With Proof, the signer is checked against a government credential, matched to a live selfie, and assured at IAL2. Because a texted code confirms a phone, and the agreement needs a person.
Why teams switch to Proof
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How does Proof compare to Dropbox Sign?
Who carries the liability for authenticating a signer
Proof runs verification in front of the signature, with an Identity Report on every transaction. Dropbox Sign's Service Specific Terms place that work on the customer: for API and embedded signing, "Customer is solely responsible and liable for such authentication." For organizations signing agreements a regulator may pull, that liability belongs in the evaluation.
Scope is what an auditor reads
Kantara's registry names Proof's certified service, Identity Assured E-Sign, with its assurance level and expiry on record. Dropbox scopes its certificates to "Dropbox Standard, Advanced, Enterprise and Education," and states that Dropbox Sign does "not offer compliance support under 21 CFR Part 11 specific to electronic signatures." For organizations in regulated industries, credential scope is what gets examined.
Certifications that show up in audit reviews
IAL2 from Kantara, WebTrust audit certification, and AATL-compliant digital certificates are the credentials that appear in regulated industry audit reviews beyond SOC 2 and ISO 27001. Proof holds all three.
Frequently asked questions
Dropbox Sign is considerably cheaper. How do I justify the difference?
Dropbox Sign's pricing is transparent and the upfront savings are real. The justification for Proof shows up on the agreements where you would have to demonstrate who signed: loan documents, beneficiary designations, powers of attorney, account changes, anything a regulator or underwriter may pull. On Dropbox Sign, ID document verification arrives through eID, a paid add-on on the API Premium plan delivered through nine European identity schemes, one signer per request. Whether that covers your signers, and what a separate verification vendor costs if it doesn't, is the number to compare.
We only need a legally binding signature. Why pay for more?
Legal validity and evidentiary strength answer different questions. Dropbox Sign's eSignatures are binding under the ESIGN Act, as are Proof's, and both carry an audit trail. When a signature gets disputed, what carries the argument is the record of how the signer's identity was established, which is what Proof's Identity Report holds and why the verification behind it carries a third-party approval you can look up.
How do we get started?
Proof's EasyLinks are no-code. You configure a link in minutes and share it in your product, on your site, or in an email, and every click opens a new transaction. For deeper integration, the API is available on Premium and above. Proof's implementation team handles transitions from Dropbox Sign, including for teams currently building on the Dropbox Sign API.