Masternode comparison site lists Bismuth, which has a coupled PoW and PoS chain.
Bismuth Community: https://discord.gg/HQwM9ur
https://masternodec.com/BIS.html
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https://www.youtube.com/watch?v=eVN7mXarrfI
Introduction on how to use IPFS image hosting on steemit.com
My steemit content:
https://steemit.com/@bitsignal
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https://www.youtube.com/watch?v=-KSA0lQEtEk