Trail
Every access, recorded.
Reads, writes, exports and permission changes, captured at the driver and storage layer. No sampling, no agent-side filtering.
SQL · object storage · warehouse
§ 00Signal Nine v4.2sealing every second
Know what touched your data, and when.
Signal Nine records every read, write and export on your databases and buckets into a sealed, append-only ledger. When something goes wrong, you get the answer in seconds, with the proof attached.
1.8% CPU per nodeCapture overhead
1secondSeal interval
2.6s at p95Query, 7 years back
3waysDeploy targets, incl. air-gapped
Ledger · node ash-03Example · invented datablock 88 214 377
§ 0101 / 08
Three jobs, done without sampling.
Signal Nine sits under your applications, not inside them. Nothing to change in your code.
Seal
Proof nothing was edited.
Each second of events is hashed into a chain. An edit or a gap breaks every seal after it, and the break says where.
SHA-256 chain · 1 s blocks
Replay
The answer, not a log dump.
Ask who read a table between 02:00 and 02:40 and get the events back with their seals, ready to hand to an auditor.
console · API · signed export
§ 0202 / 08
Five parts. One of them is the point.
The sealer is what makes the ledger evidence rather than a log: every second it closes a block and chains it to the one before.
Data path
Nothing leaves your network unless you choose the hosted ledger. Row contents are never copied; only which rows, by whom, from where.
§ 0303 / 08
One event, every field.
This is the whole record. Seven fields, the same for every source, so one query covers your database, your buckets and your warehouse.
| Field | Example | Meaning |
|---|---|---|
| event | e_7Q2K-19F4-0081 | Unique id, sortable by time |
| at | 2026-03-14T02:17:09.412Z | Time on the node, corrected against the sealer clock |
| actor | svc-reporting · key k_44a1 | The person or service key that made the call |
| action | READ | READ, WRITE, EXPORT, GRANT or REVOKE |
| object | warehouse.customers · 1 204 rows | What was touched and how much, never the contents |
| origin | 10.20.4.17 · node ash-03 | Where the call came from and which node saw it |
| seal | block 88 214 377 · 9f3c…e21a | The block this event was sealed into |
§ 0404 / 08
Measured, then sealed.
40 000Events per nodeper second, sustained
1 sSeal intervalfixed, not batched by load
2.6 sQuery p95across 7 years of one node
10 yrsRetentionwrite-once storage
Example figures from our reference rig (12 nodes, mixed read and write load). Your numbers come from a two-week trial on your own systems.
Nine blocks, each sealed to the last. Edit one and see what breaks.
- #1a41c
- #207be
- #3d9f2
- #43e81
- #5c5a0
- #66f17
- #7b2d4
- #808e9
- #9f7c3
All 9 seals verify.
§ 0505 / 08
Runs where your data already lives.
Same ledger, same console, three places to keep it. You hold the keys in all three.
| Your cloud | Signal Nine cloud | Air-gapped | |
|---|---|---|---|
| Ledger lives | Your account | Our EU region | Your rack |
| Keys held by | You | You (we never see them) | You |
| Updates | Monthly, you approve | Monthly, automatic | Signed bundle, by hand |
| Setup | One afternoon | One hour | Two days, on site |
§ 0606 / 08
What it does not do.
Worth knowing before the review, not after the contract.
- 01
It does not block access.
It records it. Keep your access controls; Signal Nine tells you what they let through.
- 02
It does not read row contents.
It records which rows were touched, never what is in them.
- 03
It does not replace backups.
The ledger proves what happened. Your backups put things back.
- 04
It does not call home when air-gapped.
No licence check, no telemetry, no update pings.
§ 0707 / 08
Priced per node. That's all.
| Team | Scale | Air-gapped | |
|---|---|---|---|
| Nodes | Up to 20 | 21 and up | Any |
| Per node, per month | €40 | €30 | Annual licence |
| Retention | 2 years | 10 years | 10 years |
| Support | Engineers, next working day | Engineers, 4 hours | Named engineer |
Every plan includes the full ledger, the console and the API. No per-query or per-seat charges.
§ 0808 / 08
Talk to an engineer, not a sales team.
A 30-minute technical review: bring your architecture, we bring the spec and answer every question on the record.
Technical reviewreview@signal-nine.example
Office
Unit 9, Ferrow Yard
Kestle