Returns a ready-to-sign transaction that applies the drop's saved edits onchain: stages, supply, base URI, payout, and the OpenSea signer, fee recipient, and payers the drop needs. Every value is computed by OpenSea; do not build or change this calldata yourself, or signed presales stop validating.

Send the transaction from from, the contract's onchain owner. Only the collection owner can call this endpoint.

A 400 carries the reason the drop cannot be published, for example that it is disabled, its launch date is still pending, or it has no saved edits to apply. After a first publish, the drop is live once GET /api/v2/drops/{slug} returns it, which happens after the transaction is mined and indexed.

To reveal, run POST /api/v2/drops/{slug}/metadata/ipfs, wait for it to complete, then call this endpoint again to put the new base URI onchain.