diff --git a/package-lock.json b/package-lock.json
index 8af035d..414a44d 100644
--- a/package-lock.json
+++ b/package-lock.json
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-        "async": "^2.1.5",
-        "find-process": "^1.0.5",
-        "fs-ext": "github:baudehlo/node-fs-ext#2ba366d9fc67ef3ab165e239068924b276ecf249",
-        "nodeify": "^1.0.1",
-        "once": "^1.4.0"
-      }
-    },
     "lodash": {
       "version": "4.17.11",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
@@ -7275,6 +13431,12 @@
       "integrity": "sha1-o6bCsOvsxcLLocF+bmIP6BtT00c=",
       "dev": true
     },
+    "lodash.without": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.without/-/lodash.without-4.4.0.tgz",
+      "integrity": "sha1-PNRXSgC2e643OpS3SHcmQFB7eqw=",
+      "dev": true
+    },
     "logplease": {
       "version": "1.2.15",
       "resolved": "https://registry.npmjs.org/logplease/-/logplease-1.2.15.tgz",
@@ -7303,13 +13465,13 @@
       }
     },
     "lru-cache": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.3.tgz",
-      "integrity": "sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==",
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.4.tgz",
+      "integrity": "sha512-EPstzZ23znHUVLKj+lcXO1KvZkrlw+ZirdwvOmnAnA/1PB4ggyXJ77LRkCqkff+ShQ+cqoxCxLQOh4cKITO5iA==",
       "dev": true,
       "requires": {
         "pseudomap": "^1.0.2",
-        "yallist": "^2.1.2"
+        "yallist": "^3.0.2"
       }
     },
     "ltgt": {
@@ -8283,14 +14445,14 @@
       "dev": true
     },
     "orbit-db": {
-      "version": "git+https://github.com/orbitdb/orbit-db.git#deef300c54c55e2fbe187db25e49318a0af35739",
-      "from": "git+https://github.com/orbitdb/orbit-db.git#orbit-db-access-controller",
+      "version": "git+https://github.com/orbitdb/orbit-db.git#ad620abcf9e600ae07ee1b1046854da4a286326e",
+      "from": "git+https://github.com/orbitdb/orbit-db.git#feat/odb-revocation",
       "dev": true,
       "requires": {
         "ipfs-pubsub-1on1": "~0.0.4",
         "logplease": "^1.2.14",
         "multihashes": "^0.4.12",
-        "orbit-db-access-controllers": "github:orbitdb/orbit-db-access-controllers#fde18727639b7fe05d9ec251d86fd0d4956098d3",
+        "orbit-db-access-controllers": "github:orbitdb/orbit-db-access-controllers#3f9821bb7a481df8b3174ab627ef2b5841c15b7a",
         "orbit-db-cache": "~0.2.4",
         "orbit-db-counterstore": "github:shamb0t/orbit-db-counterstore#4bd6942f5d1c2498134ee8504e99744346780e2f",
         "orbit-db-docstore": "~1.4.3",
@@ -8303,8 +14465,30 @@
         "orbit-db-store": "github:shamb0t/orbit-db-store#b5483fe3beec72fb8c98f993ea42b1345467ffd2"
       }
     },
+    "orbit-db-access-controller-store": {
+      "version": "github:orbitdb/orbit-db-access-controller-store#c948e9414f96248815eadd202f88b68fbc10dfbc",
+      "from": "github:orbitdb/orbit-db-access-controller-store",
+      "dev": true,
+      "requires": {
+        "lodash.without": "^4.4.0",
+        "orbit-db-store": "github:orbitdb/orbit-db-store#f46097215144acc482f726d0ce217945f1de6383"
+      },
+      "dependencies": {
+        "orbit-db-store": {
+          "version": "github:orbitdb/orbit-db-store#f46097215144acc482f726d0ce217945f1de6383",
+          "from": "github:orbitdb/orbit-db-store#feat/new-acs",
+          "dev": true,
+          "requires": {
+            "ipfs-log": "github:orbitdb/ipfs-log#febec397361594913fa6aad35f29de85cc526e28",
+            "logplease": "^1.2.14",
+            "p-each-series": "^1.0.0",
+            "readable-stream": "~2.3.5"
+          }
+        }
+      }
+    },
     "orbit-db-access-controllers": {
-      "version": "github:orbitdb/orbit-db-access-controllers#fde18727639b7fe05d9ec251d86fd0d4956098d3",
+      "version": "github:orbitdb/orbit-db-access-controllers#3f9821bb7a481df8b3174ab627ef2b5841c15b7a",
       "from": "github:orbitdb/orbit-db-access-controllers",
       "dev": true
     },
@@ -9203,6 +15387,25 @@
       "integrity": "sha512-N9iVG+CGJsI4b4ZGazjwLnxErD2d9Pe4DPvvXSxYA9tFNu8ymXME4Qs5HIQ0LMJpNM7zj+m0NlNnNeqFpKzqnA==",
       "dev": true
     },
+    "proper-lockfile": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/proper-lockfile/-/proper-lockfile-3.2.0.tgz",
+      "integrity": "sha512-iMghHHXv2bsxl6NchhEaFck8tvX3F9cknEEh1SUpguUOBjN7PAAW9BLzmbc1g/mCD1gY3EE2EABBHPJfFdHFmA==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "retry": "^0.12.0",
+        "signal-exit": "^3.0.2"
+      },
+      "dependencies": {
+        "graceful-fs": {
+          "version": "4.1.15",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
+          "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA==",
+          "dev": true
+        }
+      }
+    },
     "protocol-buffers-schema": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/protocol-buffers-schema/-/protocol-buffers-schema-3.3.2.tgz",
@@ -9828,6 +16031,12 @@
       "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
       "dev": true
     },
+    "retry": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/retry/-/retry-0.12.0.tgz",
+      "integrity": "sha1-G0KmJmoh8HQh0bC1S33BZ7AcATs=",
+      "dev": true
+    },
     "rimraf": {
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
@@ -10488,22 +16697,6 @@
         "is-plain-obj": "^1.0.0"
       }
     },
-    "source-map": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-      "dev": true
-    },
-    "source-map-support": {
-      "version": "0.5.9",
-      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.9.tgz",
-      "integrity": "sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==",
-      "dev": true,
-      "requires": {
-        "buffer-from": "^1.0.0",
-        "source-map": "^0.6.0"
-      }
-    },
     "sparse-array": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/sparse-array/-/sparse-array-1.3.1.tgz",
@@ -12164,12 +18357,6 @@
       "integrity": "sha1-2nNdmyT8yo282bN00W0qAe6VQcY=",
       "dev": true
     },
-    "xregexp": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
-      "integrity": "sha512-PHyM+sQouu7xspQQwELlGwwd05mXUFqwFYfqPO0cC7x4fxyHnnuetmQr6CjJiafIDoH4MogHb9dOoJzR/Y4rFg==",
-      "dev": true
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -12189,19 +18376,19 @@
       "dev": true
     },
     "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
+      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
       "dev": true
     },
     "yargs": {
-      "version": "12.0.2",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
-      "integrity": "sha512-e7SkEx6N6SIZ5c5H22RTZae61qtn3PYUE8JYbBFlK9sYmh3DMQ6E5ygtaG/2BW0JZi4WGgTR2IV5ChqlqrDGVQ==",
+      "version": "12.0.5",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
       "dev": true,
       "requires": {
         "cliui": "^4.0.0",
-        "decamelize": "^2.0.0",
+        "decamelize": "^1.2.0",
         "find-up": "^3.0.0",
         "get-caller-file": "^1.0.1",
         "os-locale": "^3.0.0",
@@ -12211,7 +18398,7 @@
         "string-width": "^2.0.0",
         "which-module": "^2.0.0",
         "y18n": "^3.2.1 || ^4.0.0",
-        "yargs-parser": "^10.1.0"
+        "yargs-parser": "^11.1.1"
       },
       "dependencies": {
         "ansi-regex": {
@@ -12248,12 +18435,13 @@
       }
     },
     "yargs-parser": {
-      "version": "10.1.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
-      "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
       "dev": true,
       "requires": {
-        "camelcase": "^4.1.0"
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
       }
     },
     "yargs-promise": {
diff --git a/package.json b/package.json
index aa1bef7..9b77dc3 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,8 @@
     "ipfs-repo": "~0.25.0",
     "ipfsd-ctl": "~0.37.5",
     "mocha": "^5.2.0",
-    "orbit-db": "https://github.com/orbitdb/orbit-db#orbit-db-access-controller",
+    "orbit-db": "https://github.com/orbitdb/orbit-db#feat/odb-revocation",
+    "orbit-db-access-controller-store": "github:orbitdb/orbit-db-access-controller-store",
     "orbit-db-identity-provider": "github:orbitdb/orbit-db-identity-provider#feat/verify-identity",
     "orbit-db-keystore": "github:orbitdb/orbit-db-keystore#fix/verification",
     "p-map-series": "^1.0.0",
diff --git a/src/orbitdb-access-controller.js b/src/orbitdb-access-controller.js
index aae3f14..196e159 100644
--- a/src/orbitdb-access-controller.js
+++ b/src/orbitdb-access-controller.js
@@ -3,6 +3,7 @@
 const pMapSeries = require('p-map-series')
 const AccessController = require('./access-controller-interface')
 const ensureAddress = require('./utils/ensure-ac-address')
+const Clock = require('ipfs-log/src/lamport-clock')
 
 const type = 'orbitdb'
 
@@ -24,16 +25,9 @@ class OrbitDBAccessController extends AccessController {
 
   // Return true if entry is allowed to be added to the database
   async canAppend (entry, identityProvider) {
-    // Write keys and admins keys are allowed
-    const access = new Set([...this.get('write'), ...this.get('admin')])
-    // If the ACL contains the writer's public key or it contains '*'
-    if (access.has(entry.identity.publicKey) || access.has('*')) {
-      const verifiedIdentity = await identityProvider.verifyIdentity(entry.identity)
-      // Allow access if identity verifies
-      return verifiedIdentity
-    }
-
-    return false
+    return (await this._db.hasAccessForEntry('write', entry) === true) ||
+      (await this._db.hasAccessForEntry('admin', entry) === true) ||
+      (await this._db.hasAccessForEntry('*', entry) === true)
   }
 
   get capabilities () {
@@ -73,7 +67,9 @@ class OrbitDBAccessController extends AccessController {
       await this._db.close()
 
     // Force '<address>/_access' naming for the database
-    this._db = await this._orbitdb.keyvalue(ensureAddress(address), {
+    this._db = await this._orbitdb.open(ensureAddress(address), {
+      type: 'access-controller',
+      create: true,
       // use ipfs controller as a immutable "root controller"
       accessController: {
         type: 'ipfs',
@@ -96,20 +92,12 @@ class OrbitDBAccessController extends AccessController {
     }
   }
 
-  async grant (capability, key) {
-    // Merge current keys with the new key
-    const capabilities = new Set([...(this._db.get(capability) || []), ...[key]])
-    await this._db.put(capability, Array.from(capabilities.values()))
+  async grant (capability, identity, options = {}) {
+    return await this._db.grant(capability, identity, options.after)
   }
 
-  async revoke (capability, key) {
-    let capabilities = new Set(this._db.get(capability) || [])
-    capabilities.delete(key)
-    if (capabilities.size > 0) {
-      await this._db.put(capability, Array.from(capabilities.values()))
-    } else {
-      await this._db.del(capability)
-    }
+  async revoke (capability, identity, options = {}) {
+    return await this._db.revoke(capability, identity, options.after)
   }
 
   /* Private methods */
@@ -122,9 +110,15 @@ class OrbitDBAccessController extends AccessController {
     const ac = new OrbitDBAccessController(orbitdb, options)
     await ac.load(options.address || 'default-access-controller')
 
+    const mockEntry1 = { 
+      identity: orbitdb.identity,
+      clock: new Clock(orbitdb.identity.publicKey, 0) 
+    }
+
     // Add write access from options
     if (options.write && !options.address) {
-      await pMapSeries(options.write, async (e) => await ac.grant('write', e))
+      // TODO: how to deal with the initial access rights?
+      await pMapSeries(options.write, async (e) => await ac.grant('write', e, { after: mockEntry1 }))
     }
 
     return ac
diff --git a/test/orbit-db-access-controller-integration.test.js b/test/orbit-db-access-controller-integration.test.js
index 2c0179c..362a830 100644
--- a/test/orbit-db-access-controller-integration.test.js
+++ b/test/orbit-db-access-controller-integration.test.js
@@ -5,7 +5,9 @@ const rmrf = require('rimraf')
 const OrbitDB = require('orbit-db')
 const IdentityProvider = require('orbit-db-identity-provider')
 const Keystore = require('orbit-db-keystore')
+const AccessControllerStore = require('orbit-db-access-controller-store')
 const AccessControllers = require('../')
+const Clock = require('ipfs-log/src/lamport-clock')
 
 // Include test utilities
 const {
@@ -21,11 +23,12 @@ const ipfsPath1 = './orbitdb/tests/orbitdb-access-controller-integration/1/ipfs'
 const ipfsPath2 = './orbitdb/tests/orbitdb-access-controller-integration/2/ipfs'
 
 Object.keys(testAPIs).forEach(API => {
-  describe('orbit-db - OrbitDBAccessController Integration', function () {
+  describe.only('orbit-db - OrbitDBAccessController Integration', function () {
     this.timeout(config.timeout)
 
     let ipfsd1, ipfsd2, ipfs1, ipfs2, id1, id2
     let orbitdb1, orbitdb2
+    let mockEntry1
 
     before(async () => {
       config.daemon1.repo = ipfsPath1
@@ -45,6 +48,8 @@ Object.keys(testAPIs).forEach(API => {
       id1 = await IdentityProvider.createIdentity(keystore1, 'userAA')
       id2 = await IdentityProvider.createIdentity(keystore2, 'userBB')
 
+      OrbitDB.addDatabaseType('access-controller', AccessControllerStore)
+
       orbitdb1 = await OrbitDB.createInstance(ipfs1, {
         ACFactory: AccessControllers,
         directory: dbPath1,
@@ -56,6 +61,11 @@ Object.keys(testAPIs).forEach(API => {
         directory: dbPath2,
         identity: id2
       })
+
+      mockEntry1 = {
+        identity: id1,
+        clock: new Clock(id1.publicKey, 1)
+      }
     })
 
     after(async () => {
@@ -81,12 +91,12 @@ Object.keys(testAPIs).forEach(API => {
       let dag
       let dbManifest, acManifest
 
-      before(async () => {
+      beforeEach(async () => {
         db = await orbitdb1.feed('AABB', {
           identity: id1,
           accessController: {
             type: 'orbitdb',
-            write: [id1.publicKey]
+            write: [id1]
           }
         })
 
@@ -100,6 +110,15 @@ Object.keys(testAPIs).forEach(API => {
         acManifest = JSON.parse(acManifestDag.toJSON().data)
       })
 
+      afterEach(async () => {
+        if (db) {
+          await db.drop()
+        }
+        if (db2) {
+          await db2.drop()
+        }
+      })
+
       it('has the correct access rights after creating the database', async () => {
         assert.deepEqual(db.access.capabilities, {
           admin: new Set([id1.publicKey]),
@@ -152,6 +171,7 @@ Object.keys(testAPIs).forEach(API => {
             await db2.add('hello?')
             assert.equal('Should not end here', false)
           } catch (e) {
+            // console.log(e)
             err = e
           }
 
@@ -171,7 +191,59 @@ Object.keys(testAPIs).forEach(API => {
                   await db2.add('hello!')
                 })
                 // Give access to the second user
-                await db.access.grant('write', id2.publicKey)
+                const lastEntry = db.iterator({ limit: 1 }).collect()[0]
+                await db.access.grant('write', id2, { after: mockEntry1 })
+              } catch (e) {
+                reject(e)
+              }
+            })
+          }
+          await doChanges()
+          const res1 = await db.iterator().collect().map(e => e.payload.value)
+          const res2 = await db2.iterator().collect().map(e => e.payload.value)
+          assert.deepEqual(res1, ['hello!'])
+          assert.deepEqual(res2, ['hello!'])
+        })
+
+        it('granting and revoking access allows entries written under granted access to be in the log', async () => {
+          let err
+          try {
+            await db2.add('hello?')
+            assert.equal('Should not end here', false)
+          } catch (e) {
+            err = e
+          }
+
+          assert.equal(err, 'Error: Could not append entry, key "userBB" is not allowed to write to the log')
+
+          const doChanges = () => {
+            return new Promise(async (resolve, reject) => {
+              try {
+                // Wait for the second user's AC to notify it was updated
+                db2.access.once('updated', async () => {
+                  // Wait for the first user's db to replicate the update
+                  db.events.once('replicated', async () => {
+                    try {
+                      const lastEntry = db.iterator({ limit: 1 }).collect()[0]
+                      await db.access.revoke('write', id2, { after: lastEntry })
+                      const addr = db.address
+                      await db.close()
+                      db = await orbitdb1.feed(addr)
+                      await db.load()
+                      // FIXME: timeout to get rid of the "libp2p node not started yet" errors
+                      // setTimeout(() => resolve(), 2000)
+                      resolve()
+                    } catch (e) {
+                      // assert.equal(e, null)
+                      reject(e)
+                    }
+                  })
+                  // Try adding something again
+                  await db2.add('hello!')
+                })
+                // Give access to the second user
+                const lastEntry = db.iterator({ limit: 1 }).collect()[0]
+                await db.access.grant('write', id2, { after: mockEntry1 })
               } catch (e) {
                 reject(e)
               }
@@ -187,7 +259,7 @@ Object.keys(testAPIs).forEach(API => {
         it('can\'t grant access if doesn\'t have write access', async () => {
           let err
           try {
-            await db2.access.grant('write', id2.publicKey)
+            await db2.access.grant('write', id2, { after: mockEntry1 })
           } catch (e) {
             err = e
           }
@@ -197,7 +269,7 @@ Object.keys(testAPIs).forEach(API => {
         it('can\'t revoke access if doesn\'t have write access', async () => {
           let err
           try {
-            await db2.access.revoke('write', id1.publicKey)
+            await db2.access.revoke('write', id1, { after: mockEntry1 })
           } catch (e) {
             err = e
           }
@@ -220,7 +292,7 @@ Object.keys(testAPIs).forEach(API => {
                   resolve(err)
                 })
                 // Revoke user's access
-                await db.access.revoke('write', id2.publicKey)
+                await db.access.revoke('write', id2, { after: mockEntry1 })
               } catch (e) {
                 reject(e)
               }
diff --git a/test/orbit-db-access-controller.test.js b/test/orbit-db-access-controller.test.js
index 3422cd2..c6cc7dd 100644
--- a/test/orbit-db-access-controller.test.js
+++ b/test/orbit-db-access-controller.test.js
@@ -6,7 +6,9 @@ const OrbitDB = require('orbit-db')
 const IdentityProvider = require('orbit-db-identity-provider')
 const Keystore = require('orbit-db-keystore')
 const OrbitDBAccessController = require('../src/orbitdb-access-controller')
+const AccessControllerStore = require('orbit-db-access-controller-store')
 const AccessControllers = require('../')
+const Clock = require('ipfs-log/src/lamport-clock')
 
 // Include test utilities
 const {
@@ -22,11 +24,13 @@ const ipfsPath1 = './orbitdb/tests/orbitdb-access-controller/1/ipfs'
 const ipfsPath2 = './orbitdb/tests/orbitdb-access-controller/2/ipfs'
 
 Object.keys(testAPIs).forEach(API => {
-  describe('orbit-db - OrbitDBAccessController', function() {
+  describe.only('orbit-db - OrbitDBAccessController', function() {
     this.timeout(config.timeout)
 
-    let ipfsd1, ipfsd2, ipfs1, ipfs2, id1, id2
+    let ipfsd1, ipfsd2, ipfs1, ipfs2
+    let id1, id2, id3, id4, id5
     let orbitdb1, orbitdb2
+    let mockEntry1
 
     before(async () => {
       config.daemon1.repo = ipfsPath1
@@ -43,8 +47,19 @@ Object.keys(testAPIs).forEach(API => {
       const keystore1 = Keystore.create(dbPath1 + '/keys')
       const keystore2 = Keystore.create(dbPath2 + '/keys')
 
-      id1 = await IdentityProvider.createIdentity(keystore1, 'userAA')
-      id2 = await IdentityProvider.createIdentity(keystore2, 'userBB')
+      id1 = await IdentityProvider.createIdentity(keystore1, 'userA')
+      id2 = await IdentityProvider.createIdentity(keystore2, 'userB')
+      id3 = await IdentityProvider.createIdentity(keystore1, 'userC')
+      id4 = await IdentityProvider.createIdentity(keystore2, 'userAA')
+      id5 = await IdentityProvider.createIdentity(keystore1, 'userBB')
+
+      mockEntry1 = { 
+        identity: id1,
+        clock: new Clock(id1.publicKey, 1) 
+      }
+
+      // Add the AC store to orbitdb's databases
+      OrbitDB.addDatabaseType('access-controller', AccessControllerStore)
 
       orbitdb1 = await OrbitDB.createInstance(ipfs1, {
         ACFactory: AccessControllers,
@@ -116,7 +131,7 @@ Object.keys(testAPIs).forEach(API => {
           // ...
           // doesn't matter what we put here, only identity is used for the check
         }
-        const canAppend = await accessController.canAppend(mockEntry, id1.provider)
+        const canAppend = await accessController.canAppend(mockEntry1, id1.provider)
         assert.equal(canAppend, true)
       })
     })
@@ -136,9 +151,9 @@ Object.keys(testAPIs).forEach(API => {
 
       it('adds a capability', async () => {
         try {
-          await accessController.grant('write', id1.publicKey)
+          await accessController.grant('write', id1, { after: mockEntry1 })
         } catch (e) {
-          assert(e, null)
+          assert.equal(e, null)
         }
         assert.deepEqual(accessController.capabilities, {
           admin: new Set([id1.publicKey]),
@@ -148,17 +163,15 @@ Object.keys(testAPIs).forEach(API => {
 
       it('adds more capabilities', async () => {
         try {
-          await accessController.grant('read', 'ABCD')
-          await accessController.grant('delete', 'ABCD')
+          await accessController.grant('read', id4, { after: mockEntry1 })
+          await accessController.grant('delete', id4, { after: mockEntry1 })
         } catch (e) {
           assert.equal(e, null)
         }
-        assert.deepEqual(accessController.capabilities, {
-          admin: new Set([id1.publicKey]),
-          write: new Set([id1.publicKey]),
-          read: new Set(['ABCD']),
-          delete: new Set(['ABCD'])
-        })
+        assert.deepEqual(accessController.capabilities.admin, new Set([id1.publicKey]))
+        assert.deepEqual(accessController.capabilities.write, new Set([id1.publicKey]))
+        assert.deepEqual(accessController.capabilities.read, new Set([id4.publicKey]))
+        assert.deepEqual(accessController.capabilities.delete, new Set([id4.publicKey]))
       })
 
       it('emit \'updated\' event when a capability was added', async () => {
@@ -168,33 +181,35 @@ Object.keys(testAPIs).forEach(API => {
               assert.deepEqual(accessController.capabilities, {
                 admin: new Set([id1.publicKey]),
                 write: new Set([id1.publicKey]),
-                read: new Set(['ABCD', 'AXES']),
-                delete: new Set(['ABCD'])
+                read: new Set([id4.publicKey]),
+                delete: new Set([id4.publicKey])
               })
               resolve()
             } catch (e) {
               reject(e)
             }
           })
-          await accessController.grant('read', 'AXES')
+          await accessController.grant('read', id4, { after: mockEntry1 })
         })
       })
 
       it('can append after acquiring capability', async () => {
         try {
-          await accessController.grant('write', id1.publicKey)
-          await accessController.grant('write', id2.publicKey)
+          await accessController.grant('write', id1, { after: mockEntry1 })
+          await accessController.grant('write', id2, { after: mockEntry1 })
         } catch (e) {
-          assert(e, null)
+          assert.equal(e, null)
         }
-        const mockEntry1 = {
+        const entry1 = {
           identity: id1,
+          clock: new Clock(id1.publicKey, 2)
         }
-        const mockEntry2 = {
+        const entry2 = {
           identity: id2,
+          clock: new Clock(id2.publicKey, 2)
         }
-        const canAppend1 = await accessController.canAppend(mockEntry1, id1.provider)
-        const canAppend2 = await accessController.canAppend(mockEntry2, id2.provider)
+        const canAppend1 = await accessController.canAppend(entry1, id1.provider)
+        const canAppend2 = await accessController.canAppend(entry2, id2.provider)
         assert.equal(canAppend1, true)
         assert.equal(canAppend2, true)
       })
@@ -203,16 +218,16 @@ Object.keys(testAPIs).forEach(API => {
     describe('revoke', function () {
       let accessController
 
-      before(async () => {
+      beforeEach(async () => {
         accessController = new OrbitDBAccessController(orbitdb1)
-        await accessController.load('testdb/remove')
+        await accessController.load('testdb/remove/' + new Date().getTime())
       })
 
       it('removes a capability', async () => {
         try {
-          await accessController.grant('write', id1.publicKey)
-          await accessController.grant('write', 'AABB')
-          await accessController.revoke('write', 'AABB')
+          await accessController.grant('write', id1, { after: mockEntry1 })
+          await accessController.grant('write', id4, { after: mockEntry1 })
+          await accessController.revoke('write', id4, { after: mockEntry1 })
         } catch (e) {
           assert.equal(e, null)
         }
@@ -224,7 +239,7 @@ Object.keys(testAPIs).forEach(API => {
 
       it('can remove the creator\'s write access', async () => {
         try {
-          await accessController.revoke('write', id1.publicKey)
+          await accessController.revoke('write', id1, { after: mockEntry1 })
         } catch (e) {
           assert.equal(e, null)
         }
@@ -235,7 +250,7 @@ Object.keys(testAPIs).forEach(API => {
 
       it('can\'t remove the creator\'s admin access', async () => {
         try {
-          await accessController.revoke('admin', id1.publicKey)
+          await accessController.revoke('admin', id1, { after: mockEntry1 })
         } catch (e) {
           assert.equal(e, null)
         }
@@ -246,60 +261,57 @@ Object.keys(testAPIs).forEach(API => {
 
       it('removes more capabilities', async () => {
         try {
-          await accessController.grant('read', 'ABCD')
-          await accessController.grant('delete', 'ABCD')
-          await accessController.grant('write', id1.publicKey)
-          await accessController.revoke('read', 'ABCDE')
-          await accessController.revoke('delete', 'ABCDE')
+          await accessController.grant('read', id4, { after: mockEntry1 })
+          await accessController.grant('delete', id4, { after: mockEntry1 })
+          await accessController.grant('write', id1, { after: mockEntry1 })
+          await accessController.revoke('read', id4, { after: mockEntry1 })
+          await accessController.revoke('delete', id4, { after: mockEntry1 })
         } catch (e) {
           assert.equal(e, null)
         }
         assert.deepEqual(accessController.capabilities, {
           admin: new Set([id1.publicKey]),
-          delete: new Set(['ABCD']),
-          read: new Set(['ABCD']),
           write: new Set([id1.publicKey])
         })
       })
 
       it('can\'t append after revoking capability', async () => {
         try {
-          await accessController.grant('write', id2.publicKey)
-          await accessController.revoke('write', id2.publicKey)
+          await accessController.grant('write', id2, { after: mockEntry1 })
+          await accessController.revoke('write', id2, { after: mockEntry1 })
         } catch (e) {
-          assert(e, null)
+          assert.equal(e, null)
         }
-        const mockEntry1 = {
-          identity: id1
+        const entry1 = {
+          identity: id1,
+          clock: new Clock(id1.publicKey, 2)
         }
-        const mockEntry2 = {
-          identity: id2
+        const entry2 = {
+          identity: id2,
+          clock: new Clock(id1.publicKey, 2)
         }
-        const canAppend = await accessController.canAppend(mockEntry1, id1.provider)
-        const noAppend = await accessController.canAppend(mockEntry2, id2.provider)
+        const canAppend = await accessController.canAppend(entry1, id1.provider)
+        const noAppend = await accessController.canAppend(entry2, id2.provider)
         assert.equal(canAppend, true)
         assert.equal(noAppend, false)
       })
 
       it('emits \'updated\' event when a capability was removed', async () => {
-        await accessController.grant('admin', 'cats')
-        await accessController.grant('admin', 'dogs')
+        await accessController.grant('admin', id1, { after: mockEntry1 })
+        await accessController.grant('admin', id2, { after: mockEntry1 })
 
         return new Promise(async (resolve, reject) => {
           accessController.on('updated', () => {
             try {
               assert.deepEqual(accessController.capabilities, {
-                admin: new Set([id1.publicKey, 'dogs']),
-                delete: new Set(['ABCD']),
-                read: new Set(['ABCD']),
-                write: new Set([id1.publicKey])
+                admin: new Set([id1.publicKey]),
               })
               resolve()
             } catch (e) {
               reject(e)
             }
           })
-          await accessController.revoke('admin', 'cats')
+          await accessController.revoke('admin', id2, { after: mockEntry1 })
         })
       })
     })
@@ -311,14 +323,15 @@ Object.keys(testAPIs).forEach(API => {
         dbName = 'testdb-load-' + new Date().getTime()
         accessController = new OrbitDBAccessController(orbitdb1)
         await accessController.load(dbName)
-        await accessController.grant('write', 'A')
-        await accessController.grant('write', 'B')
-        await accessController.grant('write', 'C')
-        await accessController.grant('write', 'C') // double entry
-        await accessController.grant('another', 'AA')
-        await accessController.grant('another', 'BB')
-        await accessController.revoke('another', 'AA')
-        await accessController.grant('admin', id1.publicKey)
+        await accessController.grant('write', id1, { after: mockEntry1 })
+        await accessController.grant('write', id2, { after: mockEntry1 })
+        await accessController.grant('write', id3, { after: mockEntry1 })
+        await accessController.grant('write', id3, { after: mockEntry1 }) // double entry
+        await accessController.revoke('write', id3, { after: mockEntry1 })
+        await accessController.grant('another', id4, { after: mockEntry1 })
+        await accessController.grant('another', id5, { after: mockEntry1 })
+        await accessController.revoke('another', id4, { after: mockEntry1 })
+        await accessController.grant('admin', id1, { after: mockEntry1 })
         return new Promise(async (resolve) => {
           // Test that the access controller emits 'updated' after it was loaded
           accessController.on('updated', () => resolve())
@@ -334,8 +347,8 @@ Object.keys(testAPIs).forEach(API => {
 
       it('has correct capabalities', async () => {
         assert.deepEqual(accessController.get('admin'), new Set([id1.publicKey]))
-        assert.deepEqual(accessController.get('write'), new Set(['A', 'B', 'C']))
-        assert.deepEqual(accessController.get('another'), new Set(['BB']))
+        assert.deepEqual(accessController.get('write'), new Set([id1.publicKey, id2.publicKey]))
+        assert.deepEqual(accessController.get('another'), new Set([id5.publicKey]))
       })
     })
   })