(#5sdepuq) @prologic@twtxt.net For hash calculation we could maybe rethink the newlines and use tabs instead. This is more in line with the twtxt file format itself. With tabs it also is much closer to the registry format (minus the nick).

What about the timestamp format? Just verbatim as it appears in the feed (what I would recommend) or any other shenanigans with normalization, like +00:00 → Z?

An append style is not required, btw. If one uses prepend style feeds, the new URL simply comes at the beginning of the file, where the old URL is further down.

Clients must use the full-length hash in their storages, but only use the first eleven digits when referencing? This differentiation is a bit odd.