diff --git a/tools/upend_js/index.ts b/tools/upend_js/index.ts
index a70e9a9..21326fb 100644
--- a/tools/upend_js/index.ts
+++ b/tools/upend_js/index.ts
@@ -1,25 +1,19 @@
-import type {
-  Address,
-  IEntry,
-  ListingResult,
-  OrderedListing,
-  VALUE_TYPE,
-} from "./types";
+import type { IEntry, ListingResult, VALUE_TYPE } from "./types";
 
-export function listingAsOrdered(listing: ListingResult): OrderedListing {
-  const entries = Object.entries(listing) as [Address, IEntry][];
-  return entries
-    .sort(([_, a], [__, b]) =>
-      String(a.value.c).localeCompare(String(b.value.c))
-    )
-    .sort(([_, a], [__, b]) =>
-      String(a.value.t).localeCompare(String(b.value.t))
-    )
-    .sort(([_, a], [__, b]) => a.attribute.localeCompare(b.attribute));
-}
+// export function listingAsOrdered(listing: ListingResult): OrderedListing {
+//   const entries = Object.entries(listing) as [Address, IEntry][];
+//   return entries
+//     .sort(([_, a], [__, b]) =>
+//       String(a.value.c).localeCompare(String(b.value.c))
+//     )
+//     .sort(([_, a], [__, b]) =>
+//       String(a.value.t).localeCompare(String(b.value.t))
+//     )
+//     .sort(([_, a], [__, b]) => a.attribute.localeCompare(b.attribute));
+// }
 
 export class UpListing {
-  private entries: UpEntry[];
+  public readonly entries: UpEntry[];
 
   constructor(listing: ListingResult) {
     this.entries = Object.entries(listing).map((lr) => new UpEntry(...lr));
@@ -46,17 +40,27 @@ export class UpObject {
     this.entries = entries;
   }
 
+  public bindAppend(entries: UpEntry[]) {
+    this.entries.push(...entries);
+  }
+
+  public get attributes() {
+    return this.entries.filter((e) => e.entity === this.address);
+  }
+
+  public get backlinks() {
+    return this.entries.filter((e) => e.value.c === this.address);
+  }
+
   public get attr() {
     const result = {} as { [key: string]: UpEntry[] };
-    this.entries
-      .filter((e) => e.entity == this.address)
-      .forEach((entry) => {
-        if (!result[entry.attribute]) {
-          result[entry.attribute] = [];
-        }
+    this.attributes.forEach((entry) => {
+      if (!result[entry.attribute]) {
+        result[entry.attribute] = [];
+      }
 
-        result[entry.attribute].push(entry);
-      });
+      result[entry.attribute].push(entry);
+    });
 
     return result;
   }
@@ -65,6 +69,25 @@ export class UpObject {
     return this.attr[attr] ? this.attr[attr][0].value.c : undefined;
   }
 
+  public identify(): string[] {
+    // Get all places where this Object is "had"
+    const hasEntries = this.backlinks
+      .filter((entry) => entry.attribute === "HAS")
+      .map((entry) => entry.address);
+
+    // Out of those relations, retrieve their ALIAS attrs
+    const hasAliases = this.entries
+      .filter(
+        (entry) =>
+          entry.attribute === "ALIAS" && hasEntries.includes(entry.entity)
+      )
+      .map((entry) => String(entry.value.c));
+
+    const lblValues = (this.attr["LBL"] || []).map((e) => String(e.value.c));
+
+    return lblValues.concat(hasAliases);
+  }
+
   public asDict() {
     return {
       address: this.address,
diff --git a/tools/upend_js/types.ts b/tools/upend_js/types.ts
index 7b825f7..6e4adbd 100644
--- a/tools/upend_js/types.ts
+++ b/tools/upend_js/types.ts
@@ -11,7 +11,7 @@ export interface ListingResult {
   [key: string]: IEntry;
 }
 
-export type OrderedListing = [Address, IEntry][];
+// export type OrderedListing = [Address, IEntry][];
 
 export interface Job {
   title: string;
diff --git a/ui/src/components/Address.svelte b/ui/src/components/Address.svelte
index 00795ec..f9ba4b0 100644
--- a/ui/src/components/Address.svelte
+++ b/ui/src/components/Address.svelte
@@ -1,10 +1,10 @@
 <script lang="ts">
   import { createEventDispatcher } from "svelte";
   import { BLOB_TYPE_ADDR } from "upend/constants";
-  import { identify, useEntity } from "../lib/entity";
   import HashBadge from "./HashBadge.svelte";
   import Ellipsis from "./Ellipsis.svelte";
   import UpLink from "./UpLink.svelte";
+  import { useEntity } from "../lib/entity";
   const dispatch = createEventDispatcher();
 
   export let address: string;
@@ -14,22 +14,18 @@
 
   let resolving = resolve;
 
-  $: ({ attributes, backlinks } = useEntity(address, () => resolve));
+  $: ({ entity } = useEntity(address));
 
   // isFile
-  $: isFile = $attributes.some(
-    ([_, attr]) => attr.attribute === "IS" && attr.value.c === BLOB_TYPE_ADDR
-  );
+  $: isFile = $entity?.get("IS") === BLOB_TYPE_ADDR;
 
   // Identification
   let inferredIds: string[] = [];
   $: {
     if (resolve) {
       resolving = true;
-      identify($attributes, $backlinks).then((inferredEntries) => {
-        inferredIds = inferredEntries;
-        resolving = false;
-      });
+      inferredIds = $entity?.identify() || [];
+      resolving = false;
     }
   }
 
@@ -41,19 +37,19 @@
 <div class="address" class:identified={Boolean(inferredIds)} class:banner>
   <HashBadge {address} />
   <div class="separator" />
-    <div class="label" class:resolving title={label}>
-      {#if banner && isFile}
-        <a href="/api/raw/{address}" target="_blank">
-          <Ellipsis value={label} />
-        </a>
-      {:else if link}
-        <UpLink to={{ entity: address }}>
-          <Ellipsis value={label} />
-        </UpLink>
-      {:else}
+  <div class="label" class:resolving title={label}>
+    {#if banner && isFile}
+      <a href="/api/raw/{address}" target="_blank">
+        <Ellipsis value={label} />
+      </a>
+    {:else if link}
+      <UpLink to={{ entity: address }}>
+        <Ellipsis value={label} />
+      </UpLink>
+    {:else}
       <Ellipsis value={label} />
-      {/if}
-    </div>
+    {/if}
+  </div>
 </div>
 
 <style scoped lang="scss">
diff --git a/ui/src/components/AttributeView.svelte b/ui/src/components/AttributeView.svelte
index 88de280..36f3752 100644
--- a/ui/src/components/AttributeView.svelte
+++ b/ui/src/components/AttributeView.svelte
@@ -1,14 +1,14 @@
 <script lang="ts">
   import { createEventDispatcher } from "svelte";
-  import type { IEntry } from "upend/types";
   import UpLink from "./UpLink.svelte";
   import type { Component, UpType, Widget } from "../lib/types";
   import Table from "./widgets/Table.svelte";
   import TableComponent from "./widgets/Table.svelte"; // silence false svelte(reactive-component) warnings
   import type { AttributeChange } from "../types/base";
+import type { UpEntry } from "upend";
   const dispatch = createEventDispatcher();
 
-  export let attributes: [string, IEntry][];
+  export let attributes: UpEntry[];
   export let type: UpType | undefined = undefined;
   export let address: String;
   export let title: String | undefined = undefined;
diff --git a/ui/src/components/BlobPreview.svelte b/ui/src/components/BlobPreview.svelte
index d2f901a..a7529e4 100644
--- a/ui/src/components/BlobPreview.svelte
+++ b/ui/src/components/BlobPreview.svelte
@@ -2,10 +2,9 @@
   import { useEntity } from "../lib/entity";
   export let address: string;
 
-  $: ({ attributes } = useEntity(address));
+  $: ({ entity } = useEntity(address));
 
-  $: mimeType = String($attributes.find(([_, e]) => e.attribute === "FILE_MIME")?.[1]
-    .value.c);
+  $: mimeType = String($entity?.get("FILE_MIME"));
 </script>
 
 <div class="preview" v-if="mimeType">
diff --git a/ui/src/components/Inspect.svelte b/ui/src/components/Inspect.svelte
index 0e0a07f..b2e2c33 100644
--- a/ui/src/components/Inspect.svelte
+++ b/ui/src/components/Inspect.svelte
@@ -7,6 +7,7 @@
   import BlobPreview from "./BlobPreview.svelte";
   import { setContext } from "svelte";
   import { writable } from "svelte/store";
+  import type { UpEntry } from "upend";
 
   export let address: string;
   export let index: number | undefined;
@@ -17,12 +18,9 @@
 
   setContext("browse", { index: indexStore });
 
-  $: ({ error, revalidate, attributes, backlinks } = useEntity(address));
+  $: ({ entity, error, revalidate } = useEntity(address));
 
-  $: allTypeAddresses = $attributes
-    .map(([_, attr]) => attr)
-    .filter((attr) => attr.attribute == "IS")
-    .map((attr) => attr.value.c);
+  $: allTypeAddresses = ($entity?.attr["IS"] || []).map((attr) => attr.value.c);
 
   $: allTypeEntries = query(
     () =>
@@ -34,19 +32,19 @@
   let allTypes: { [key: string]: UpType } = {};
   $: {
     allTypes = {};
-    $allTypeEntries.forEach(([_, entry]) => {
+    ($allTypeEntries?.entries || []).forEach((entry) => {
       if (allTypes[entry.entity] === undefined) {
         allTypes[entry.entity] = new UpType(entry.entity);
       }
 
       switch (entry.attribute) {
         case "TYPE":
-          allTypes[entry.entity].name = entry.value.c;
+          allTypes[entry.entity].name = String(entry.value.c);
           break;
         case "TYPE_HAS":
         case "TYPE_REQUIRES":
         case "TYPE_ID":
-          allTypes[entry.entity].attributes.push(entry.value.c);
+          allTypes[entry.entity].attributes.push(String(entry.value.c));
           break;
       }
     });
@@ -54,14 +52,14 @@
     allTypes = allTypes;
   }
 
-  let typedAttributes = {} as { [key: string]: [string, IEntry][] };
-  let untypedAttributes = [] as [string, IEntry][];
+  let typedAttributes = {} as { [key: string]: UpEntry[] };
+  let untypedAttributes = [] as UpEntry[];
 
   $: {
     typedAttributes = {};
     untypedAttributes = [];
 
-    $attributes.forEach(([entryAddr, entry]) => {
+    ($entity?.attributes || []).forEach((entry) => {
       const entryTypes = Object.entries(allTypes).filter(([_, t]) =>
         t.attributes.includes(entry.attribute)
       );
@@ -70,10 +68,10 @@
           if (typedAttributes[addr] == undefined) {
             typedAttributes[addr] = [];
           }
-          typedAttributes[addr].push([entryAddr, entry]);
+          typedAttributes[addr].push(entry);
         });
       } else {
-        untypedAttributes.push([entryAddr, entry]);
+        untypedAttributes.push(entry);
       }
     });
 
@@ -82,9 +80,9 @@
   }
 
   $: filteredUntypedAttributes = untypedAttributes.filter(
-    ([_, entry]) =>
+    (entry) =>
       entry.attribute !== "IS" ||
-      !Object.keys(typedAttributes).includes(entry.value.c)
+      !Object.keys(typedAttributes).includes(String(entry.value.c))
   );
 </script>
 
@@ -113,11 +111,11 @@
           on:changed={revalidate}
         />
       {/if}
-      {#if $backlinks.length > 0}
+      {#if $entity?.backlinks.length > 0}
         <AttributeView
-          title={`Referred to (${$backlinks.length})`}
+          title={`Referred to (${$entity.backlinks.length})`}
           {address}
-          attributes={$backlinks}
+          attributes={$entity.backlinks}
           reverse
           on:changed={revalidate}
         />
diff --git a/ui/src/components/widgets/List.svelte b/ui/src/components/widgets/List.svelte
index fbc8e89..3b6aaed 100644
--- a/ui/src/components/widgets/List.svelte
+++ b/ui/src/components/widgets/List.svelte
@@ -1,13 +1,14 @@
 <script lang="ts">
-  import type { OrderedListing } from "upend/types";
+import type { UpEntry } from "upend";
+
   import Table from "./Table.svelte";
 
-  export let attributes: OrderedListing;
+  export let attributes: UpEntry[];
   export let attribute: string;
   export let editable = false;
 
   $: filteredAttributes = attributes.filter(
-    ([_, entry]) => entry.attribute === attribute
+    (entry) => entry.attribute === attribute
   );
 </script>
 
diff --git a/ui/src/components/widgets/Table.svelte b/ui/src/components/widgets/Table.svelte
index cdcd8dc..414051f 100644
--- a/ui/src/components/widgets/Table.svelte
+++ b/ui/src/components/widgets/Table.svelte
@@ -1,20 +1,20 @@
 <script lang="ts">
   import filesize from "filesize";
   import { format, fromUnixTime } from "date-fns";
-  import type { OrderedListing } from "upend/types";
   import Ellipsis from "../Ellipsis.svelte";
   import Address from "../Address.svelte";
   import { createEventDispatcher, getContext } from "svelte";
   import type { AttributeChange } from "../../types/base";
   import { useParams } from "svelte-navigator";
   import type { Writable } from "svelte/store";
+  import type { UpEntry } from "upend";
   const dispatch = createEventDispatcher();
   const params = useParams();
 
   export let columns = "attribute, value";
   export let header = true;
 
-  export let attributes: OrderedListing;
+  export let attributes: UpEntry[];
   export let editable = false;
 
   // Display
@@ -61,7 +61,7 @@
   let sortKeys: { [key: string]: string } = {};
   $: sortedAttributes = attributes
     .concat()
-    .sort(([_, aEntry], [__, bEntry]) => {
+    .sort((aEntry, bEntry) => {
       if (
         sortKeys[aEntry.value.c] === undefined ||
         sortKeys[bEntry.value.c] === undefined
@@ -71,16 +71,16 @@
         } else if (!sortKeys[aEntry.value.c] && sortKeys[bEntry.value.c]) {
           return 1;
         } else {
-          return aEntry.value.c.localeCompare(bEntry.value.c);
+          return String(aEntry.value.c).localeCompare(String(bEntry.value.c));
         }
       } else {
         return sortKeys[aEntry.value.c].localeCompare(sortKeys[bEntry.value.c]);
       }
     })
-    .sort(([_, aEntry], [__, bEntry]) => {
+    .sort((aEntry, bEntry) => {
       return aEntry.attribute.localeCompare(bEntry.attribute);
     })
-    .sort(([_, aEntry], [__, bEntry]) => {
+    .sort((aEntry, bEntry) => {
       if (
         sortKeys[aEntry.entity] === undefined ||
         sortKeys[bEntry.entity] === undefined
@@ -108,16 +108,21 @@
     FILE_SIZE: "File size",
   };
 
-  const VALUE_FORMATTERS: { [key: string]: (val: string) => string } = {
-    FILE_MTIME: (val) => format(fromUnixTime(parseInt(val, 10)), "PPpp"),
-    FILE_SIZE: (val) => filesize(parseInt(val, 10), { base: 2 }),
-  };
+  const VALUE_FORMATTERS: { [key: string]: (val: string | number) => string } =
+    {
+      FILE_MTIME: (val) =>
+        format(fromUnixTime(parseInt(String(val), 10)), "PPpp"),
+      FILE_SIZE: (val) => filesize(parseInt(String(val), 10), { base: 2 }),
+    };
 
   function formatAttribute(attribute: string) {
     return ATTRIBUTE_LABELS[attribute];
   }
 
-  function formatValue(value: string, attribute: string): string | undefined {
+  function formatValue(
+    value: string | number,
+    attribute: string
+  ): string | undefined {
     const handler = VALUE_FORMATTERS[attribute];
     if (handler) {
       return handler(value);
@@ -161,7 +166,7 @@
     </tr>
   {/if}
 
-  {#each sortedAttributes as [id, entry] (id)}
+  {#each sortedAttributes as entry (entry.address)}
     <tr
       class:left-active={entry.entity == addresses[$index - 1] ||
         entry.value.c == addresses[$index - 1]}
@@ -170,7 +175,10 @@
     >
       {#if editable}
         <td class="attr-action">
-          <sl-icon-button name="x-circle" on:click={removeEntry(id)} />
+          <sl-icon-button
+            name="x-circle"
+            on:click={removeEntry(entry.address)}
+          />
         </td>
       {/if}
 
@@ -199,13 +207,13 @@
           <text-input
             {editable}
             value={entry.value.c}
-            on:edit={(val) => updateEntry(id, entry.attribute, val)}
+            on:edit={(val) => updateEntry(entry.address, entry.attribute, val)}
           >
             {#if entry.value.t === "Address"}
               <Address
                 link
-                address={entry.value.c}
-                resolve={Boolean(resolve[id]) || true}
+                address={String(entry.value.c)}
+                resolve={Boolean(resolve[entry.address]) || true}
                 on:resolved={(event) => {
                   sortKeys[entry.value.c] = event.detail[0];
                 }}
@@ -218,7 +226,7 @@
               >
                 <Ellipsis
                   value={formatValue(entry.value.c, entry.attribute) ||
-                    entry.value.c}
+                    String(entry.value.c)}
                 />
               </div>
             {/if}
diff --git a/ui/src/lib/entity.ts b/ui/src/lib/entity.ts
index 82b39e6..b06e404 100644
--- a/ui/src/lib/entity.ts
+++ b/ui/src/lib/entity.ts
@@ -1,37 +1,27 @@
 // import { useSWR } from "sswr";
-import { useSWR } from "../util/fetch";
-import { derived, Readable, readable, writable } from "svelte/store";
-import type { IEntry, ListingResult, OrderedListing } from "upend/types";
-import { listingAsOrdered, UpEntry } from "upend";
 import LRU from "lru-cache";
+import { derived, Readable, Writable, writable } from "svelte/store";
+import { UpListing, UpObject } from "upend";
+import type { ListingResult } from "upend/types";
+import { useSWR } from "../util/fetch";
 
-export function useEntity(
-  address: string | (() => string),
-  condition?: () => Boolean
-) {
-  const { data, error, revalidate } = useSWR<ListingResult, unknown>(() =>
-    condition === undefined || condition()
-      ? `/api/obj/${typeof address === "string" ? address : address()}`
-      : null
+const queryOnceLRU = new LRU<string, UpListing>(128);
+const inFlightRequests: { [key: string]: Promise<UpListing> } = {};
+
+export function useEntity(address: string) {
+  const { data, error, revalidate } = useSWR<ListingResult, unknown>(
+    () => `/api/obj/${address}`
   );
 
-  const entries = derived(data, ($values) =>
-    $values ? listingAsOrdered($values) : []
-  );
-  const attributes = derived(entries, ($entries) => {
-    const addr = typeof address === "string" ? address : address();
-    return $entries.filter(([_, e]) => e.entity === addr);
-  });
-  const backlinks = derived(entries, ($entries) => {
-    const addr = typeof address === "string" ? address : address();
-    return $entries.filter(([_, e]) => e.entity !== addr);
+  const entity: Readable<UpObject | undefined> = derived(data, ($listing) => {
+    if ($listing) {
+      const listing = new UpListing($listing);
+      return listing.objects.find((obj) => obj.address == address);
+    }
   });
 
   return {
-    entries,
-    attributes,
-    backlinks,
-    data,
+    entity,
     error,
     revalidate,
   };
@@ -45,7 +35,7 @@ export function query(query: () => string) {
   );
 
   const result = derived(data, ($values) => {
-    return $values ? listingAsOrdered($values) : [];
+    return $values ? new UpListing($values) : undefined;
   });
 
   return {
@@ -56,19 +46,15 @@ export function query(query: () => string) {
   };
 }
 
-const queryOnceLRU = new LRU<string, OrderedListing>(128);
-const inFlightRequests: { [key: string]: Promise<OrderedListing> } = {};
-
-export async function queryOnce(query: string): Promise<OrderedListing> {
+export async function queryOnce(query: string): Promise<UpListing> {
   const cacheResult = queryOnceLRU.get(query);
   if (!cacheResult) {
     const url = `/api/obj?query=${query}`;
-    let response;
     if (!inFlightRequests[url]) {
       console.debug(`Querying: ${query}`);
       inFlightRequests[url] = new Promise(async (resolve, reject) => {
         const response = await fetch(url, { keepalive: true });
-        resolve(listingAsOrdered(await response.json()));
+        resolve(new UpListing(await response.json()));
       });
     } else {
       console.debug(`Chaining request for ${query}...`);
@@ -79,28 +65,3 @@ export async function queryOnce(query: string): Promise<OrderedListing> {
     return cacheResult;
   }
 }
-
-export async function identify(
-  attributes: UpEntry[],
-  backlinks: UpEntry[]
-): Promise<string[]> {
-  // Get all entries where the object is linked
-  const hasEntries = backlinks
-    .filter((entry) => entry.attribute === "HAS")
-    .map((entry) => entry.address);
-
-  // Out of those relations, retrieve their ALIAS attrs
-  const hasAliases = hasEntries.length
-    ? await queryOnce(
-        `(matches (in ${hasEntries.map((e) => `"${e}"`).join(" ")}) "ALIAS" ?)`
-      )
-    : [];
-
-  const aliasValues = hasAliases.map(([_, entry]) => String(entry.value.c));
-
-  // Return all LBLs concatenated with named aliases
-  return attributes
-    .filter((attr) => attr.attribute === "LBL")
-    .map((attr) => String(attr.value.c))
-    .concat(aliasValues);
-}
diff --git a/ui/yarn.lock b/ui/yarn.lock
index 7bd9ab7..2bce790 100644
--- a/ui/yarn.lock
+++ b/ui/yarn.lock
@@ -3301,8 +3301,8 @@ __metadata:
 
 "upend@file:../tools/upend_js::locator=svelte-app%40workspace%3A.":
   version: 0.0.1
-  resolution: "upend@file:../tools/upend_js#../tools/upend_js::hash=0110ea&locator=svelte-app%40workspace%3A."
-  checksum: 52a706bb4738034b16ec95a0e569fc38597177fadc0a2b327ac59889b19b06d032554e0e4f47b978416f65ac96341ad5c4b6bf2c56a59d0bdafc4bcfabf1681b
+  resolution: "upend@file:../tools/upend_js#../tools/upend_js::hash=88b9af&locator=svelte-app%40workspace%3A."
+  checksum: 9076efc8b84c0c96f5d48ce092320832be93d18529af48d6ab623a3adb698401b78913ceac95439ddaaf3232a6a41ec886ad263ce2f05646ad6460d98627f8e9
   languageName: node
   linkType: hard