Delegating Trees

Similarly to how the owner of a Compressed NFT can approve a Delegate Authority, the creator of a Bubblegum Tree can also approve another account to perform actions on their behalf.

Once a Delegate Authority is approved for a Bubblegum Tree, it will be able to mint Compressed NFTs on behalf of the creator. Note that this is only relevant for private trees since anyone can mint on public trees.

Approving a Delegate Authority for a Tree

To approve a new Delegate Authority on a Bubblegum Tree, its creator may use the Set Tree Delegate instruction which accepts the following parameters:

• Merkle Tree: The address of the Merkle Tree to delegate.
• Tree Creator: The creator of the Merkle Tree as a Signer.
• New Tree Delegate: The new Delegate Authority to approve.

import { setTreeDelegate } from '@metaplex-foundation/mpl-bubblegum'

await setTreeDelegate(umi, {
  merkleTree,
  treeCreator,
  newTreeDelegate,
}).sendAndConfirm(umi)

Revoking a Delegate Authority for a Tree

To revoke an existing Delegate Authority, the creator of the tree simply needs to set themselves as the new Delegate Authority.

import { setTreeDelegate } from '@metaplex-foundation/mpl-bubblegum'

await setTreeDelegate(umi, {
  merkleTree,
  treeCreator,
  newTreeDelegate: treeCreator.publicKey,
}).sendAndConfirm(umi)