> For the complete documentation index, see [llms.txt](https://docs.fractalvisions.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fractalvisions.io/fveco/hub/cid.md).
# Custom C.I.D
#### FV Deployment Docs
* FV custom metadata pinning
**Enter a custom CID from IPFS/ARWEAVE**
A CID (Content Identifier) is a unique fingerprint for a file stored on a decentralized network — it's generated from the file's content itself, so the same file always produces the same CID.
If you deploy a smart contract please send us the contract address or name of collection to add to the marketplace for listing.
Then we can coordinate on posting about the project on social media. Take your time. Make art.
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