Instruction: UpdateTokenMetadata

This instruction is used to update the pool's token metadata account.

A key differentiation between the UpdateTokenMetadata instruction and CreateTokenMetadata instruction is that only the UpdateTokenMetadata instruction can specify name, symbol, and URI.

Input accounts

• vote_account_info: Vote account associated with the pool.

  • W/S requisites: None.

  • Owner: Must be owned by native vote program.

  • Rent: Not a responsibility of the program under review.

  • Initialized: Must be initialized.

  • Discriminant: Checked.

  • PDA: No.

• pool_info: The stake pool.

  • W/S requisites: None.

  • Owner: Single pool program (newly created).

  • Rent: Must be exempt.

  • Initialized: Yes.

  • Discriminant: Checked (account_type field).

  • PDA: Yes, controlled by the single pool program — using seeds "pool", vote_account_address.

• pool_mpl_authority_info: The update authority controlling the metadata account.

  • W/S requisites: None.

  • Owner: N/A.

  • Rent: N/A.

  • Initialized: N/A.

  • Discriminant: N/A.

  • PDA: Yes, controlled by the single pool program — using seeds "mpl_authority", pool_address.

• authorized_withdrawer_info: The authorized withdrawer account as set on the vote account.

  • W/S requisites: Signer.

  • Owner: N/A.

  • Rent: N/A.

  • Initialized: N/A.

  • Discriminant: N/A.

  • PDA: N/A.

• metadata_info: The MPL metadata account address.

  • W/S requisites: Writable.

  • Owner: MPL Metadata program.

  • Rent: N/A.

  • Initialized: No.

  • Discriminant: N/A.

  • PDA: Yes — using seeds

    • "metadata"

    • metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s

    • mint

    • metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s

• mpl_token_metadata_program_info: MPL Token Program account.

  • W/S requisites: None.

  • Owner: N/A (sysvar).

  • Rent: N/A (sysvar).

  • Initialized: N/A (sysvar).

  • Discriminant: N/A (sysvar).

  • PDA: No, but the address must match the MPL token metadata program.