Backup and preserve your NFTs before they disappear

A content identifier (CID) is how IPFS names content-addressed data. It is built from cryptographic hashes and metadata about how to interpret the data (via multiformats such as multihash, multicodec, and multibase), not from a server hostname. The same file imported with the same settings should yield the same CID, which is why tools can fetch or pin by CID without trusting a single host.

For a deeper technical walkthrough, read Content identifiers (CIDs) and content addressing in the official IPFS documentation.

You can also preserve NFT assets yourself by running an IPFS node and pinning the same CIDs CIDKeeper shows. Install a full node (for example Kubo, the reference implementation behind the ipfs CLI, or IPFS Desktop which bundles it), run ipfs init once, then start the daemon with ipfs daemon (or launch Desktop). To keep an existing DAG reachable from your disk, use ipfs pin add /ipfs/<your-cid> (often with a recursive pin for large trees). Your node then stores the blocks locally and can serve them to peers on the network. Follow the IPFS command-line install guide and the docs on pinning and gateways for production hardening.

CIDKeeper loads wallet NFTs, extracts metadata and asset CIDs, checks gateway health, then exports exact bytes into a ZIP manifest so you keep an offline backup.

Yes. Pin selected submits existing IPFS CIDs to 4EVERLAND pinning service. CIDKeeper checks current pin status first and skips CIDs already queued, pinning, or pinned.

Yes. CIDKeeper can resolve whether NFTs are currently listed on Foundation and lets you filter listed or unlisted items in larger collections.

CIDKeeper detects Arweave primaries and labels them clearly. IPFS gateway health and pinning apply to IPFS CIDs, while Arweave items can still be inspected in the same collection view.

You do not strictly need one. The hosted deployment can fall back on a shared key so you can try the app right away, but shared keys sit on small free-tier quotas, so you may hit rate limits or slower responses when traffic is high. Adding your own Alchemy key under Your API keys gives you your own quota and a steadier experience. You can rotate the key whenever you like.

Only if you want to pin existing IPFS CIDs through 4EVERLAND from CIDKeeper. Listing NFTs, analyzing CIDs, and ZIP export do not require it. 4EVERLAND offers a generous free tier for pinning (including multiple gigabytes on typical plans; check their dashboard for current limits). Account creation may ask for a one-time on-chain verification step, often paid in a small amount of native token on a supported chain such as Polygon or BNB Smart Chain, depending on their flow and network fees. After that, pinning within your tier can remain free. Always confirm the latest requirements and pricing on 4EVERLAND.

No. The Foundation unlist shortcut uses public Ethereum mainnet data plus a normal wallet transaction to clear a listing. It does not depend on Alchemy or 4EVERLAND. The smart contracts remain on-chain even if this site goes offline: in principle you could call the right function yourself through Etherscan or another block explorer, but finding the correct contract, selector, and calldata is slow and error-prone even for experienced users. CIDKeeper is there so you can unlist in a guided way with one clear flow after your wallet confirms the transaction.

Not in this app. Foundation listings commonly use an escrow-style model: while listed, the token may sit in a Foundation-controlled contract rather than only relying on approvals you can revoke in bulk. A script could send many unlist transactions back to back, but that brings real operational risk: if one transaction hangs, later ones can pile up behind nonce ordering until you replace or cancel transactions manually, which means tuning gas, timing, and sometimes explorer-level intervention. CIDKeeper stays deliberately simple so artists can see how a single unlist works without juggling batch sends and nonce recovery. For several listings, unlist them one at a time here.

No. Connecting a wallet is optional and does not change listing, analysis, export, or pinning. You only need a wallet connection when you want to unlist Foundation works, because that flow must send an on-chain transaction from your account.