How to bulk list NFTs on Blur? (Aggregator trading guide)

Bulk Listing Process on Blur

1. Connect your Ethereum-compatible wallet to Blur via the official website. Ensure the wallet holds both the NFTs you intend to list and sufficient ETH for gas fees.

2. Navigate to the Portfolio tab and locate the collection containing the assets you wish to list in bulk.

3. Select multiple NFTs using the checkbox interface—Blur supports multi-selection across pages when holding Shift or Ctrl while clicking.

4. Click the Bulk Actions dropdown and choose List. A modal will appear with listing parameters.

5. Enter a fixed price or configure an English auction with start time, duration, and reserve. You may also toggle Allow Offers if desired.

6. Confirm the transaction in your wallet. Gas estimation appears before signing; Blur displays approximate costs based on current network conditions.

Gas Optimization Strategies

1. Blur batches multiple approvals and listings into single transactions whenever possible, reducing per-NFT overhead compared to OpenSea or LooksRare.

2. Use the Approve All function once per collection instead of approving each token individually—this saves significant gas over time.

3. Monitor real-time gas prices using Blur’s built-in estimator located at the bottom of the listing modal. It reflects EIP-1559 base fee plus priority tip.

4. Avoid listing during peak congestion windows such as major mint events or top-tier NFT floor sweeps, where base fees spike unpredictably.

5. Consider scheduling listings just after major blocks are confirmed—gas tends to dip slightly in the 3–5 minute window following large settlements.

Collection-Specific Listing Rules

1. Some collections enforce royalty enforcement contracts that require buyers to pay royalties on secondary sales—Blur respects these rules automatically during listing setup.

2. Collections with dynamic metadata or on-chain rendering logic may display preview inaccuracies until the listing is fully indexed by Blur’s indexer nodes.

3. If a collection uses proxy registries like ERC-6551 or Soulbound Tokens, Blur currently does not support direct listing of embedded assets without manual contract interaction.

4. Verified collections show green checkmarks next to names in the Portfolio view—unverified ones may lack accurate floor data or trait filtering capabilities.

5. Certain blue-chip collections restrict listing to specific marketplaces via whitelist mechanisms; attempting to list outside permitted platforms results in revert errors.

Order Management After Bulk Listing

1. All listed items appear under the Active Listings section within Portfolio, sorted chronologically by creation timestamp.

2. Hovering over any listing reveals quick-action buttons: Edit Price, Cancel, or View Transaction on Etherscan.

3. Canceled listings trigger refund of listing fee (if applicable) but do not return gas spent on the original approval or listing tx.

4. Blur allows partial cancellations—select only some listings from a prior bulk action and cancel them independently without affecting others.

5. When an offer is accepted, Blur executes a match instantly using its internal orderbook engine, bypassing traditional on-chain swaps unless cross-market arbitrage is involved.

Frequently Asked Questions

Q: Can I bulk list NFTs from different collections in one operation?Yes. Blur permits selection across collections as long as they reside in the same wallet and share compatible standards (ERC-721 or ERC-1155).

Q: Why does my bulk listing show “Insufficient Allowance” even after approving?This occurs when the approved allowance value is lower than the number of tokens selected. Re-approve with infinite allowance or specify a higher amount manually.

Q: Does Blur support batch listing with different prices per item?No. Bulk listing enforces uniform pricing or auction settings. To assign unique values, list individually or use third-party scripting tools compatible with Blur’s API.

Q: Are expired auctions automatically removed from Active Listings?Expired English auctions remain visible but are marked as Expired and cannot receive new bids unless relisted.