With the proviso that I am woefully behind on reading up on the retrieval market developments, I understand that there's a few projects being built in parallel

With the proviso that I am woefully behind on reading up on the retrieval market developments, I understand that there's a few projects being built in parallel with different emphasis. One model is essentially a P2P CDN, where the verification would be distributed across, essentially, IPFS nodes: https://pl-strflt.notion.site/Filecoin-Saturn-efc122f123f344ff8ff0de6071954dba https://pl-strflt.notion.site/Filecoin-Saturn-efc122f123f344... Another, which I will try and dig up a link to (if I haven't imagined it entirely) is more of a sentinel system, whereby clients and storage providers have a protocol to pick a neutral third party that escrows and streams FIL payments from clients to SPs, conditional on retrievability. But as I say, I'm not an expert here.