Free Certification for Emails

Certify for free in the Blockchain the content and attachments of any email.

Try it by adding
stamp@cert.solidnotary.com
as a CC or BCC recipient of any email.

Instantly certify or verify a document

Drag and drop any file here, or browse your device.

What can be timestamped?

Any file can be timestamped!

We accept any file for timestamping: images, videos, audios, PDF documents, Word documents or any custom file format.

Typical use cases/ideas

Prove that the content of a report document already existed on specific date.

Certify that a recorded conversation existed at some point in the past.

Get attribution of an invention even before a patent filing process.

Time-stamp an electronically or hand signed contract to ensure that it existed on certain date.