Who needs a seal? Almost everyone who issues a file.
Let's Seal proves any file is authentic, unaltered, from a known issuer, and existed at a point in time — verifiable by anyone, for free. Here's how that lands in your sector, step by step, in the app and from the CLI.
Whatever you issue, there’s a seal for it
Find your sector
Each guide walks the sector through sealing and verifying its own documents — with a workflow diagram, the web-app and CLI steps, and a live proof. More arrive every week.
Law & legal
Solicitors, barristers, in-house counsel, paralegals, and eDiscovery teams
- Contracts & deeds
- Legal opinions
- Engagement letters
- Wills
Insurance
Insurers, brokers, MGAs, loss adjusters, and surveyors
- Policy documents
- Certificates of insurance
- Claims paperwork
- Loss-adjuster reports
Software supply chain
Dev teams, DevOps, platform and security engineers
- Build artifacts
- Container images
- SBOMs (SPDX / CycloneDX)
- Release binaries
Compliance & audit
Compliance, risk, quality, and audit teams
- Audit trails
- Evidence records
- SOC / ISO evidence
- Data-integrity records (ALCOA+)
Intellectual property
Patent & IP attorneys, inventors, R&D teams
- Invention disclosures
- Prior-art records
- Trade-secret proof
- Design files
Banking & lending
Banks, lenders, fintechs, building societies
- Statements
- Loan & mortgage agreements
- KYC documents
- Letters of credit
Accounting & audit
Accountants, auditors, tax advisers, bookkeepers
- Financial statements
- Audit reports
- Tax returns
- Management accounts
Investment & asset management
Fund managers, wealth managers, IFAs, custodians
- Factsheets & KIIDs
- Prospectuses
- Investor statements
- Capital-call notices
Construction & engineering
Contractors, architects, structural & civil engineers
- Building certificates
- Structural calculations
- Inspection reports
- As-built drawings
Surveying & property reports
Chartered surveyors, valuers, EPC assessors
- Valuation reports
- Homebuyer surveys
- EPCs
- Party-wall awards
Property & conveyancing
Conveyancers, estate & letting agents, developers
- Title documents
- Transfer deeds (TR1)
- Leases & tenancy agreements
- Inventories
Healthcare
Hospitals, GPs, clinics, dentists, vets
- Medical records
- Discharge summaries
- Referral letters
- Fit notes
Pharma & life sciences
Pharma, CROs, clinical trials, medical devices
- Batch records
- Certificates of analysis
- Trial data
- GMP documents
Education & credentials
Universities, colleges, awarding & professional bodies
- Degree certificates
- Transcripts
- Diplomas
- Enrolment letters
Government & public sector
Councils, agencies, regulators, courts, registrars
- Permits & licences
- Planning permissions
- Benefit & tax letters
- Court orders
HR & corporate
HR teams, company secretaries, boards, startups
- Employment contracts
- Offer & reference letters
- Payslips & P60s
- Board minutes
Procurement & supply chain
Buyers, suppliers, tender teams, trade finance
- Purchase orders
- Contracts & NDAs
- Tender submissions
- Invoices
Manufacturing & trade
Manufacturers, logistics, food & agri, automotive
- Certificates of conformity
- Mill / material certs
- Test reports
- Bills of lading
Media, journalism & creative
Photographers, newsrooms, publishers, artists, film
- Photos & video
- Published articles
- Master files
- Brand assets
Individuals & freelancers
Anyone with a file worth proving
- Personal agreements
- Creative work
- Important documents
- Photos / video
Ten reasons anyone seals a file
Every guide above is some combination of these jobs — delivered in the file’s own native format.
Prove authenticity & integrity
Show a document is genuine and hasn't been altered since issue — the anti-forgery, anti-tamper case.
Timestamp — prove it existed
Prove a file existed by a certain date: prior art, priority, deadlines, “I had this first”.
Prove authorship & provenance
Show who created or issued a work — for IP, attribution, and anti-plagiarism.
Bulk-issue verifiable documents
Seal thousands of statements, certificates, or invoices automatically inside an existing workflow.
Media provenance vs. deepfakes
Content Credentials on photos and video: this is real, this is who shot it, this is unedited.
Evidence & chain of custody
Forensic files, disclosure, incident records — provably unchanged from collection onward.
Software supply-chain integrity
Sign build artifacts, containers, and SBOMs; prove a release is genuine and untampered.
Verifiable credentials
Degrees, licences, memberships, and certificates anyone can check without phoning the issuer.
Long-term archival integrity
Records that must stay provable for years — the seal and Bitcoin anchor outlive any single vendor.
Regulatory & compliance evidence
Audit trails, data integrity, retention — provable, timestamped, and independently checkable.
Anyone issuing documents at volume
The biggest lane: organisations that already generate statements, certificates, policies, invoices, and reports. Sealing drops into the existing pipeline — API, CLI, or a watched folder — so every file leaves already sealed, timestamped, and carrying a proof link. The recipient gets a normal document that also verifies.