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Overview

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Eligibility

Reach out to your Bastion representative to gain access to Issuance API flows.
  • An approved Business identity.
    • Note that Issuance is not supported for Individual identities at this moment.

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Core concepts

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Mint destination address

A mint destination address is a blockchain address that you register so it can receive newly minted stablecoins for an identity. When you create a mint address, you provide the on-chain address, the chain, a label, and the identity ID.
  • Linked to an identity
  • Required before creating mint instructions. Mint instructions reference a mint destination address by ID

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Mint instructions

When you create mint instructions, Bastion returns mint instructions: the bank account details where you must wire funds and a memo ID that must be included in the wire. The memo_id links the incoming wire to the mint. Without it, funds cannot be matched to a mint request. Mint instructions are tied to one identity and one mint destination address. You must register that mint destination address before creating mint instructions.

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Bank account

A bank account is a saved bank account that you provide to Bastion. You use a saved bank account when creating the redemption instructions covered below.
  • Linked to an identity
  • Create once per bank account destination
  • An identity can have multiple bank accounts for different banks or purposes
  • Required before creating redemption instructions

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Redemption instructions

Redemption instructions define where Bastion sends USD when you redeem stablecoins. They are tied to one bank account and one identity, and they produce a redemption address on a specific chain.
  • The redemption address is the on-chain address where you send stablecoins to initiate a redemption
  • When you send a Bastion Issued Stablecoin to that address, Bastion burns the stablecoins and wires the equivalent USD to the bank account tied to the redemption instructions

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Mint flow (USD -> stablecoin)

High-level flow to mint Bastion Issued Stablecoin:
  1. Create a mint destination address: Call Create Mint Destination Address and provide a wallet address to receive minted stablecoins
  2. Create mint instructions: Call Create Mint Instructions and provide the mint destination address. Save the returned wire deposit details and unique memo ID
  3. Send the wire: Send a USD wire from your bank to the account in the mint instructions, including the memo ID in the wire details.
  4. Monitor status — Via webhook or polling on List Mints until status COMPLETED. Bastion mints stablecoin to the specified destination wallet

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Redemption flow (stablecoin -> USD)

High-level flow to redeem Bastion Issued Stablecoin:
  1. Register a bank account: Call Create Bank Account and provide destination bank account details
  2. Create redemption instructions: Call Create Redemption Instructions and receive the redemption address
  3. Send stablecoin to the redemption address: Send stablecoin from your wallet to the redemption address. This will initiate a redemption request
  4. Monitor status — Via webhook or polling on List Redemptions until status COMPLETED. Bastion sends USD to the specified bank account.