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Government · head to head

Bidnet Direct vs Sigstore

Bidnet Direct logo

Bidnet Direct

Government

Regional bid notification network where agencies post free and suppliers pay for alerts

From
On request
Free plan
No
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Sigstore has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bidnet Direct suppliers pay for aggregation, not access: the same solicitations are generally published free on individual agency and state portals, so the subscription is only worth it if searching manually costs more than the fee.; 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: Bidnet Direct covers Regional purchasing groups, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bidnet Direct and Sigstore actually diverge.

Attributes where Bidnet Direct and Sigstore differ
AttributeBidnet DirectSigstore
Starting priceOn requestFree
Pricing modelquoteOpen source, public instance free to use
Free tierNoYes
PlatformsWebWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity

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

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 Bidnet Direct

  • Regional purchasing groups
  • Free agency publication
  • Supplier notification
  • Vendor registration
  • Bid document distribution
  • Award postings
  • Supplier diversity reporting

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.

Bidnet Direct

  • A small municipal purchasing department that needs competitive responses without building or paying for its own bid portalnot Sigstore
  • A contractor that wants notification of every relevant solicitation across a state rather than checking dozens of agency websitesnot Sigstore
  • A state cooperative wanting a single regional portal so suppliers register once for many agenciesnot Sigstore
  • An agency required to demonstrate outreach to certified diverse suppliers on every solicitationnot Sigstore

Sigstore

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

Where each one falls short

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

Bidnet Direct

  • Suppliers pay for aggregation, not access: the same solicitations are generally published free on individual agency and state portals, so the subscription is only worth it if searching manually costs more than the fee.
  • Supplier pricing is not published and varies by geography and category breadth, which makes it difficult for a small contractor to judge value before a sales conversation.
  • Category matching produces a high volume of irrelevant alerts for suppliers whose work does not map neatly onto procurement commodity codes, so the notification stream needs constant tuning.
  • Bidnet is now one brand inside SOVRA, which divested six business units in 2025 under new private equity ownership, so portfolio priorities can change independently of any individual product's customers.
  • For agencies it is a publication and notification network rather than a sourcing system: bid evaluation, scoring and contract management need a separate tool.

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

Bidnet Direct

On request
  • Supplier subscription$undefined/year
    • Matched opportunity notifications
    • Access to regional purchasing group solicitations
    • Priced by geographic and category coverage
  • Agency participation$undefined/year
    • Solicitation publication and vendor registry
    • Free or low cost to participating public agencies
    • Supplier diversity reporting

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 Bidnet Direct if

  • You need regional purchasing groups.
  • You also want free agency publication.
Bidnet Direct 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 Bidnet Direct or Sigstore better?
Neither clearly leads. Bidnet Direct 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, Bidnet Direct or Sigstore?
Sigstore has a free tier; the other does not. Paid plans start at On request for Bidnet Direct and Free for Sigstore.
Does Bidnet Direct or Sigstore run on more platforms?
Bidnet Direct runs on Web. 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. Bidnet Direct starts at On request.
What is Bidnet Direct best used for?
Bidnet Direct is most often used for a small municipal purchasing department that needs competitive responses without building or paying for its own bid portal, a contractor that wants notification of every relevant solicitation across a state rather than checking dozens of agency websites, a state cooperative wanting a single regional portal so suppliers register once for many agencies, an agency required to demonstrate outreach to certified diverse suppliers on every solicitation. Of those, a small municipal purchasing department that needs competitive responses without building or paying for its own bid portal and a contractor that wants notification of every relevant solicitation across a state rather than checking dozens of agency websites are not what Sigstore is typically brought in for.
What can Bidnet Direct do that Sigstore cannot?
Bidnet Direct covers Regional purchasing groups, Free agency publication, Supplier notification, Vendor registration. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Bidnet Direct: Do government agencies pay?

Generally not, or very little. The network is funded by supplier subscriptions, which is why agencies get an existing supplier pool without paying for 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.

Bidnet Direct: Is it worth it for a supplier?

Only if aggregation saves you more than it costs. The solicitations are public and available free elsewhere; you are buying alerting and search across many agencies at once.

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.

Bidnet Direct: Who owns it now?

SOVRA, the rebranded procurement business of mdf commerce, which was acquired by KKR. Bidnet Direct remains a named product within that portfolio.

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.

Bidnet Direct: Does it evaluate bids?

No. It publishes and distributes. Scoring, evaluation and contract management require a sourcing platform.

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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