I gues nobody is familiar with gofs.io
The most simple way to upload any file for Unlockable Content feature on Rarible.
All you need is Metamask and create custom RPC for Metamask.
here you can find instructions:
Configure Metamask for GoChain / goFS
Of course you need some GoChain (GO) which is 100% percent Ethereum compatible!
So it is possible to send GO to your existing Ethereum Address right to your MetaMask Ethereum account.
If you have configured for Metamask already, you can view your balance right in Metamask by switching networks.
Requesting a simple button (link) to goFS on the Creation Page for Unlockable Content.
Don’t hesitate to ask, iam close to contact team, if something more is needed.