Data anchoring and timestamping · Comparison
Bernstein vs KAS Anchor API
2 products compared side by side: what you pay for with each one first, then the five access facts, entry prices, recorded plan limits and the bottom line of each review. The evidence note under the table says how each product was checked.
Side by side
| Metric | Bernstein | KAS Anchor API |
|---|---|---|
| What you're paying for | Compliance includedCourt-oriented proof of authorship for IP files: Bitcoin anchoring plus EU qualified timestamps, without the vendor seeing your files. | Saves engineering timeAnchor private-chain block hashes or other data to the Kaia public chain through a managed API, without running a Kaia node. |
| Overall score | 3.7Best | 1.5 |
| Free option | Paid only | –Not measured |
| Card to start | –Not measured | –Not measured |
| Getting access | Self-serve | Sales call required |
| Starter priceCheapest paid plan | $54/mo | –Not measured |
| Pricing model | Tiered | Custom quote |
| Pricing page | Public prices | Prices hidden |
| What it anchors to | Bitcoin, plus EU and China timestamp authorities | Kaia mainnet (one transaction per payload) |
| Billing unit | Registration credit (one project version, up to 99 files) | Pay as you go by anchoring cycle and usage, by contact |
| Free option | None; certificate validation is free | Not stated for the Anchor API |
| Reference scenario (100,000 hashes/mo) | Not offered (no API) | Priced by sales |
| Proof you keep | PDF certificate | Transaction hash per payload |
| Verify without the vendor | Manual steps documented; browser validator | Not described |
| Only the hash leaves your systems | No; files uploaded encrypted | Yes, you choose the payload |
| Qualified timestamps (eIDAS) | EU qualified on Scale and Enterprise | No |
| SOC 2 / ISO 27001 | Not stated | Not stated |
| API and webhooks | None | REST API and caver SDK extensions; no webhooks |
| SSO | Enterprise plan, one-time setup fee | Not listed |
| Bottom line | From its public pages, Bernstein is the most legally oriented option here, with EU qualified timestamps on a self-serve plan. It is a web app for IP files, not an anchoring API, from $54 a month. | From its public pages, the KAS Anchor API is a managed route to anchor payloads on Kaia, now run by AhnLab Blockchain Company. Price, proofs and verification guidance are not on the pages. |
Evidence: Bernstein: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; KAS Anchor API: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.
Entry price
Baseline: each product's cheapest paid plan, per month. Included usage differs, so read the line under each price.
- BernsteinLowest priceStarter$54/mo1 credit a month; $540 a year (2 months free); extra credits from $39
- Up to 99 files and 10 GB per project
- Credits roll over for 3 months
- Secure sharing
- No SSO
- KAS Anchor APIKAS API Starter$300/moGeneral KAS API plan: 100,000 requests a day
- Ticket-based support
- Overuse billed at the plan rate per request × 120%
Prices as listed on each pricing page, in USD per month, excluding tax. Observed: Bernstein 2026-10-15, KAS Anchor API 2026-10-15.
Which one fits
- If you need to start today without a sales call
- BernsteinSelf-serve sign-up; the only one here you can use right after signing up.
- Lowest starter price
- Bernstein$54/mo for the Starter plan.
- Highest overall score
- Bernstein3.7/10 (Fair). The review shows the score breakdown and the run behind it.
Picked by fixed rules from the table above, not by hand. How we score
Full reviews
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