"BTW I don't remember if we talked about this, but the other day some people were mentioning secure timestamping. You want to be able to prove that a certain document existed at a certain time in the past. Seems to me that bitcoin's stack of blocks would be perfect for this."

"Indeed, Bitcoin is a distributed secure timestamp server for transactions. A few lines of code could create a transaction with an extra hash in it of anything that needs to be timestamped. I should add a command to timestamp a file that way."

Satoshi - Sirius emails 2009-2011

https://mmalmi.github.io/satoshi/#:~:text=%20%3E%20BTW%20I%20don't,file%20that%20way

This is not something new, Satoshi saw it coming from the beginning. In 2024, Screven County, GA became the second election authority in the world to use Bitcoin to protect its election results. In June 2025 they took it further and became the first to protect confidential records: voting rolls. Their example is proof that all governments can use Bitcoin to protect all public records, not just elections, even the most top secret and confidential kind.

Find out how to use OpenTimestamps.org for yourself and what SimpleProof.com is doing to usher in a new era of tamper-evident public records. Let's make Immutable History!