Capture happens in your hand. Seal happens before you put the phone down. Share happens with a single link. Verify happens in anyone’s browser. Read the long version, or jump straight to the part you came here for.
Photo, video, voice memo, text note, document, witness statement, or a full timestamped event. The moment it’s saved, your phone computes a SHA-256 fingerprint of every byte. That fingerprint becomes the seal.
Photo, video, voice memo, text note, screenshot, document. The format doesn’t matter — the hash works on bytes.
Add a witness with name, relationship, and a signed statement field. The witness becomes part of the same sealed capture.
Custody exchanges. Title IX intake. OSHA near-misses. Property condition logs. Pre-built so you don’t have to remember what your form needs.
The capture is encrypted at rest on your device with AES-256. The 32-byte fingerprint — nothing else — is forwarded through our servers to the OpenTimestamps calendar network, which anchors it into a Bitcoin block within hours.
When you save a capture, CaseGuardian creates a 32-byte SHA-256 fingerprint (a “hash”) of the file on your device and forwards only that hash to the public OpenTimestamps calendar network, which anchors it into the Bitcoin blockchain.
Your file, filename, case, identity, and IP address are never sent to the calendar operators. The hash is relayed through CaseGuardian’s own servers, so calendar operators see our server’s IP — never yours. The hash itself is a one-way fingerprint: it cannot be reversed into your photo, video, audio, or document, and it reveals nothing about the underlying content.
We retain the returned receipt in your account so you (or anyone you share a verification link with) can later prove the capture existed exactly as recorded, on the exact date and time recorded.
The blockchain is used solely as a public, tamper-proof ledger of fingerprints. No wallet, no purchase, no fees, no gas, no exchange account. CaseGuardian L.L.C. is not registered as a money service business and does not engage in cryptocurrency activity.
The Attorney Package is a single, branded, indexed, hyperlinked export your lawyer can drop into discovery without reformatting. The Share Link is the same thing, addressed to one specific person, with view-only mode, watermarking, expiry, and revocation under your control.
Phone number and email required on every recipient. A misplaced link alone is not enough to open the package.
Per share. View-only blocks right-click save, hides direct URLs behind short-lived tokens, and watermarks every page with the recipient’s name and access time.
Set a 24-hour link or one that lives until the matter closes. Revoke instantly. See a log of every time the link was opened, from where, on what device.
The public verification page is the proof side of the promise. Anyone can paste a fingerprint — or upload a CaseGuardian receipt — and confirm the Bitcoin anchor in their browser. No app install. No account. No trust placed in CaseGuardian.
Verification confirms the math. Not the meaning.
A green check confirms the hash matches a confirmed Bitcoin block. It does not authenticate who captured the file, prove the contents are truthful, or guarantee admissibility under any rules of evidence. That belongs to the court, the rules of evidence in your jurisdiction, and your lawyer.
The verification page shows four possible outcomes: Bitcoin-anchored (the result a judge wants to see), Awaiting Bitcoin block (queued for the next aggregation), Hash mismatch (the file has been modified after capture), and Unknown (no OpenTimestamps calendar has ever seen this hash). The verifier runs in your browser. No CaseGuardian server is in the loop.
Open the verification pageWhen you flip the “Parse with AI” toggle on a single capture — a bank statement, a transcript, a long voice memo — the AI gets what’s relevant to the case and nothing else. It does not see your name, your phone number, your email, your address, or the names of the people in your life. It looks for dates, amounts, events, and patterns. That’s the only reason it’s there.
Your evidence never trains a model. Never feeds an ad network. Never leaves your device until you personally review and approve it.
CaseGuardian is built on client-controlled encryption with AES-256 encryption at rest, TLS 1.3 in transit, and database-level Row-Level Security on every record. Authentication runs through Apple, Google, and hardened OIDC flows with multi-layer rate-limiting, replay-window protection, and biometric gating on every destructive action. Your encryption key stays on your device, so in normal operation we can’t read your case contents. The one exception we disclose plainly: when you open a share link, that page may be rendered through our servers.
We ship zero third-party trackers, zero ad SDKs, and zero IDFA collection — your evidence never trains a model, never feeds an ad network, and never leaves your device until you personally review and approve it.
Backed by GDPR / CCPA-compliant right-to-erasure, opt-in AI parsing, and auto-expiring share links, CaseGuardian is engineered to the same standard as the legal record it protects.
CaseGuardian is a record-keeping tool. If you are in immediate danger, call 911 (US/Canada), 112 (EU), or 999 (UK). The National Domestic Violence Hotline (U.S.) is 1-800-799-7233 or text START to 88788.
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