Wiki · Reference

Common questions

Which computers does it run on?
Version 0.1.0 comes as packages for Macs with Apple silicon, macOS 11 or later; see the download page. On x86_64 Linux, build from source; see Building from source.
Why does macOS stop it from opening?
The app is signed with Kaptonia’s self-signed certificate and is outside Apple’s notarization, and files downloaded in a browser carry the quarantine flag. Check the SHA-256 first, then remove the quarantine flag in Terminal; see Getting started · Installation.
Is there a token?
The project itself has zero tokens. Anchoring costs the chain’s own gas.
Who operates it?
The registry contract runs by itself and the app runs on your machine; each user operates their own part.
Do I need to sign up?
Your identity is a set of keys generated on your machine, ready to use once generated.
Where is the data kept?
On your machine, encrypted. The chain holds entry IDs and the sending address.
What does anchoring cost?
The default network is Ethereum mainnet, which costs real ETH; how much depends on the fee at the time. A batch of entries travels in one transaction, and the more entries, the less each costs; before sending, the app shows the gas cap. To try it first, switch to the Sepolia testnet as the Wiki describes.
Are my files uploaded?
Files stay on your machine. Fingerprints are computed locally, and what goes to the chain is entry IDs (the SHA-256 of each entry).
What if I change computers or lose my keys?
The whole-machine backup and its password restore every identity, ledger and setting; the original files are yours to keep. With the 12 recovery words alone, you recover the keys and the data readable on chain, and the ledger itself comes back from a whole-machine backup. With both lost, the local data stays sealed for good.
What if I forget the passcode?
Press “Forgot passcode” on the passcode gate and reset it with the primary identity’s recovery words or key file, or restore from a whole-machine backup; see A forgotten passcode.
What if I find a mistake after recording?
Add a note that explains it, or delete the record. The original entry stays in the ledger as it is.
What does the other side need in order to verify?
This app or the zikaron command line, both open source. Verification only reads, and uses public data and the files you hand over.
Can it prove that I am the original author?
It proves that your key held the content by a certain moment at the latest. The more continuously the making of a work is recorded, the more convincing that proof. See What a record proves.
May I use it commercially, modify it or republish it?
Yes. Code and text are under the MIT licence; keep the licence text. The embedded fonts each follow their own licence.
How does it relate to the law where I live?
It is an optional tool that runs alongside local law. Observe the law where you live as usual.
Whom do I ask when something goes wrong?
Open an issue on GitHub, or visit the discussions. Report security vulnerabilities through the repository’s private channel; see Developer guide · Security.

This site

What does this site record?
Two display preferences, kept in your browser: which product groups are folded in the sidebar, and which product is selected. They stay on this machine. The pages make two kinds of request: the site’s own static files, and fonts from Google Fonts.