Farcaster Devs

How are FC clients building on channels if they're not part of the protocol yet?

i believe channels are just parent_urls that you reply to, so that is technically part of the protocol. channel follows are what's not protocol-level, so you can read and write casts to channels but you can't follow a channel outside of warpcast

Photography

What’s interesting is that the parent urls can be Warpcast urls, but they are also onchain urls that setup for a permissionless future. Eg hub api call: https://hub.pinata.cloud/v1/castsByParent?url=chain://eip155:7777777/erc721:0x36ef4ed7a949ee87d5d2983f634ae87e304a9ea2 that’s /photography