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Cybersecurity · head to head

iDenfy vs Sigstore

iDenfy logo

iDenfy

Cybersecurity

Identity verification and AML screening bundled into a single per-verification price

From
On request
Rated
-
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: iDenfy rates are quoted rather than published on an accessible page, so despite the marketing emphasis on transparency you still need a sales conversation to get a number.; Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • They diverge on capability: iDenfy covers Document verification, Sigstore covers Fulcio.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which iDenfy and Sigstore actually diverge.

Attributes where iDenfy and Sigstore differ
AttributeiDenfySigstore
Starting priceOn requestFree
Pricing modelPer verificationOpen source, public instance free to use
Free tierNoYes
PlatformsWeb, iOS, Android, APIWeb, Linux, macOS, Windows, Self-hosted

Identical on both: user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in iDenfy

  • Document verification
  • Human review on all cases
  • AML screening
  • Business verification
  • Proof of address
  • NFC chip reading

Only in Sigstore

  • Fulcio
  • Rekor
  • Keyless signing
  • Multi-language clients
  • Timestamp authority
  • Neutral governance

What people use each for

The jobs each tool is most often brought in to do.

iDenfy

  • A European fintech that needs KYC and AML screening and wants one price rather than four line itemsnot Sigstore
  • A gambling operator in a regulated EU market needing age and identity assurance with EU data processingnot Sigstore
  • A crypto platform with modest volume that cannot meet the minimum commitments larger vendors requirenot Sigstore
  • A marketplace wanting NFC passport chip reading for higher assurance without an enterprise contractnot Sigstore

Sigstore

  • Open source projects signing releases without running a certificate authoritynot iDenfy
  • Organisations meeting a signed-artifact requirement without buying a signing productnot iDenfy
  • Publishing provenance that a consumer can verify independently of younot iDenfy
  • Self-hosting the same components where a public log is unacceptablenot iDenfy

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

iDenfy

  • Rates are quoted rather than published on an accessible page, so despite the marketing emphasis on transparency you still need a sales conversation to get a number.
  • It is a smaller vendor than the market leaders, which makes it a harder sell through enterprise vendor-risk review even when the product performs well.
  • Human review on every case caps throughput in a way fully automated competitors are not constrained by, which shows up as latency during volume spikes.
  • Coverage and accuracy are strongest on European documents; performance on some Asian, African and Latin American document types trails specialists in those regions.
  • The bundled AML screening uses its chosen data sources, so institutions mandated to use a specific list provider such as Dow Jones cannot substitute it and end up paying twice.

Sigstore

  • The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
  • Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
  • Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
  • Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.

Pricing, plan by plan

iDenfy

On request
  • iDenfy Verification$undefined/verification
    • Volume-tiered per-verification rates quoted on request
    • AML screening bundled rather than charged per check
    • No monthly minimum advertised

Sigstore

Free
  • Public good instanceFree
    • Free to everyone with no contract
    • 99.5 percent availability objective, not an agreement
    • 100KB cap per attestation upload
  • Self-hostedFree
    • Apache-2.0
    • Run your own Fulcio and Rekor
    • Rekor v2 available for self-hosters

Which should you pick?

Choose iDenfy if

  • You need document verification.
  • You work on Web, iOS, Android, API.
  • You also want human review on all cases.
iDenfy review

Choose Sigstore if

  • You need fulcio.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows, Self-hosted.
  • You also want rekor.
Sigstore review

Questions people ask

Is iDenfy or Sigstore better?
Neither clearly leads. iDenfy starts at On request and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, iDenfy or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for iDenfy and Free for Sigstore.
Does iDenfy or Sigstore run on more platforms?
iDenfy runs on Web, iOS, Android, API. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Sigstore for free?
Yes. Sigstore has a free tier, so you can try it without paying. iDenfy starts at On request.
What is iDenfy best used for?
iDenfy is most often used for a european fintech that needs kyc and aml screening and wants one price rather than four line items, a gambling operator in a regulated eu market needing age and identity assurance with eu data processing, a crypto platform with modest volume that cannot meet the minimum commitments larger vendors require, a marketplace wanting nfc passport chip reading for higher assurance without an enterprise contract. Of those, a european fintech that needs kyc and aml screening and wants one price rather than four line items and a gambling operator in a regulated eu market needing age and identity assurance with eu data processing are not what Sigstore is typically brought in for.
What can iDenfy do that Sigstore cannot?
iDenfy covers Document verification, Human review on all cases, AML screening, Business verification. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

iDenfy: Is AML screening included in the verification price?

That is the pitch, screening bundled rather than sold as a per-check add-on. Confirm which sanctions and PEP data sources are behind it before you rely on it.

Sigstore: Is the public instance really free?

Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.

iDenfy: Is there a monthly minimum?

iDenfy markets itself as having no monthly minimum, in contrast to competitors charging $49 to $299 a month. Get that in writing in the contract.

Sigstore: Has the public log moved to Rekor v2?

No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.

iDenfy: Where is data processed?

iDenfy is established in Lithuania and processes in the EU, which simplifies GDPR transfer assessments compared with United States-headquartered vendors.

Sigstore: Does Sigstore make my dependencies safe?

No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.

Sigstore: What are the rate limits?

Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.

Sigstore: Should we self-host it?

If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.

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