How to get a list of downloadable objects

[vporton]

I want using Infura API get as many as possible downloadable objects, skipping not downloadable as much as possible. (My purpose is for my file hosting application to get a long list of downloadable files, as long as possible.)

I tried some hashes of messages on ipfs.com and it timeouts instead of downloading an object. What did I do wrong?

First, it were wrong hashes, or maybe I should use something other (what?) than ipfs.com?

I used the following methods for my testing of message hashes:

curl https://2CnweOfSEIWVZ9ESQFaul98dhZU:34dfc7f78e29ab7b05ad6e9a1edf5750@filecoin.infura.io -d '{"jsonrpc": "2.0", "id": 0, "method": "Filecoin.ChainGetParentMessages", "params": [{
                  "/" : "bafy2bzacecdy5q6vwwl3oienqpwcq4knwj7cx3amsjspjpnyxg4au75umnfd2"
               }]}'

2. https://filfox.info/en/message/bafy2bzacea635tfqvbmery5zhqq7v4klgbolg6gguycs6iyaib6xmr42runvw?block=bafy2bzacebrr6z6wvv244ozqzdtqdgwdlob7gqipeif47ygi2ccg6eox5wwrm

All of the several message hashes that I obtained were not downloadable from ipfs.com - Why?