Free and open

Tools

Things I built because I needed them myself.
No account, no paywall, no tracking of what you look up.

Practice

SeedSigner simulator

The whole SeedSigner, running in your browser. Practise before you touch your own bitcoin.

Verify

Prove your SeedSigner download is genuine, in the browser. Nothing you download leaves your computer.

Data

Bitcoin analytics at block resolution, counted on my own node. Every chart traces back to its block.

Privacy

One name you publish once, a fresh address for every payment. Every change is logged, so a quiet edit is impossible.

Node

Point your wallet at my full node instead of a company's. Tor only, and honest about the trade-offs.

Servers

Four scripts for your Linux server: an audit that changes nothing, then hardening passes that roll themselves back.

Mempool

Reads the live mempool on my node and shows which block your fee rate lands in. BTC, sats, USD, EUR.

For fun

Not a tool, a toy. A cypherpunk tower defense where 21 sats over Lightning buys a provably fair operative.

Donate

Found a bug, or want a tool that does not exist yet? Tell me.