Verify a claim
For buyers, auditors and anyone reading an offset claim. Check whether a certificate is registered, whether its credits are already retired, and for whom, straight from the contract.
Check a certificate
Your file is hashed in this browser and only the hash is looked up. Nothing is uploaded.
Look up a batch
Every registered batch has a public page with its full on-chain record.
Check serials before you buy
Enter the serial range a seller is offering. If any of it is already registered or retired, you'll see where.