Migrate CIDv0 to CIDv1

[robertu7]

Background

CIDv1 can use as subdomain to access IPFS data and domain name is case-insensitive while CIDv0 is case-sensitive.

Tasks

• [ ] Convert CIDv0 to CIDv1;
• [ ] Backward compatable for CIDv0;

Refs

• https://docs.filebase.com/ipfs/ipfs-cids#when-to-use-cidv0-vs-cidv1