Turn any online content into certified digital evidence with blockchain and ICP-Brasil timestamp. Legal validity accepted in courts across Brazil.
Trust validated by market leaders
With the rise of generative AI, Brazilian courts are increasingly strict. Screenshots, PDFs and recordings without digital certification are challenged and invalidated every day in legal proceedings.
Free tools and generative AI fabricate entire WhatsApp conversations, emails and documents indistinguishable from originals. If the opposing party presents a tampered version, how do you prove which one is real?
We agreed on $5,000 for the service
14:32Perfect, go ahead.
We never agreed on anything
14:32I don't recognize this.
No SHA-256 hash, no timestamp, no source IP, no chain of custody. To a judge, it's just an image file — and the opposing party only needs to claim it was fabricated by AI.
Deleted profiles, pages taken offline, revoked messages, stories that expire in 24h. By the time you realize you needed that evidence, it no longer exists. There is no second chance.
The opposing party challenged its authenticity and the judge demanded technical proof. No hash, no timestamp, no chain of custody — your screenshot was thrown out. Months of litigation lost over evidence that lacked certification.
Six layers of protection ensuring authenticity, integrity and legal validity across the entire national territory.
Each digital evidence is simultaneously registered in three blockchain networks — Polygon, Arbitrum, and Optimism — ensuring permanent and tamper-proof proof of existence.
Protection of digital evidence with AES-256 encryption, TLS 1.3 in transit and SHA-256 hash for integrity verification. Security equivalent to that used by financial institutions and government agencies.
Public faith timestamp as per law, according to RFC 3161, issued by a Certification Authority accredited by ITI. Incontestable date and time nationwide.
Technical processing in a secure and isolated environment. We guarantee evidence integrity from capture to storage.
Hosting on Amazon Web Services, world leader in cloud computing. Data centers in the sa-east-1 region in São Paulo guarantee latency under 25ms and total data sovereignty.
Each evidence generates a self-contained PDF/A-3 report with forensic metadata, integrity hash, timestamp, screenshot, original HTML, and complete chain of custody. A single document, ready for judicial presentation, without depending on external systems.
Forensic metadata
Integrity
Carimbo de tempo
Embedded attachments
Six layers of protection ensuring authenticity, integrity and legal validity across the entire national territory.
Each digital evidence is simultaneously registered in three blockchain networks — Polygon, Arbitrum, and Optimism — ensuring permanent and tamper-proof proof of existence.
Certifications recognized by the Brazilian Judiciary, based on the Marco Civil da Internet and CPC.
Protection of digital evidence with AES-256 encryption, TLS 1.3 in transit and SHA-256 hash for integrity verification.
Public faith timestamp as per law, according to RFC 3161, issued by a Certification Authority accredited by ITI.
Technical processing in a secure and isolated environment. We guarantee evidence integrity from capture to storage.
Hosting on Amazon Web Services, world leader in cloud computing. Data centers in the sa-east-1 region in São Paulo.
Each evidence generates a self-contained PDF/A-3 report with forensic metadata, integrity hash, timestamp, and complete chain of custody.
Forensic metadata
Embedded attachments
Defense in Depth
Each digital evidence goes through six layers of protection that operate independently. Even if one layer is compromised, the others guarantee the integrity and legal validity of the document.
Lexato-certified evidence is based on Brazilian legislation and accepted as proof in legal proceedings in all instances.
Each Lexato certification is based on current federal legislation, with blockchain registration and ICP-Brasil timestamp. Accepted as proof in legal proceedings in all instances.
All instances
Courts
3 federal laws
Legal basis
Blockchain + ICP-Brasil
Triple guarantee
Law No. 12.965/2014
Establishes principles for internet use in Brazil and recognizes electronic records as means of evidence.
Art. 369 and 411
Admits electronic documents as evidence, provided their authenticity and integrity are guaranteed.
Art. 158-A to 158-F
Defines the chain of custody and procedures for preserving digital evidence in criminal offenses.
ICP-Brasil
Establishes the Brazilian Public Key Infrastructure, granting legal validity to digital documents.
The admissibility of digital evidence depends on the analysis of the competent court in each specific case. Lexato provides the technical elements that support the authenticity and integrity of the evidence.
Unique technologies and functionalities in the Brazilian digital certification market.
Exclusive Lexato advantages:
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See Full ComparisonInformation based on public data collected in April 2025. Prices and features may vary. Please check the official websites for updated information. Lexato is not responsible for subsequent changes. Comparison conducted independently for informational purposes.
See how Lexato helped people and professionals protect their rights with certified digital evidence.
“I suffered workplace harassment and the messages were deleted from the group. But I had already certified everything with Lexato. I won the case and was compensated.”Lucas SilvaSão Paulo, SP
“I used to spend R$ 400 on notarial deeds for each case. With Lexato, I do it in seconds with the same legal validity. It changed our firm's routine.”Fernanda SantosSantos & Barros Lawyers
“My brand was copied by a competitor. I certified all the evidence from their website and won the intellectual property lawsuit.”Ricardo OliveiraOliveira Trademarks & Patents
“I received threats via messages and needed proof before they were deleted. In less than a minute I certified everything from my phone. The aggressor was identified.”Camila RochaCuritiba, PR
“I certify contracts and proposals sent by email. It has already prevented two disputes with clients who denied receiving the documents.”Marcos AlmeidaGrupo Almeida Construções
“Someone created a fake profile with my photos. I certified all the pages before they were taken down and identified the person responsible in court.”Juliana CostaPorto Alegre, RS
“In forensic analysis, chain of custody is everything. Lexato delivers SHA-256 hash, ICP-Brasil timestamp and blockchain in a single technical report.”Dr. André MendesMendes Forensic Consulting
“My ex posted edited private conversations to defame me. I certified the originals with Lexato and proved the tampering. I got a restraining order.”Patrícia LimaSalvador, BA
“Our e-commerce suffered a defamation campaign with fake reviews. We certified everything and got a court-ordered removal in 48 hours.”Thiago NascimentoNascimento Tech Ltd.
“A supplier changed the contract terms after signing and denied it. I had the original version certified. We resolved it without going to court.”Renata DuarteDuarte & Associates Consulting
“I record the state of client websites before each delivery. Never had another argument about what was or wasn't implemented. It's now routine.”Felipe CardosoFreelancer, Campinas, SP
“An offensive post against my client was deleted. But I had already certified the entire page with metadata and exact timestamp. Case won.”Dra. Marina VasconcelosVasconcelos, Braga & Lopes Lawyers
Everything you need to know about Lexato before you start.
Our technical team is ready to help you with any issue.