Mediated Release

Releases a mediated escrow to a recipient — either the depositor or the beneficiary. The mediator (a required signer) authorizes the transfer; the program moves the escrowed tokens from the vault to the recipient's associated token account, closes the MediatedEscrowDeposit, and sends its rent to the rent collector.

The recipient must be either the deposit's depositor or its beneficiary — the program rejects any other account.

Program method — mediated_release

Derives the mediated escrow PDA, the vault, and the recipient's associated token account, then builds, signs (payer + mediator), and sends.

Parameter	Type	Required	Default	Description
payer	Keypair	yes	—	The fee payer; co-signs.
mint	#to_s	yes	—	The escrowed mint.
mediator	Keypair	yes	—	The deposit's mediator; co-signs.
recipient	#to_s	yes	—	The depositor or beneficiary receiving the tokens (its ATA is derived).
rent_collector	#to_s	yes	—	Account that receives the closed-account rent. Must match the deposit's rent collector (the mediator, if none was set).
id	#to_s	yes	—	The unique id the escrow was created with.
token_program_id	String	no	legacy SPL Token	Token program that owns the mint.

Plus the shared sign: / execute: controls and Solace::Transaction return — see Conventions.

tx = program.mediated_release(
  payer:          mediator,
  mint:           mint_address,
  mediator:       mediator,
  recipient:      beneficiary.address,
  rent_collector: mediator.address,
  id:
)
connection.wait_for_confirmed_signature { tx.signature }

TIP

The deposit records who the rent collector is (defaulting to the mediator). To fill it from chain, fetch the deposit first: program.fetch_mediated_escrow_deposit(address:).rent_collector — see PDA Derivation & Fetchers.

Composer — ZarTrustlessEscrowMediatedReleaseComposer

The mediated escrow PDA, vault, and recipient token account must be resolved first.

Parameter	Type	Required	Default	Description
mint	#to_s	yes	—	The escrowed mint.
mediator	#to_s	yes	—	The mediator (readonly signer).
recipient	#to_s	yes	—	Depositor or beneficiary receiving the tokens.
recipient_token_account	#to_s	yes	—	The recipient's destination token account (ATA).
mediated_escrow_deposit	#to_s	yes	—	The MediatedEscrowDeposit PDA.
program_token_account	#to_s	yes	—	The vault PDA.
rent_collector	#to_s	yes	—	Receives the closed-account rent.
fee_payer	#to_s · Keypair	yes	—	Fee payer; writable signer.
id	#to_s	yes	—	The unique id the escrow was created with.
program_id	#to_s	no	mainnet PROGRAM_ID	The escrow program id.
token_program_id	#to_s	no	legacy SPL Token	Token program that owns the mint.

mediated_escrow, = program.get_mediated_escrow_deposit_address(id:)
vault,           = program.get_vault_address(mint: mint_address)
recipient_ata,   = Solace::Programs::AssociatedTokenAccount.get_address(
  owner: beneficiary.address, mint: mint_address
)

composer = Solace::Composers::ZarTrustlessEscrowMediatedReleaseComposer.new(
  mint:                    mint_address,
  mediator:                mediator.address,
  recipient:               beneficiary.address,
  recipient_token_account: recipient_ata,
  mediated_escrow_deposit: mediated_escrow,
  program_token_account:   vault,
  rent_collector:          mediator.address,
  fee_payer:               mediator.address,
  id:
)

tx = Solace::TransactionComposer.new(connection:)
                                .add_instruction(composer)
                                .set_fee_payer(mediator)
                                .compose_transaction

tx.sign(mediator)
connection.send_transaction(tx.serialize)

Low-level instruction (advanced)

MediatedReleaseInstruction.build encodes the raw instruction.

• Discriminator: [154, 204, 22, 195, 162, 179, 197, 181]
• Encodes (data): pubkey(id)
• Accounts (in order): mint · mediator (readonly signer) · recipient · recipient_token_account (writable) · mediated_escrow_deposit (writable) · program_token_account (writable) · rent_collector (writable) · fee_payer (writable signer) · system_program · token_program · associated_token_program.

Parameter	Type	Required	Description
id	#to_s	yes	Unique id; encoded into data.
mint_index	Integer	yes	Index of the mint.
mediator_index	Integer	yes	Index of the mediator.
recipient_index	Integer	yes	Index of the recipient.
recipient_token_account_index	Integer	yes	Index of the recipient's token account.
mediated_escrow_deposit_index	Integer	yes	Index of the MediatedEscrowDeposit PDA.
program_token_account_index	Integer	yes	Index of the vault.
rent_collector_index	Integer	yes	Index of the rent collector.
fee_payer_index	Integer	yes	Index of the fee payer.
system_program_index	Integer	yes	Index of the System program.
token_program_index	Integer	yes	Index of the token program.
associated_token_program_index	Integer	yes	Index of the Associated Token Account program.
program_index	Integer	yes	Index of the escrow program.