Verify Attestation Signature
Cryptographically verify NFT creator identity
Works offline - no data is sent to servers
📄Method 1: Upload Certificate File
Upload the downloaded NFT certificate HTML file to automatically extract and verify the attestation signature.
📋Method 2: Paste Attestation JSON
Paste the complete attestation JSON data from a certificate's "View Complete Verification Data" section.
How Verification Works
1
Extract Signature Data
The tool extracts the attestation signature and signed message from your certificate
2
Cryptographic Verification
Using EIP-712 (Ethereum standard), we recover the address that created the signature.
3
Address Comparison
If the recovered address matches the signing address, the signature is valid.
Privacy Note: All verification happens in your browser. No data is sent to our servers.