jmL¦In Bitcoin (BCH) we have on-chain:
Twitter - memo.cash
Reddit - matter.cash
WhatsApp - keyport APP
Kindle - bookchain.cash
What else?
Oh, peer-to-peer digital cash!
https://whatsonchain.com/tx/61e4ec34c70acae929dd775124f9a6d481ef9ec77d58ae96550f77241d7613d3