Proof that your TV and radio ads really aired.
Monitor listens to TV and radio channels day and night, recognises each of your ads, and tells you when one was missed, cut short or aired at the wrong time, with a recording as proof.
Status: Validated in the lab on simulated channels with real station processing. Pilot deployments on live channels are available.
Every airing, logged
Each ad is recognised by its sound within seconds, on every channel you follow.
Checked against what you bought
Missed, short, wrong-time and wrong-version airings are flagged automatically.
Brand mentions too
Hears your brand or your sponsor's name inside programmes, not only in ad breaks.
Proof that holds up
A sealed recording of each airing, ready for a dispute or an invoice check.
Who it is for: Advertisers, media agencies, broadcasters' sales teams and regulators.
The live wall
Four simulated channels, each drawn as an edit timeline of the last 30 minutes. Each block is an ad recognised by its sound.
Three ways to buy
Rent it
We run it for you, in the region you choose. You pay monthly and get support.
Run it on your servers
An annual licence to install it in your own building or cloud. Your videos never leave your network.
Own the code
You buy the full source code with documentation and a handover from the engineers who wrote it.
The technical detail
For your engineers: what it does exactly, how it is built, the numbers we measured and how it compares.
What it does
24/7 monitoring of TV, radio and streams: detect every spot by its audio fingerprint, check it against what was ordered, hear brand mentions inside programmes and keep a clip as proof.
Fingerprint detection
Landmark audio fingerprints recognise a known spot in seconds, even with music beds and channel processing.
Aired versus ordered
Detections are reconciled with the booking or traffic log: missed spots, wrong times and short airings are flagged.
Brand mentions
Speech recognition listens inside programmes for sponsor and brand names, with fuzzy matching that survives recognition errors.
Sponsorship checks
Contract rules such as a minimum number of mentions, or a competitor brand in a sponsored show, become automatic checks.
Proof of play
Each airing and each violation is cut as a clip and sealed with a SHA-256 hash, ready for a dispute.
Dashboards and alerts
A channel timeline, live alerts and evidence packs; reports to email or webhook.
On the roadmap: logo and on-screen text recognition, direct transport-stream ingest and digitally signed evidence.
How it works
Capture
Channels are recorded around the clock from antenna, satellite, IP or stream.
Fingerprint
Audio is fingerprinted and matched against your library of spots.
Listen
Speech recognition finds brand mentions inside programmes.
Reconcile
Detections are checked against the order and the contract rules.
Prove
Clips are cut and hashed; reports and alerts go out.
Numbers, with their method
Every figure on this site comes from a run we can repeat. Where a number is a target, it says so.
MethodLab channels with real station processing simulated (level, codecs, noise, speed changes). Real broadcasts are measured in each pilot.
MethodSame lab set.
MethodLive matcher on the lab streams; median 10 s before the spot ends.
MethodLocal speech recognition (Whisper small) on CPU.
Specifications
| Sources | TV, radio and internet streams |
|---|---|
| Detection | Landmark audio fingerprinting at 8 kHz |
| Mentions | On-premises speech recognition with fuzzy brand matching |
| Evidence | Clips sealed with SHA-256 |
| Outputs | Dashboard, alerts, evidence packs; PDF, Excel and CSV reports |
| Deployment | Hosted, or capture nodes in your country under licence |
| Logo and on-screen text | Roadmap |
How it compares
| Capability | Castix Monitor | ACRCloud | Audible Magic | TVEyes | Media Monitors | Nielsen Ad Intel |
|---|---|---|---|---|---|---|
| Fingerprint ad detection | Yes | Yes | Yes | Partial | Yes | Yes |
| Aired versus ordered | Yes | Not verified | No | Partial | Not verified | No |
| Brand mentions by speech | Yes | Not verified | No | Yes | No | No |
| Proof-of-play clips | Yes | Yes | No | Yes | Not verified | No |
| On-premises | Yes | Not verified | Partial | No | No | No |
Competitor facts were checked on the vendors' own pages on 6 November 2026. Links are in our research notes. "Not verified" means we could not confirm it.
Licensing and pricing models
Prices depend on volume and deployment. We quote within two working days.
Detect
Per channel, monthlyFingerprint detection of your spots with clips.
Verify
Per channel, monthlyAdds aired-versus-ordered reconciliation and evidence packs.
Intelligence
Per channel, monthlyAdds brand mentions, sponsorship rules and share-of-voice reports.
National deployment
Licence plus capture nodesCapture and processing in your country, with source licence on request.
Questions buyers ask
How accurate is detection on real broadcasts?
On our lab channels it found 97.4% of airings with no false alarms, under codec, noise and speed changes. We measure real broadcasts in each pilot and publish the result with its conditions.
Which channels can you monitor?
Any channel we can receive: antenna, satellite, IP or an internet stream. In a national deployment the capture nodes sit in your country.
Can it catch ads it has never heard?
Discovery of new, repeated content is on the pilot plan. Known spots are matched against your library from day one.
What counts as proof?
A clip of the airing with channel, start time and a SHA-256 hash recorded at capture, so later tampering shows.
Which languages does it understand?
Ads are recognised by their sound, so the language does not matter. Brand mentions use speech recognition that covers about 100 languages.
How is it priced?
Per channel per month in three tiers, or as a national licence with capture nodes.