Cap Masa Digital PDF
Tambah cap masa digital yang dipercayai pada dokumen PDF untuk pengesahan undang-undang.
Upload PDF for TSA Timestamp
About This Tool
Timestamp PDF adds RFC 3161 compliant trusted timestamps to your PDF documents using external Time Stamping Authorities (TSA). It provides legally-binding mathematical proof that a document existed in a specific, unaltered state at a precise instant in time.
Select from global trusted TSA servers such as DigiCert, Sectigo, SSL.com, FreeTSA, or MeSign. No personal signing certificates are required to secure your documents against future tampering.
Supports fully secure local hashing before handshake, guaranteeing absolute document contents remain 100% confidential.
How to Use
Muat Naik Fail
Pilih fail dari peranti anda atau seret dan lepaskan ke sini.
Pilih Pilihan
Sesuaikan tetapan mengikut keperluan dokumen anda.
Proses dan Muat Turun
Klik butang muat turun setelah fail selesai diproses.
Use Cases
Intellectual Property
Establish clear priority proof of patents, drafts, and ideas before public release.
Financial Auditing
Provide certified tamper-proof logging of ledger archives and balance reports.
Legal Contracts
Lock legal agreements with a trusted time proof to avoid backdating arguments.
Frequently Asked Questions
An RFC 3161 timestamp is a cryptographically signed token issued by a recognized third-party authority (TSA) that links a document hash to a specific, verified clock source.