INDEPENDENT TECHNICAL WITNESS

BlockMyData

BlockMyData — a technical witness for the integrity of your records.

A technical witness for your critical records.

Register critical data and preserve an independent integrity proof. Later, your company, customers or auditors can verify whether the content presented matches what was originally registered.

Verify a record

Free developer plan · REST API integration · No cryptocurrency

Independent Technical WitnessImmutable Chain of CustodyPublic Verification without AccountPDF Reports with QR Code

INTEGRITY PIPELINEDEMO / 001

01 / RECORDYour company sends the record.

JSON

POST /records
{ "event": "PAYMENT", "amount": 1000 }

02 / PROVEBlockMyData creates technical proof.

SHA-256

8a3f9c2e···71b06d4a

03 / LEDGER PROOFIndependent reference anchored.

LEDGER

VERIFIEDThird parties can verify anytime.

PROOF CREATEDBlockMyData — a technical witness for the integrity of your records.

BlockMyData — a technical witness for the integrity of your records.Independent Technical WitnessImmutable Chain of CustodyPublic Verification without AccountPDF Reports with QR Code

Built for supply chain, logistics, fintech, SaaS, compliance, government, legal, healthcare, IoT, and audits.

Supply Chain & TraceabilityAudits & Regulatory ComplianceFinancial TransactionsDigital Documents & ContractsCritical Logs & CybersecurityArtificial Intelligence & IoT

WHAT IS A TECHNICAL WITNESS

What does it mean to have BlockMyData as a technical witness?

BlockMyData does not decide if original information is true. It registers an independent proof of the content presented at a specific point in time and allows verifying later whether that content still matches the registered proof.

Your operational database stores day-to-day transactions. But when audits or disputes arise, who proves that the record was not altered afterwards?

BlockMyData acts as an independent technical witness: computing an exact cryptographic fingerprint at the moment of submission and anchoring an immutable ledger reference.

Your company keeps full control of its operational data. We preserve independent technical proof so that any authorized third party can verify exact correspondence at any time.

Important: Integrity ≠ Factual Truth
BlockMyData verification confirms correspondence with a previously registered proof. It does not, by itself, confirm the original factual truth of the information.

Your Company / DatabaseOperational data and processes

BlockMyDataBlockMyData Technical Witness

SIMPLE TO INTEGRATE. EASY TO VERIFY.

Your company records. We preserve the proof. Third parties can verify.

The complexity of cryptography and immutable anchoring stays behind a clean, simple REST API.

1. YOUR COMPANY RECORDS

Send documents, transactions, logs, or critical records via the interface or REST API.

POST /api/v1/ledgers/:slug/records

2. BLOCKMYDATA WITNESSES

We generate an independent cryptographic proof anchored to the record, creating a verifiable integrity reference.

CANONICAL JSON → SHA-256 → LEDGER PROOF

3. THIRD PARTIES VERIFY

Customers, partners, auditors, or authorized systems can later verify whether the content matches the original record.

✓ 100% VERIFIED · SIGNED PDF REPORT WITH QR CODE

Your Company Records→REST API→Canonical JSON→SHA-256 & Hash Chaining→Independent Technical Proof→Immutable Reference→Third Parties Verify

Immediately available for sandbox testing via Dashboard & API

NEW CAPABILITY: TRACKED ITEMS

We don't just witness a single state. We preserve a verifiable chain of events.

When a record represents an item with a lifecycle, every relevant change can generate a new proof linked to the previous history.

Genesis #1

Item Genesis (REGISTER)

Initial registration with unique external key, custom metadata payload, initial location, and first responsible custodian.

Hn → Hn-1

Cryptographic Hash Chaining

Each subsequent event (MOVE, UPDATE, REVOKE) computes its hash from the previous event hash (Hn = SHA256(Hn-1 + data)), ensuring sequence integrity cannot be broken.

Real-Time Audit

Real-Time Location & Custody

Know exactly who held responsibility and where the asset was located at every single second.

100% Verifiable

Interactive Forensic Timeline

Visual timeline drawer with automated cryptographic verification against the Ledger Provider on demand.

CARGO-2026-X88 · LOTE ATIVO

100% VERIFICADO

REGISTERGenesis Registration10:00:00 UTC

Origin: Main Factory

Production Operator

Elo Criptográfico:Genesis (H1): 7a9f1b2c... Prova Válida

MOVEDispatch & Transit14:30:15 UTC

In Transit: Interstate Route 42

Carrier Logistics (Truck 04)

Elo Criptográfico:H2 = SHA256(H1 + Payload) Prova Válida

MOVEDelivery at Distribution Center18:45:00 UTC

Regional Hub Warehouse

Warehouse Supervisor

Elo Criptográfico:H3 = SHA256(H2 + Payload) Prova Válida

NEW CAPABILITY: REPORTS & EXPORT

Cryptographic Validation Reports & Secure Data Export

Provide mathematical proof to external auditors, regulatory agencies, or enterprise customers with certified reports and safe streaming exports.

Laudo Formal PDF + QR Code

Cryptographic Validation Report (PDF + QR Code)

Formal deterministic audit at an exact cutoff timestamp (T). The system verifies every record, calculates a master Snapshot Hash, anchors it to the ledger, and renders a signed PDF report.

Deterministic Snapshot Hash of the Ledger state at cutoff T
Anchored with immutable Transaction ID on the Ledger Provider
Signed formal PDF report with forensic record sampling table
Embedded QR Code linking to online public verification page

REP-202609-00001STATUS: VERIFIED

Snapshot Hash:f134d44b0b9ed92ae6d4e4e8cfce87e1...

Streaming O(1) Memory

High-Scale Streaming Data Export (CSV & JSON)

Export millions of records or events with O(1) streaming memory, SHA-256 integrity checksum, and built-in security shields.

Native CSV Formula Injection protection (sanitizes =, +, -, @, \t, \r)
Export in clean sanitized CSV or full structured JSON format
Date range filtering and granular field selection
Package-level SHA-256 integrity checksum in manifest

CSV Sanitizado (Anti-Formula Injection: '=SUM...' → '\'=SUM...')

JSON Streaming Estruturado com Manifesto SHA-256

TEST THE DIFFERENCE

What if someone changes the database?

Your database might display tampered data. BlockMyData recalculates the cryptographic proof and immediately detects tampering.

INTERACTIVE DEMO

Your database can change. The cryptographic proof doesn't.

01 / ORIGINAL RECORD

{

"amount": $1,000

}

ORIGINAL SHA-256Calculando…

REFERENCE PROOFCalculando…

Calculating...Calculating...

02 / SIMULATE A CHANGE

{

"amount":

}

CURRENT RECORD SHA-256Calculando…

REFERENCE PROOF · REMAINS UNALTEREDCalculando…

Calculating...

SHA-256 is calculated directly in your browser in real time.

01 Original record preserved02 Tampering detected instantly03 Reproducible mathematical comparison

WHERE INTEGRITY MATTERS

What do you need to prove with absolute certainty?

For enterprises, public institutions, supply chain operators, and teams that must demonstrate their data and custody remained intact.

Supply Chain & Traceability

Track the chain of custody for shipments, pharmaceutical batches, or goods with cryptographic proofs.

Audits & Regulatory Compliance

Generate certified PDF audit reports with QR Code to prove compliance to external auditors.

Financial Transactions

Ensure monetary figures, payment accounts, and accounting logs were never altered retroactively.

Digital Documents & Contracts

Maintain mathematical evidence of electronic signatures, agreements, and official records.

Critical Logs & Cybersecurity

Protect user activity and security audit trails against unauthorized tampering or log clearing.

Artificial Intelligence & IoT

Create immutable integrity references for automated decisions made by AI agents and IoT devices.

Built for supply chain, logistics, fintech, SaaS, compliance, government, legal, healthcare, IoT, and audits.

LESS COMPLEXITY. MORE CONTROL.

One complete REST API. Verifiable proofs in minutes.

Add cryptographic integrity and provenance tracking to your existing systems with zero friction.

REST API with flexible JSON payloads
API keys, multi-tenant isolation, and idempotency
Streaming export and PDF audit reports via API
Dynamic JSON schemas for strict payload validation

curl -X POST \
  https://api.blockmydata.com/api/v1/ledgers/supply-chain/items \
  -H "Content-Type: application/json" \
  -H "X-API-Key: bmd_live_xxxxx" \
  -H "Idempotency-Key: reg-item-001" \
  -d '{
    "externalKey": "CARGO-2026-X88",
    "currentLocation": "Porto de Santos - Terminal 3",
    "currentCustodian": "Operador Logístico Alfa",
    "payload": {
      "temperature": "-18.5C",
      "sealNumber": "SEAL-998822"
    }
  }'

PUBLIC THIRD-PARTY VERIFICATION

Received a record from a company using BlockMyData? Verify the proof without creating an account.

Clients, partners, and auditors do not need an account, API key, or blockchain knowledge. You can verify integrity using the received content itself.

Public Access

VERIFY BY CONTENT

Paste the received JSON or document. BlockMyData recalculates the proof and compares it with the original record.

Public Access

PDF REPORT WITH QR CODE

Formal signed report with deterministic Snapshot Hash and embedded QR Code for instant online check.

Public Access

API VERIFICATION

Partner and auditor systems can programmatically verify records via public endpoints.

Reverse verification directly from content:Received JSON→SHA-256 Proof Calculation→Comparison with Register→VERIFIED / FAILED

Instant Public Verification

BlockMyData verification confirms correspondence with a previously registered technical proof. It does not, by itself, validate the original factual truth of the information.

SECURITY ARCHITECTURE

Separation of concerns and independent proofs.

Your system maintains operational data. BlockMyData maintains an independent proof to enable detection of subsequent discrepancies.

Mathematical proofs attest to the existence and temporal integrity of registered data.

CANONICAL JSON + SHA-256

Deterministic payload canonicalization with unique digital fingerprints.

Native

SEQUENTIAL HASH CHAINING

Cryptographic link where each subsequent event references the previous hash.

Native in Tracking

IMMUTABLE LEDGER (BLOCKCHAIN)

Proof anchoring in Hyperledger Fabric permissioned networks and immutable ledgers.

Native

MULTI-TENANT ISOLATION

Strict data, API key, and credential isolation per organization.

Native

CSV INJECTION SHIELD

Automatic formula character escaping on exports to protect operator environments.

Native

AUDIT LOG TRAIL

Full activity tracking and security logs with granular RBAC and MFA.

Native

TRANSPARENT PRICING

Start for free. Scale as your operation expands.

Flexible tiers for development, production, supply chain, and critical enterprise operations.

International pricing · USD · Online payment is not available yet

Proposed features and limits for each plan. Confirm availability and scope with our sales team before subscribing.

Developer

For development, testing, and prototyping.

$0/month

Free for development

1 Ledger (Generic or Tracked Items)
Up to 5,000 records & events/month
1 user and 1 API key
REST API and public verification
Data exports in CSV / JSON
Cryptographic validation reports with QR Code
Developer documentation

Pro

For production applications and supply chain.

$79/month

Paid plans are arranged with our sales team

Up to 10 Ledgers (Generic and Tracked Items)
Up to 100,000 records & events/month
Up to 10 users with access control
Multiple API keys & tenant isolation
Chain of custody and forensic timeline
Signed cryptographic PDF audit reports
Streaming export with CSV formula protection
Standard support

Business

For critical operations and strict compliance.

$299/month

Paid plans are arranged with our sales team

Up to 50 customizable Ledgers
Up to 750,000 records & events/month
Up to 50 users with advanced RBAC & MFA
Dynamic JSON schemas for items and events
Temporal snapshot audit & cryptographic proofs
Data export
Priority support & technical onboarding
Webhooks Planned

Enterprise

For high volumes and dedicated infrastructure.

From $999/month

Final pricing depends on volume, infrastructure and support requirements.

Custom record volume and users
Hyperledger Fabric or dedicated nodes
Contracted SLA
Custom integration options
Multi-party network with external participants
Custom integration & data architecture guidance
Enterprise onboarding and priority support
Assisted forensic audit reviews

Prices in USD. Taxes may apply. Enterprise pricing depends on volume, infrastructure and support requirements.

PILOT PROJECT / UP TO 90 DAYS

BlockMyData Pilot

Validate BlockMyData in a real business process before committing to a full deployment.

From $1,500Customized scope for your enterprise

Ledger & Schema Modeling
API and dashboard integration support
Traceability & Custody Testing
Validation Report Issuance
Forensic Tampering Simulations
Technical Guidance & Training

WHY AN INDEPENDENT TECHNICAL WITNESS?

Why not just save the hash in your existing database?

If the same administrator or compromised credential can alter both data and hashes in your database, forensic proof is compromised.

Critical Dimension	Traditional Database Alone	BLOCKMYDATA · Technical Witness
Storage	Stores mutable operational data	Complements your database with immutable proof
Administrative Control	Admins can edit records and logs	Proof mathematically anchored on the Ledger
Chain of Custody	Historical events can be rewritten	Tamper-proof sequential Hash Chaining
External Auditing	Requires blind trust in internal IT	Signed PDF audit reports with verification QR Code
Secure Exporting	Risk of CSV formula injection	O(1) memory streaming with formula sanitization
Public Verification	Requires exposing database access	Isolated public verification URL with instant proofs

An independent technical proof ensures no retroactive change goes undetected.

Cryptographic Integrity

Detect any tampering or divergence instantly with SHA-256.

Traceability & Custody

Track lifecycles and custodian handoffs with sequential Hash Chaining.

Independent Verification

Enable third parties to verify proofs without needing an account or API Key.

Formal Auditability

Generate QR-coded PDF audit reports and export injection-shielded datasets.

FREQUENTLY ASKED QUESTIONS

Everything you need to know about BlockMyData.

Straight answers on architecture, integration, integrity, and compliance.

Does BlockMyData replace my existing database?

No. Your current database (PostgreSQL, MySQL, Oracle, MongoDB, etc.) continues handling daily operations. BlockMyData acts as an independent technical witness, preserving integrity proofs for critical records.

Does BlockMyData attest that information is true in the real world?

No. BlockMyData acts as a technical witness of cryptographic integrity and record correspondence. It does not validate the original real-world factual truth, but mathematically proves that the content presented has not suffered any modification since registration.

Do third parties need an account or API key to verify a record?

No. Any client, partner, or auditor can visit the public /verify page or scan a report QR Code to verify technical proof using the content itself, without creating an account or needing API keys.

How do Tracked Items Ledgers work?

In a Tracked Items Ledger, every item has a genesis event (REGISTER) and subsequent custody, movement, or metadata updates. Each event hashes the previous event hash (Hn = SHA-256(Hn-1 + payload)), creating an unbreakable chain of custody.

What are Cryptographic Validation Reports in PDF?

They are certified audit reports generated at a deterministic cutoff timestamp (T). The system verifies all records, computes a master Snapshot Hash, registers it on the ledger, and renders a signed PDF with an embedded QR Code linking to online public verification.

How does data export prevent CSV Injection attacks?

When exporting records to CSV, fields starting with spreadsheet formula triggers (=, +, -, @, \t, \r) are automatically prefixed with a single quote ('), preventing spreadsheet macro execution.

Does BlockMyData use cryptocurrency or volatile tokens?

No. BlockMyData uses enterprise distributed ledger technologies (such as Hyperledger Fabric) and deterministic cryptography without any cryptocurrencies or tokens.

What happens if someone modifies data directly in the database?

Tampering is flagged immediately. Because the original cryptographic proof and immutable transaction ID remain anchored in the Ledger Provider, any recomputation detects the mismatch and outputs "INTEGRITY CHECK FAILED".

YOUR RECORDS DESERVE AN INDEPENDENT PROOF.

A year from now, will your team be able to prove your records and custody weren't changed?

Preserve independent technical proofs, track assets, and allow third-party verification with BlockMyData.

Try interactive demo

BlockMyData · BlockMyData — a technical witness for the integrity of your records.

LET’S TALK

A layer of trust for your project.

Tell us how your company plans to use BlockMyData. We’ll understand your needs and help with the next steps.

Share only what we need to start a conversation. Do not include passwords, API keys or sensitive data.

A technical witness for your critical records.

What does it mean to have BlockMyData as a technical witness?

Your company records. We preserve the proof. Third parties can verify.

1. YOUR COMPANY RECORDS

2. BLOCKMYDATA WITNESSES

3. THIRD PARTIES VERIFY

We don't just witness a single state. We preserve a verifiable chain of events.

Item Genesis (REGISTER)

Cryptographic Hash Chaining

Real-Time Location & Custody

Interactive Forensic Timeline

Cryptographic Validation Reports & Secure Data Export

Cryptographic Validation Report (PDF + QR Code)

High-Scale Streaming Data Export (CSV & JSON)

What if someone changes the database?

What do you need to prove with absolute certainty?

Supply Chain & Traceability

Audits & Regulatory Compliance

Financial Transactions

Digital Documents & Contracts

Critical Logs & Cybersecurity

Artificial Intelligence & IoT

One complete REST API. Verifiable proofs in minutes.

Received a record from a company using BlockMyData? Verify the proof without creating an account.

VERIFY BY CONTENT

PDF REPORT WITH QR CODE

API VERIFICATION

Separation of concerns and independent proofs.

CANONICAL JSON + SHA-256

SEQUENTIAL HASH CHAINING

IMMUTABLE LEDGER (BLOCKCHAIN)

MULTI-TENANT ISOLATION

CSV INJECTION SHIELD

AUDIT LOG TRAIL

Start for free. Scale as your operation expands.

Developer

Pro

Business

Enterprise

BlockMyData Pilot

Why not just save the hash in your existing database?

Cryptographic Integrity

Traceability & Custody

Independent Verification

Formal Auditability

Everything you need to know about BlockMyData.

A year from now, will your team be able to prove your records and custody weren't changed?

A layer of trust for your project.

Talk to our team