According to this recent post by Infura on September 23, 2020:
Data is currently pinned until it’s been 6 months since it was last used, so as long as you’re accessing your data within that time frame, it’ll be there for you!
“Decentralization” is one of the words that is used in the
cryptoeconomics space the most frequently, and is often even viewed as
a blockchain’s entire raison d’être, but it is also one of the words
that is perhaps defined the most poorly.
– Vitalik Buterin Feb 6, 2017 https://medium.com/@VitalikButerin/the-meaning-of-decentralization-a0c92b76a274
I will ...
From the SuperRare page you can see the history of the NFT, the first entry being the creation. You can view the transaction in Etherscan by clicking the link. This is the creation transaction:
From Etherscan you can see it's an ERC-721 token with an ID of 23896.