Memory needs context too.

Versions recovered

• 2018–2019: pages about intelligent agents, language and finding services.
• 2023: an O2O presentation and the Otwoo App article.
• 2024–2026: homepage captures from that edition.

Captures were recovered from Common Crawl WARC records. This edition rewrites the presentation and preserves meaningful addresses, including /app/ and /nilc-fakenews.

The main-domain survey covers 84 Common Crawl collections. It also preserves 60 technical robots.txt records. The historical sitemap path is used for this edition’s sitemap. Wayback coverage and recovered historical assets are detailed below. Installers and backend remain gaps; this is not a complete web archive.

Explore the Android 1.0.2 record and seven original app screens.

A recovered document is not a reactivated service

Old downloads, numbers, prices and promises of continuous operation are not adopted as current information. Material not yet found remains an explicit gap; we do not invent a reconstruction.

Research that puts the history in context

USP publications provide context for the NILC-FakeNews integration in 2018 and CheckCorona in 2020. They have their own authors. Read about Otwoo and use the source-reading guide to distinguish publication dates from capture dates.

Historical shortcuts and channels

In July and November 2019, /yb redirected to a YouTube channel. We record the destination at that time; current ownership and the channel’s videos were not confirmed in this survey.

On 21 March 2019, /premium linked to a product on otwoo.com.br. Its 2019 sales page was recovered. Its prices, comments and terms are historical, not a present offer. The address now leads to this edition’s available access routes, without reproducing an unverified commercial offer.

Recovered addresses

A capture date is not a publication date. Download the inventory and WARC references (JSON).

Images that appeared on the site

CheckCorona and the p=1149 address

The 2020 publication was recovered from the related otwoo.com.br domain. Our CheckCorona history brings together its context and limitations. Captures from that domain are identified separately from otwoo.app; they have not been added to the totals above.

What the related domains revealed

An initial related-domain survey covered 12 selected domain/collection pairs for otwoo.com.br and checkcorona.app. It preserved 86 responses: 69 project HTML captures, 13 redirects and four technical responses. These totals are separate from otwoo.app.

It also preserved 30 CSS and JavaScript resources from exact URLs cited in historical HTML. These were retrieved now, not executed, and do not replace missing site-specific files.

Three captures connect p=1149 with CheckCorona. In 2020, /core led to a maintenance notice. The checkcorona.app domain redirected to a Firebase installation link; that record does not establish that an installation is available today.

Download the initial related-domain inventory (JSON).

Six records to explore

Projects and development notes from 2019–2020. Open each record to understand its historical proposal. This showcase does not offer those services for purchase.

What remains of the interface files

The 64 recovered otwoo.app HTML documents cite 91 distinct CSS, JavaScript and font URLs. Current retrieval returned 17 valid JavaScript files; 74 URLs returned HTTP 404. No old stylesheet or font was recovered in this set.

These are the exact addresses found in preserved documents, but today’s bytes have not been verified as identical to the historical versions. The files are not executed or included in this edition. The current worksheet has its own code and does not depend on old trackers or authentication services.

Inspect the 91 references and their results (JSON). Missing files are documented as gaps, not presented as restored assets.

Those figures describe direct retrieval before the Wayback follow-up. Historical styles and fonts have since been recovered separately; see the Wayback collection below.

Arquivo.pt: two preserved error records

Arquivo.pt’s CDX found two otwoo.app records dated 19 February 2020: /nilc-fakenews and /robots.txt. Both were archived with HTTP 404. Their retrieved bodies match the index’s SHA1 digests. They are the same error document, not two restored content pages.

Domain queries for otwoo.com.br and checkcorona.app returned HTTP 200 with no records in that index. This describes those queries, not the absence of material across every archive. Both otwoo.app addresses work in this edition; a historical status is not a diagnosis of the current site.

Inspect coverage, records and both body checks (JSON).

A broader catalogue, with explicit limits

The expanded survey checked all 256 domain/collection pairs: otwoo.com.br and checkcorona.app across 128 official Common Crawl collections, including the oldest available indexes.

It found 560 index records and processed all 474 eligible responses, including 333 project HTML documents. The 79 historical records with status 404 and seven with status 503 remain index-only; their bodies were not recovered in this set. No eligible responses remain unrecovered. These totals include the initial 86 responses: do not add them together or combine them with otwoo.app captures.

Verification covered 504 SHA256 receipts, including the 30 linked resources already documented. The inventory separates original content, redirects, technical responses and a maintenance page. No responses remain unclassified. Coverage of this catalogue does not mean every file from every web archive has been recovered.

Download expanded coverage, WARC references and results (JSON).

The O2O name and the public record

The historical /o-que-significa-otwoo/ page, captured on 19 June 2019, connects Otwoo with Online-to-Offline: linking digital searches and services to experiences with local businesses. It provides context for the name and O2O symbol. It is not used to assert a current trademark registration.

Another page captured that day, /otwoo-na-midia/, collected press references. One is directly available: the Jornal da USP report of 22 October 2018 on NILC-FakeNews research. Its text was consulted again on 18 October 2026; its descriptions and results concern 2018, not a test of today’s service.

Both records have hashes and WARC references in the expanded inventory. Continue with this edition’s context or the history of NILC-FakeNews.

Reconstructed project pages

Thirteen source-grounded reconstructions connect the local-service catalogue, research pages and development accounts. Each page identifies its original document and links to related records. Repeated tag/category lists, an empty Business loader, cart and account screens are documented in the inventory rather than presented as recovered articles.

• NavegaFácil: from conversation to local search
• AAi-Comidas: a conversation-led ordering journey
• AAi-Cefaleia: the record of a digital diary
• DetectFake and DAFn: the recorded research proposal
• Otwoo Premium: the historical access model
• Models and Streamlit.app: a development account
• Digital robots, bots and chatbots: a historical discussion
• Speech and language: a reading record
• Streamlit.app hub: the preserved 2020 proposal
• Otwoo in the media: reading the historical list
• What does Otwoo mean? The O2O record
• Promote your business: a historical offer
• Gigante Local: the training record recovered

Wayback: capture history and original assets

Wayback CDX now provides 360 capture records for 128 normalised addresses. Four explicit homepage variants were checked; their histories contain the same 89 records because CDX normalises the host and protocol. They are not four separate sets.

We saved 139 distinct successful URL/digest pairs, including 63 public assets: historical stylesheets, scripts, fonts and images. Archive response bodies are stored separately from this edition’s working resources. Historical scripts and the Ghost administration interface are not executed or deployed.

Inspect the complete CDX coverage, saved-file hashes and historical status codes (JSON).

Download the preserved original files (ZIP). The package contains 121 public document/asset records and a manifest. Administrative files are omitted. It is an archival collection, not an executable replacement for this site.

The related checkcorona.app index contains nine records: three redirects and six revisits. The three original redirects were preserved and verified. The otwoo.com.br index is now recovered separately; see the Brazilian-domain collection.

Inspect the earlier related-domain attempts (JSON).

Otwoo.com.br: recovered original media

The separate otwoo.com.br Wayback index contains 1119 records for 243 normalised addresses. Of 545 successful URL/digest pairs, 545 have verified original bytes; these correspond to 498 distinct bodies. Local reuse is recorded only when the original SHA1 digest matches; it is not reported as a new HTTP retrieval.

Otwoo 2021–2022: app, features and original video. The original CheckCorona screenshot is on its project page.

Inspect the complete .br index and recovery inventory (JSON). Download the public original collection (ZIP).

Old CSS, scripts, fonts, feeds and assets remain archival files. They do not power this edition. Authentication screens, email-protection responses, old form actions and the adapted third-party book text are not deployed. The index also preserves redirects, revisits and errors. All indexed body digests have matching preserved bytes, including eight additional diagnostic payloads. This does not reconstruct every response header, a working backend or every archive on the web.