Know Your Real Estate
Documents Are Untouched.
Forever.
ProofDeed creates tamper-proof proof that deeds, mortgages, and agreements existed at a specific time, secured by blockchain technology.
When Documents Change, Disputes Begin
Most real estate disputes come down to one question: "Was this document altered?" Traditional systems cannot prove what existed at a specific moment in time.
ProofDeed solves this by creating independent, tamper-proof proof that protects all parties in real estate transactions.
How It Works
Generate immutable proof for real estate documents in three simple steps.
Upload a Document
Upload a document. ProofDeed creates a unique digital fingerprint using SHA-256 cryptographic hashing.
Blockchain Timestamp
That fingerprint is timestamped on a public blockchain, creating permanent, tamper-proof proof.
Independent Verification
Anyone can later confirm the document hasn't been altered using the blockchain timestamp.
Important: ProofDeed never stores, views, or analyzes documents. Only the cryptographic fingerprint is recorded.
What is Cryptographic Hashing?
A cryptographic hash is like a unique digital fingerprint for your document. Even the smallest change—a single character, comma, or space—produces a completely different hash.
One-Way Process
The hash cannot be reversed to recreate your document, ensuring privacy
Tamper Detection
Any modification to the document produces a different hash instantly
Industry Standard
SHA-256 is used by banks, governments, and security systems worldwide
Blockchain Timestamped
When recorded on blockchain, the hash becomes permanent and verifiable
Property Deed - 123 Main St
a7f3c9d2e8b1f4a6c3d9e2f8b5a1c7d4e9f2a8b3c6d1e7f4a9b2c8d5e1f7a3c9Change Detection
If even one character changes, the entire hash becomes completely different
How ProofDeed Compares
Most document verification tools are built for everything.
ProofDeed is built specifically for real estate.
While other platforms offer generic file timestamping, ProofDeed focuses exclusively on deeds, mortgages, agreements, and lending documents — where timing, integrity, and clarity actually matter.
| Feature | ProofDeed | Generic Proof Platforms |
|---|---|---|
| Primary Focus | Real estate documents | All document types |
| Industry Specificity | Built for deeds, mortgages, agreements | Broad, non-specific |
| Document Storage | No storage | /Varies |
| Proof Report | Plain-English, human-readable | Often technical |
| Verification Clarity | Designed for audits & disputes | Less court-aware |
| Cryptographic Hashing | SHA-256 | |
| Blockchain Timestamp | Polygon (Ethereum-secured) | Varies |
| Cost Efficiency | Low, predictable | Often higher |
| Ease of Use | Non-technical users | Less tailored to property-related disputes |
ProofDeed
- Built exclusively for real estate and lending
- Generates tamper-proof digital fingerprints
- Anchors proof to blockchain timestamps
- Produces clear verification reports for third parties
- Never stores, views, or analyzes documents
Other Platforms
- Generic document focus
- Broader, less specialized use cases
- Less tailored to property-related disputes
ProofDeed is not document storage.
It is document certainty.
When the integrity of a real estate document matters, ProofDeed proves it.
How ProofDeed Compares
Traditional methods vs. blockchain-based cryptographic proof
Traditional Notary
- Legally recognized
- Requires physical presence
- Can be forged or lost
- No tamper detection
- Relies on notary records
Title Company
- Verifies ownership chain
- Provides insurance
- Expensive process
- Doesn't prove document integrity
- Centralized records
ProofDeed
- Instant verification
- Tamper-proof timestamps
- No document storage
- Independent verification
- Blockchain secured
Note: ProofDeed complements traditional services—it doesn't replace notaries or title companies. Use ProofDeed to add an additional layer of cryptographic proof to your real estate documents.
Verify Document
Verification allows anyone to confirm that a document has not changed since proof was created. Verification does not require access to the original document.
How Verification Works
Enter Document Hash or Transaction ID
Provide the cryptographic fingerprint from your proof report
Check Blockchain Record
ProofDeed queries the public blockchain for the timestamp
Confirm Integrity
Receive instant confirmation of when the document was timestamped
Verification will be available when ProofDeed launches
Why Cryptographic Proof Matters
In real estate disputes, proving a document hasn't been altered can mean the difference between winning and losing your case.
Without Cryptographic Proof
- No way to prove document hasn't been altered
- Disputes become "he said, she said" arguments
- Expensive forensic analysis may be required
- Vulnerable to fraud and manipulation
- Difficult to establish exact timing
With ProofDeed
- Mathematical proof of document integrity
- Blockchain timestamp proves exact date and time
- Independent verification by anyone, anytime
- Tamper-proof evidence for legal proceedings
- Permanent record that can't be altered or deleted
Legal Disputes
Provide irrefutable evidence that documents existed at a specific time and haven't been modified
Fraud Prevention
Detect any unauthorized changes to deeds, mortgages, or agreements immediately
Time-Stamped Proof
Establish exact timing for contracts, agreements, and property transfers
Why ProofDeed
ProofDeed provides certainty, not storage.
Built for Real Estate
Specifically designed for property deeds, mortgages, and real estate agreements.
No Document Storage
Zero custody risk. We never store, view, or retain your documents.
Ethereum-Secured
Uses low-cost, Ethereum-secured blockchain technology via Polygon network.
Human-Readable Reports
Clear, plain-English proof reports that anyone can understand.
Independent Verification
Tamper-proof verification that doesn't rely on ProofDeed's existence.
Immutable Timestamps
Permanent, unchangeable proof secured by blockchain technology.
Use Cases
When document integrity matters, ProofDeed proves it.
Property Deeds
Prove ownership documents remain unaltered
Mortgage Notes
Verify loan agreements and terms
Purchase Agreements
Secure real estate transaction contracts
Private Lending
Protect private loan documentation
Leases
Timestamp rental and lease agreements
Title Disputes
Provide evidence in legal proceedings
Your Proof, In Writing
Each proof includes a downloadable PDF with the document fingerprint, blockchain timestamp, transaction record, and plain-English verification instructions.
Document Fingerprint (SHA-256)
Unique cryptographic hash of your document
Blockchain Timestamp
Exact date and time recorded on blockchain
Transaction Record
Permanent blockchain transaction ID
Verification Instructions
Step-by-step guide for independent verification
Frequently Asked Questions
Everything you need to know about ProofDeed
Still have questions?
Contact UsCreate Proof in Minutes
Pay per document. Bulk and enterprise options available. API access for partners.
Security & Trust
Security Features
No Document Storage
Documents are never uploaded, stored, viewed, or analyzed
SHA-256 Cryptographic Hashing
Industry-standard cryptographic fingerprinting used by banks and governments
Immutable Blockchain Timestamp
Permanent records on Polygon blockchain (Ethereum-secured)
Independent Third-Party Verification
Anyone can verify without relying on ProofDeed
Designed for Audits and Disputes
Court-aware verification and plain-English proof reports
Legal Disclaimer
ProofDeed provides cryptographic proof of document integrity and timestamping only. ProofDeed does not store documents and does not provide legal advice.
The service creates verifiable evidence that a document existed at a specific time and has not been altered. Users should consult with legal professionals regarding the admissibility and interpretation of blockchain evidence in their jurisdiction.
ProofDeed is operated by a United States company, ensuring compliance with U.S. regulations and standards.