How about Blockstack (https://www.keyvalues.io/blockstack https://www.keyvalues.io/blockstack) or Signal (https://www.keyvalues.io/signal https://www.keyvalues.

How about Blockstack (https://www.keyvalues.io/blockstack https://www.keyvalues.io/blockstack) or Signal (https://www.keyvalues.io/signal https://www.keyvalues.io/signal)?