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ZOREAL

ZOREAL Mark

Alternatives to ProofMode

ProofMode describes itself as media and reality, verified: a free and open-source camera app with built-in provenance and authentication for chain of custody, which signs each photo or video with an OpenPGP key generated in the app, records sensor data, adds optional OpenTimestamps and Google SafetyNet receipts, and is C2PA conformant in its 3.x releases. ZOREAL Mark is a signed marker a holder pastes into a post or comment so that anyone can check that a real human, verified by ZOREAL, vouched for exactly that text on that page at that time. This page sets an anonymous capture-integrity tool beside a verified-human vouching tool: what each signs, who is named, what third-party evidence each carries, and how a reader checks it.

Information last reviewed 10 September 2026. Compared: ProofMode Capture and Verify, as published on proofmode.org and GitHub, against ZOREAL Mark; ProofMode’s Identify, Connect and Enhance products and its commercial developer services are out of scope.

See ZOREAL Mark
Seven other alternatives

Where ZOREAL Mark and ProofMode differ

  • One of a kind

    ZOREAL Mark is one of a kind: the only product of its kind, and the leading product in the market.

  • A verified human, or a key

    ProofMode generates an OpenPGP keypair inside the app as its proof identity and states that it does not require a persistent identity or account; its verify page notes that the key is not certified with a trusted signature. A ZOREAL Mark is signed under a certificate issued after ZOREAL verified the person against a government document and its chip, the face and a liveness capture, and names a per-site persona or the legal name verified against their passport.

  • Text, or media at capture

    ProofMode’s object is a photo or video at the moment of capture, hashed with SHA-256 and signed with the in-app key, with sensor and device data written to a signed proof file. A Mark’s object is text pasted into any text box on any site, with the hash of the text bound to the page URL at the time of signing.

  • Where the timestamp comes from

    ProofMode adds optional notarisation receipts from third parties: an OpenTimestamps file and a Google SafetyNet token. ZOREAL countersigns each Mark with a presence attestation and writes an immutable public record holding the hash, the URL, the identity mode, the timestamp and the signatures.

Side by side

Comparison of ZOREAL Mark and ProofMode, from public materials reviewed on 10 September 2026.

AttributeZOREAL MarkProofMode
What is provenA Mark asserts exactly four things: a human verified by ZOREAL vouched for this text; a live human was present when it was signed, at the stated grade (recent or live); it was signed for this page; and it was signed at this time. It does not assert that the human wrote the text, that the text is true, that the persona is one person across sites, that the person consented freely, or anything about the platform account that posted it. The holder chooses, per signature, which identity signs: the platform persona ("A verified human", a pseudonym derived per site, the same on every page of that site and unrelated to any other site), the legal name ("[Legal Name], verified against their passport"), or, for a company, the organisation (a verified legal person signs as itself, activated by one of its authorised people, who is recorded in the organisation’s own audit log and never published).That the media file is unchanged since it was signed by a key held in this app, with sensor data from the moment of capture and, optionally, an OpenTimestamps receipt and a Google SafetyNet device-integrity token. The key is anonymous; who held it is not asserted.
What is signedText. The extension canonicalises the text and normalises the page URL, the holder approves on the phone, and the public record binds the hash of the text to that page URL at that time. The Mark is two markers and a short id pasted into any text box, and the platform has to preserve the markers, nothing more.Photos and video at capture: the file is hashed (SHA-256) and signed with the in-app OpenPGP key, and sensor and device data are written to a signed proof CSV.
Who the mark namesA mark can stand as vouched for by a verified human, carry your name, or carry your role: a president, a principal of a government agency, whatever you are.No one, by design: the app generates an OpenPGP keypair as a persistent proof identity, does "not require a persistent identity or account generation", and the verify page notes "This key is not certified with a trusted signature".
Third-party evidenceZOREAL countersigns with a presence attestation and writes an immutable public record holding the hash, the URL, the identity mode, the timestamp and the signatures; records are immutable and cacheable.Optional notarisation receipts: OpenTimestamps (".OTS file") and Google SafetyNet (".GST file", "a Javascript Web Token signature from Google SafetyNet notarization").
Reader verificationBy anyone, without an account: the browser extension, the public record, or the open-source verifier library against two pinned ZOREAL roots; a moved Mark reads "Verified for another page", an altered one "Not verified"ProofMode’s ProofCheck, any C2PA validator such as CAI Verify and C2PA.sh from SSL.com, or GPG and a hash check by hand; no platform participation.
PricingIt is free to mark content and free to verify a mark. Signing and verifying are free and unlimited on every plan, with no quota: "Sign and verify with ZOREAL Mark: Free, unlimited" on Free and Premium. The pricing page lists Mark as "Coming soon" and says "ZOREAL Mark will be free and unlimited for signing and verifying when it launches." Current prices are on the ZOREAL price list at zoreal.com/pricing.Free: the iOS app is listed as Free with no in-app purchases (US App Store), and the Android app and the Verify tool are "Free and open-source" under GPL-3.0. Commercial integration support and custom source licences are "Contact For Pricing" as of September 2026.
Where it worksMark is platform independent. Any type of content can be marked, on any site.iOS ("iPhone, iPad, and Apple Silicon devices"), Android ("Pixel, Galaxy, etc"), F-Droid, GitHub beta releases and TestFlight, with open-source SDKs for adding ProofMode capabilities and C2PA support.
Certifications and standardsA verifier checks the signature, the attestation, the chain to ZOREAL’s pinned roots, the timestamp and the text hash, with ZOREAL’s roots compiled into the open-source library. Organization-level, as zoreal.com lists them for Bynn Intelligence, Inc.: SOC 2 (attestation), PCI DSS (SAQ A), GDPR (data protection), ISO/IEC 27001:2022 (information security certification) and CSA STAR Level One (cloud security self-assessment). No Mark-specific certification is stated on zoreal.com as of September 2026, and no surface describes a Mark as a qualified or certified signature.C2PA 2.3: "ProofMode 3.x is now fully C2PA conformant" and "Proofmode Android has passed the C2PA Conformance Process" (8 May 2026); OpenPGP, OpenTimestamps and Google SafetyNet. No ISO or SOC 2 statement in the pages we read.

Third-party details on this page reflect what each provider publicly stated on the review date shown above and may have changed since. Where a provider does not state something publicly, this page says so rather than assuming. Statements about what ProofMode offers reflect its public materials on the review date; absence of a feature from those materials does not mean it is unavailable. ZOREAL's current prices are on the ZOREAL price list.

Where ZOREAL Mark and ProofMode agree

Both are free to use and free to verify, and both publish what a verifier must check. ProofMode’s apps and SDKs are open source under GPL-3.0 and its verify page walks through the hash, the PGP signature and the receipts; ZOREAL’s verifier library is open source on npm with ZOREAL’s roots compiled in and conformance fixtures, and the extension, the public record and the library all verify without an account.

Both add evidence from outside the signer’s own device. ProofMode’s OpenTimestamps and SafetyNet receipts come from third parties; a Mark is countersigned by ZOREAL with a presence attestation and recorded with a timestamp in an immutable public record.

Both state their limits plainly. ProofMode’s key is anonymous by design and its verify page says so; a Mark does not assert that the human wrote the text or that it is true. Neither claims to establish more than what was signed.

ZOREAL Mark may fit you if

  • You want a verified human behind the signature, as a per-site persona or a legal name, with a presence grade per signature
  • You want to stand behind text on a page rather than a captured file, with the page URL in the record
  • You want a countersignature and an immutable public record from a named operator
  • You want to verify in the browser through an extension, the public record or an npm library

ProofMode may fit you if

  • You document events and need capture-time sensor evidence that stays anonymous
  • You want fully open-source apps and SDKs under GPL-3.0 that you can audit or fork
  • You need C2PA-conformant output from a free camera app
  • You want notarisation receipts from OpenTimestamps and Google SafetyNet

Other alternatives to ProofMode

7 more vendors compared under ZOREAL Mark, from their own public materials.

All 8 Mark comparisons

Common questions

How we compared

This comparison is based on publicly available information from ProofMode’s official website, documentation, pricing and published materials, and on ZOREAL’s own published product pages and pricing, as reviewed on 10 September 2026. Features, pricing and availability may change at any time. Verify current details directly with each provider before deciding.

Nothing on this page is legal advice. Which electronic signature method satisfies which law, what level of identity assurance a regulation requires, and whether a content signature or provenance mark meets a given standard all depend on the jurisdiction and the regulator’s guidance. ZOREAL Sign asserts no legal effect for the signatures it records. Confirm your obligations with qualified counsel before choosing a method.

Sources

ZOREAL is operated by Bynn Intelligence, Inc. and is not affiliated with, sponsored by, or endorsed by ProofMode. Third-party names and trademarks are the property of their respective owners and are used only to identify the products being compared.

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A product walkthrough, pricing or volume terms, with the ZOREAL team.

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