AnyHedge (BCH Bull) and Mecenas are the shipped ones; the rest are covenant experiments. The blocker is tooling: a contract change changes the P2SH address, so wallets lose continuity
Unspent annuities have been running for four years. Fundme.cash, Badgers.cash, Emerald Dao, Cauldron, tapswap,cash, futurebitcoin.cash, wrapped.cash, Vox, Photons.
Also we have p2s.
