The Certificate of Incorporation (COI) is arguably the single most important document a company possesses. Issued by the Registrar of Companies (ROC) via the MCA21 portal, it officially recognises a company's existence as a legal entity under the Companies Act, 2013. Every COI issued through MCA21 carries a digital signature — but this signature shows as "unknown" or "not valid" in standard PDF readers, causing confusion for founders, investors, lawyers, and bankers alike.
When a company is incorporated, the ROC officer digitally signs the Certificate of Incorporation using the MCA21 Certifying Authority (CA) infrastructure. This digital signature serves two critical purposes: it confirms the document was genuinely issued by the ROC (authenticity), and it proves the document has not been altered since it was signed (integrity).
The MCA21 CA is licensed under the Government of India's IT Act, 2000, and is fully legally recognised for electronic transactions. However, commercial PDF readers like Adobe Acrobat do not pre-load Indian government CA certificates — so the signature appears "unknown" to end users even though it is cryptographically valid.
Investor Due Diligence: Before a funding round closes, investors' legal teams verify the COI as part of their due diligence checklist. A COI with an unverified digital signature may require additional physical verification — slowing down the deal. A pre-verified digital COI via VerifySign.in eliminates this friction.
Business Bank Account Opening: Banks in India require the COI to open a current account for a company. Relationship managers and compliance teams may flag a COI with "signature not valid" as a potential risk indicator, requiring manual escalation. A verified COI accelerates the process.
Statutory Audits: Company auditors are required to verify the authenticity of the COI as part of their engagement. A digitally verified COI with a clear audit trail from VerifySign.in serves as a reliable source of truth.
Tender Submissions and Government Contracts: Government procurement portals and PSU tender authorities require authentic company documents. A verified COI reduces scrutiny and demonstrates compliance.
VerifySign.in has integrated the MCA21 CA certificate chain — the root and intermediate certificates used by the ROC to sign COIs — into its verification engine. When you upload a COI, VerifySign.in performs a full cryptographic check: it verifies the digital signature against the document content, validates the MCA21 CA certificate chain, and confirms the certificate was valid at the time of signing. The result is a clear, human-readable verification report delivered in seconds.
Step 1: Retrieve your COI PDF from the MCA21 portal (mca.gov.in) under company master data or from your company's records.
Step 2: Visit VerifySign.in.app and upload the COI PDF.
Step 3: VerifySign.in identifies the MCA21 CA signature and runs the verification automatically.
Step 4: Download the verification report or a verified copy of the COI with LTV data embedded (₹49) for sharing with investors, banks, or auditors.
VerifySign.in's support for MCA21 signatures extends beyond company COIs. LLP (Limited Liability Partnership) Incorporation Certificates are issued through the same MCA21 infrastructure and carry the same MCA21 CA signature — VerifySign.in verifies these too. Similarly, registered Partnership Deed acknowledgements from MCA may also be supported. If you have an MCA-issued document with a digital signature, VerifySign.in is the right tool to verify it.
Instant digital signature verification for any government PDF — free, secure, no software needed.
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