Free and open
Tools
Things we built because we needed them, and then left running for everyone. No account, no paywall, no tracking of what you look up.
Practice
SeedSigner simulator
The whole SeedSigner hardware wallet, running in your browser. Real firmware, faked camera and screen, so you can learn the flow and make your beginner mistakes before any of your own bitcoin is involved.
Open the simulatorVerify
Check your SeedSigner software
Download the SeedSigner software, check the signature proves it is genuine, and write it to your memory card. Everything happens in the browser tab, so nothing you download leaves your computer.
Check a downloadData
Onchain per block
Bitcoin analytics at block resolution, counted on our own archival node instead of bought from a data vendor. Close to a million blocks, every chart traceable to the block it came from.
Explore the dataPrivacy
silentpayments.net
A payment name like you@silentpayments.net that anyone can pay, and that publishes nothing about what you were paid. Every claim and change is written to a hash-chained log, so a quiet edit is impossible.
Claim a nameNode
Our Bitcoin node, over Tor
Point your own wallet at our full node instead of a company's server. Reachable only as a Tor address, which is deliberate. The page has the address, the setup, and an honest list of what you give away by using it.
Connect your walletServers
Server hardening scripts
Four scripts you can actually run on your own Linux server: a read-only audit that changes nothing, then three hardening passes that roll themselves back if something breaks.
Read and runFound a bug, or want a tool that does not exist yet? Tell us.