Blockchain Timestamping
- Presently available at no additional cost. May be subject to additional pricing in the future.
How does blockchain timestamping work in Zoho Sign?
- Documents that were blockchain timestamped prior to November 2021 were timestamped onto the Ethereum public blockchain.
- The steps to verify the timestamps of these documents are given at the end of this page.
- Zoho Sign no longer uses the Ethereum network for blockchain-based timestamping.
How do I enable blockchain timestamping in Zoho Sign?
- Hover over Settings in the left navigation panel on your Zoho Sign dashboard.
- Select Account settings under Admin from the dropdown menu.
- Click the Blockchain tab and toggle Blockchain time-stamping to ON.
How do I verify a document timestamp on the Bitcoin blockchain?
- Upon successful completion of all signing activity in a document, the status of its timestamp or associated transaction on the Bitcoin blockchain will be in the document details page.
- Typically, this Bitcoin transaction may take up to eight hours from the time of document completion to be completed depending on the length of the transaction queue at the time. During this period, the status of the transaction will show as PENDING on the document details page.
- Upon the completion of the Bitcoin transaction, the transaction block is added to the blockchain and the status of the transaction changes to SUCCESS in the document details page. Is transaction ID and transaction commit time, the associated document's sign completion time, and document hash (SHA-256) can be viewed by clicking View more.
- For further verification, click the link icon in the transaction details box. This will take you to the website of the OpenTimestamps service, where you can view details such as the Bitcoin block ID where the aggregated document hashes were recorded.
- Click the Bitcoin block ID to view a list of the document hashes committed to the blockchain in that block.
- The hash of the current document should be present in the list.
How do I verify a document timestamp on the Ethereum blockchain?
- For documents with successfully completion of all signing activity, the status of the associated Ethereum blockchain transaction can be seen in the document details page.
- Click View more to see the details of the transaction. This displays the timestamp's transaction block commit time and transaction ID, as well as the associated document's sign completion time and document hash (SHA-256).
- For further verification, click the link icon in the transaction details box. This will take you to the Transaction Details page of the associated transaction on the Ethereum Blockchain Explorer website.
- Expand the Click to see more option to view the Input Data field. This field lists the aggregated document hashes, each separated by 0000, added to the data field of that transaction block.
- OpenSSL: openssl dgst -sha256 <filename>
- Windows: CertUtil -hashfile <filepath> SHA256
- MacOS: shasum -a 256 <filepath>
- Linux: sha256sum <filepath>
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