In this video, @bobinson talks about SONs: a trustless, decentralized PoS cross-chain mechanism for running smart contracts and oracles to distribute rewards on the Network. On the lightpaper, you can read more about this topic in section 13.
You can also find the Hive version of the lightpaper here, posted from the @spknetwork account. You can view more specifications about SONs here: https://peerplays.gitbook.io/community-project-docs/son/bitcoin-sons/son-requirements-specification.
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