Last updated 20 October 2026
These terms cover dtn.bsvkey.com, run by Embryo Space Inc., doing business as BSVKey ("we"), including the offline pay page at /radio/. By using the site you agree to them. If you do not agree, please do not use it.
The dtn-custody-demo reference implementation is published as open source under the Apache License, Version 2.0. Your use of the software is governed by that license, including its disclaimer of warranty and limitation of liability. It is a reference implementation, not an audited production system; review it and run your own assessment before relying on it.
The pay page signs and hands over real Bitcoin BSV payments by QR code, sound, text message or a direct Nearby link. You sign every payment yourself with your own key, and we never hold your key or your funds. Once a payment is broadcast it is permanent and public and cannot be reversed, cancelled or refunded by us or anyone else. Sound, radio, text and Nearby hand-offs can fail, arrive late, or be heard or seen by others nearby; check every address and amount before you sign, and keep your own backup of your key. Faucet amounts are small gifts from whoever runs the faucet, are first come first served, and are not offered by us unless we say so.
This site and the software are provided "as is", without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. To the maximum extent permitted by law, Embryo Space Inc. is not liable for any damages arising from use of the site or the software.
Nothing here is financial, investment, legal, or tax advice. References to blockchain transactions are technical illustrations, not recommendations. You are responsible for your own keys, funds, and compliance with the laws that apply to you.
We do not hold keys, take deposits, or move funds for you. Any payment, settlement or anchoring is performed by you, with your own keys, on your own device or in your own environment.
"BSVKey" and related marks are used by Embryo Space Inc. (DBA BSVKey). Other names, marks, and linked services (including Bitcoin BSV, µD3TN, GitHub, and WhatsOnChain) belong to their respective owners and are referenced for identification only. The Apache-2.0 license does not grant rights to the BSVKey name or brand.
We may change the site or these terms. The date at the top shows the current version, and continuing to use the site after a change means you accept it.
embryospace@gmail.com. See also the privacy policy.