Is my file uploaded to ProofLedger's servers?
No. Only the SHA-256 fingerprint ever leaves your device. Your file content is never transmitted.
Search our documentation, browse topics, or reach the support team directly.
Getting Started
Create your account, record your first piece of evidence, and understand how ProofLedger works.
Recording Evidence
How hashing works, what file types are supported, bulk recording, and retention settings.
Verification
Verifying files and Proof IDs on-chain, offline verification, and sharing verification links.
Certificates & Proofs
Certificate types, downloading, sharing, Ed25519 signatures, and legal admissibility.
Billing & Plans
Managing your subscription, upgrading plans, invoices, refund policy, and annual billing.
API & Integrations
Authentication, rate limits, webhooks, bulk endpoints, and SDK reference.
Is my file uploaded to ProofLedger's servers?
No. Only the SHA-256 fingerprint ever leaves your device. Your file content is never transmitted.
Can I verify a proof without a ProofLedger account?
Yes. The verify page is fully public. Anyone can verify a Proof ID or file fingerprint at any time.
Standard vs. Escalation certificates — what's the difference?
Both anchor your proof on-chain. Escalation includes a dual Bitcoin + Polygon anchor and a notarized cover letter.
How long does blockchain anchoring take?
Polygon anchoring completes within ~2 minutes. Bitcoin anchoring, included on Escalation, finalizes in 1–2 hours.
How to verify entirely offline with verify-proof
Use the open-source Python package to verify any proof directly against the public blockchain, with no ProofLedger dependency.
Getting started with the ProofLedger API
Authentication with API keys, your first recording request, and how to retrieve proof status via webhook.
Response times depend on your plan. Enterprise customers receive a dedicated account contact.
Establish a verifiable record of existence and timing, before disputes, claims, or incentives change everything.