@xuu@txt.sour.is Seems to be fine here?

$ bat https://twtxt.net/twt/yfv5kfq | jq '.text'
"!<dm-echo https://dm-echo.andros.dev/twtxt.txt> U2FsdGVkX1+QmwBNmk9Yu9jvazVRFPS2TGJRGle/BDDzFult6zCtxNhJrV0g+sx0EIKbjL2a9QpCT5C0Z2qWvw=="