<oembed><type>rich</type><version>1.0</version><author_name>npub12478zv0dxzfgepyn9m3v8vl8sn5yy8vhxpxump6lnfw84rslr0wqwxpaq3</author_name><author_url>https://nostr.ae/npub12478zv0dxzfgepyn9m3v8vl8sn5yy8vhxpxump6lnfw84rslr0wqwxpaq3</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2020-01-12&#xA;📝 Original message:Hi all,&#xA;&#xA;I&#39;ve been working on a sidechain protocol with no trusted third party. You can find the [whitepaper here](http://coins.github.io/coins.pdf).&#xA;&#xA;Abstract. Coins is a Bitcoin extension designed for payments at scale. We propose an efficient solution to the double-spending problem using a bitcoin-backed proof-of-stake.  Validators vote on sidechain blocks with one-time signatures, forming a record that cannot be changed without destroying their collateral. Every user can become a validator by locking bitcoins. One-time signatures guarantee that validators loose their stake for publishing conflicting histories. Checkpoints can be additionally secured with a bitcoin-backed proof-of-burn. Assuming a rational majority of validators, the sidechain provides safety and liveness. The sidechain’s footprint within bitcoin’s blockchain is minimal. The protocol is a generic consensus mechanism allowing for arbitrary sidechain assets. Spawning multiple, independent instances scales horizontally.&#xA;&#xA;Feedback is highly appreciated!&#xA;&#xA;Thank you&#xA;&#xA;- Robin&#xA;&#xA;PS: [Here on Github you can find further research on scalability and usability](https://github.com/coins/coins.github.io).&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20200112/10bc934c/attachment.html&gt;</html></oembed>