Verifying PRC Corporate Seal Authenticity and Public Security Filings
Verify PRC seals by matching the 13-digit PSB security code against municipal police databases and confirming official Beian filing certificates before signing.
Cinnabar Ink Spectrometry
Meaning
Forensic laboratory tests designed to analyze the chemical composition of official stamp impressions verify the authenticity of corporate documents. Using cinnabar ink spectrometry, forensic experts measure the ratio of mercuric sulfide to synthetic binders in a dry seal impression. This analytical technique distinguishes genuine official inks from counterfeit mixtures used on forged contracts.
Chemical Signature
Different eras and administrative departments use distinct formulations of red stamping paste. The data from cinnabar ink spectrometry reveals the specific molecular weight and elemental composition of the sample. This information is compared against a national database of authorized stamp inks to determine if the ink matches the date of the document.
Forensic Validation
Examiners use specialized scanners to measure the absorption and emission of light through the ink sample without destroying the paper. This application of cinnabar ink spectrometry helps resolve disputes where the authenticity of a corporate chop is challenged during litigation. The test provides an empirical basis for validating or rejecting a contested signature.
Legal Application
Chinese courts accept these laboratory results as definitive evidence in corporate fraud cases. If a contract possesses a fake seal, cinnabar ink spectrometry proves the mismatch and allows the victimized enterprise to void the unauthorized transaction.