bitcoin++
§ Project file

Bitcoin++ Guestbook: The Forever Wall

The permanent record for this hackathon project: write-up, links, team, tags, and prizes.
Submitted Bitcoin++ Sovereignty Edition
The Forever Wall: BDK generates a unique tipping address for every comment (its own bank account). OpenTimestamps provides uncensorable proof that the text existed at 2025 Bitcoin++ Taipei
Live demo ↗ Docs ↗
The write-up

Inspiration

The Great Firewall

What it does

The Forever Wall is a guestbook that gives every comment its own tip jar and timestamps. Using BDK, we generate a unique Bitcoin address per entry. Then, OpenTimestamps stamps the text, providing uncensorable proof that each message was written at Bitcoin++ 2025 for all future civilizations.

How we built it

Challenges we ran into

Accomplishments that we're proud of

Satoshi signed on the Wall

What we learned

What's next for Bitcoin++ Guestbook: The Forever Wall

Try it out