'http',
+        serviceHost: 'localhost',
+        servicePort: 4000,
+        nodeScheme: 'http',
+        nodeHost: 'localhost',
+        nodePort: 8545,
+        aquariusScheme: 'http',
+        aquariusHost: 'aquarius',
+        aquariusPort: 5000,
+        brizoScheme: 'http',
+        brizoHost: 'localhost',
+        brizoPort: 8030,
+        brizoAddress: '0x376817c638d2a04f475a73af37f7b51a2862d567',
+        parityScheme: 'http',
+        parityHost: 'localhost',
+        parityPort: 8545,
+        secretStoreScheme: 'http',
+        secretStoreHost: 'localhost',
+        secretStorePort: 12001,
+        verbose: true
     }
 }
 
diff --git a/server/src/routes/RetireRouter.ts b/server/src/routes/RetireRouter.ts
new file mode 100644
index 0000000..9f80837
--- /dev/null
+++ b/server/src/routes/RetireRouter.ts
@@ -0,0 +1,65 @@
+import { Router, Request, Response } from 'express'
+import { getProviders } from '../utils'
+
+export class RetireRouter {
+    public router: Router
+
+    /**
+     * Initialize the RetireRouter
+     */
+    public constructor() {
+        this.router = Router()
+    }
+
+    public async retireDid(req: Request, res: Response) {
+        if (!req.body.did || !req.body.signature) {
+            return res.send({
+                status: 'error',
+                message: 'Missing did or signature'
+            })
+        }
+        const providers = await getProviders()
+        try {
+            const userAccount = await providers.web3.eth.personal.ecRecover(
+                `You are retiring ${req.body.did}`,
+                req.body.signature
+            )
+            const events = await providers.ocean.keeper.didRegistry.contract.getPastEvents(
+                'DIDAttributeRegistered',
+                {
+                    filter: {
+                        _owner: userAccount,
+                        _did: req.body.did.replace('did:op:', '0x')
+                    },
+                    fromBlock: 0,
+                    toBlock: 'latest'
+                }
+            )
+            if (events.length > 0) {
+                // TODO: retire asset in Aquarius
+                res.send({ status: 'success' })
+            } else {
+                return res.send({
+                    status: 'error',
+                    message: 'Not owner of asset'
+                })
+            }
+        } catch (error) {
+            return res.send({ status: 'error' })
+        }
+    }
+
+    /**
+     * Take each handler, and attach to one of the Express.Router's
+     * endpoints.
+     */
+    public init() {
+        this.router.post('/', this.retireDid)
+    }
+}
+
+// Create the retireRouter, and export its configured Express.Router
+const retireRouter = new RetireRouter()
+retireRouter.init()
+
+export default retireRouter.router
diff --git a/server/src/routes/UpdateRouter.ts b/server/src/routes/UpdateRouter.ts
new file mode 100644
index 0000000..91eeb7c
--- /dev/null
+++ b/server/src/routes/UpdateRouter.ts
@@ -0,0 +1,65 @@
+import { Router, Request, Response } from 'express'
+import { getProviders } from '../utils'
+
+export class UpdateRouter {
+    public router: Router
+
+    /**
+     * Initialize the UpdateRouter
+     */
+    public constructor() {
+        this.router = Router()
+    }
+
+    public async updateDid(req: Request, res: Response) {
+        if (!req.body.did || !req.body.signature) {
+            return res.send({
+                status: 'error',
+                message: 'Missing did or signature'
+            })
+        }
+        const providers = await getProviders()
+        try {
+            const userAccount = await providers.web3.eth.personal.ecRecover(
+                `You are retiring ${req.body.did}`,
+                req.body.signature
+            )
+            const events = await providers.ocean.keeper.didRegistry.contract.getPastEvents(
+                'DIDAttributeRegistered',
+                {
+                    filter: {
+                        _owner: userAccount,
+                        _did: req.body.did.replace('did:op:', '0x')
+                    },
+                    fromBlock: 0,
+                    toBlock: 'latest'
+                }
+            )
+            if (events.length > 0) {
+                // TODO: update asset in Aquarius
+                res.send({ status: 'success' })
+            } else {
+                return res.send({
+                    status: 'error',
+                    message: 'Not owner of asset'
+                })
+            }
+        } catch (error) {
+            return res.send({ status: 'error' })
+        }
+    }
+
+    /**
+     * Take each handler, and attach to one of the Express.Router's
+     * endpoints.
+     */
+    public init() {
+        this.router.post('/', this.updateDid)
+    }
+}
+
+// Create the updateRouter, and export its configured Express.Router
+const updateRouter = new UpdateRouter()
+updateRouter.init()
+
+export default updateRouter.router
diff --git a/server/src/routes/UrlCheckRouter.ts b/server/src/routes/UrlCheckRouter.ts
index 403610e..4f3a2b3 100644
--- a/server/src/routes/UrlCheckRouter.ts
+++ b/server/src/routes/UrlCheckRouter.ts
@@ -11,7 +11,7 @@ export class UrlCheckRouter {
         this.router = Router()
     }
 
-    public checkUrl(req: Request, res: Response, next: NextFunction) {
+    public checkUrl(req: Request, res: Response) {
         if (!req.body.url) {
             return res.send({ status: 'error', message: 'missing url' })
         }
diff --git a/server/src/server.ts b/server/src/server.ts
index 71a0f7a..f51965e 100644
--- a/server/src/server.ts
+++ b/server/src/server.ts
@@ -6,6 +6,8 @@ import bodyParser from 'body-parser'
 
 // routes
 import UrlCheckRouter from './routes/UrlCheckRouter'
+import UpdateRouter from './routes/UpdateRouter'
+import RetireRouter from './routes/RetireRouter'
 
 // config
 import config from './config/config'
@@ -51,9 +53,11 @@ app.use(bodyParser.urlencoded({ extended: false }))
 app.use(compression())
 // routes
 app.use('/api/v1/urlcheck', UrlCheckRouter)
+app.use('/api/v1/updateDdo', UpdateRouter)
+app.use('/api/v1/retireDdo', RetireRouter)
 
 /// catch 404
-app.use((req, res, next) => {
+app.use((req, res) => {
     res.status(404).send()
 })
 
diff --git a/server/src/utils.ts b/server/src/utils.ts
new file mode 100644
index 0000000..248c067
--- /dev/null
+++ b/server/src/utils.ts
@@ -0,0 +1,39 @@
+import Web3 from 'web3'
+import { Ocean } from '@oceanprotocol/squid'
+import config from './config/config'
+
+export function getProviders() {
+    return new Promise<any>(async (resolve, reject) => {
+        const nodeUri = `${config.app.nodeScheme}://${config.app.nodeHost}:${
+            config.app.nodePort
+        }`
+        const aquariusUri = `${config.app.aquariusScheme}://${
+            config.app.aquariusHost
+        }:${config.app.aquariusPort}`
+        const brizoUri = `${config.app.brizoScheme}://${config.app.brizoHost}:${
+            config.app.brizoPort
+        }`
+        const parityUri = `${config.app.parityScheme}://${
+            config.app.parityHost
+        }:${config.app.parityPort}`
+        const secretStoreUri = `${config.app.secretStoreScheme}://${
+            config.app.secretStoreHost
+        }:${config.app.secretStorePort}`
+        const web3 = new Web3(nodeUri)
+        const oceanConfig = {
+            web3Provider: web3,
+            nodeUri,
+            aquariusUri,
+            brizoUri,
+            brizoAddress: config.app.brizoAddress,
+            parityUri,
+            secretStoreUri,
+            verbose: config.app.verbose
+        }
+        const ocean = await Ocean.getInstance(oceanConfig)
+        resolve({
+            ocean,
+            web3
+        })
+    })
+}