Build an end-to-end stablecoin treasury on/off-ramp integrating Circle Mint, Fireblocks custody, and TRM screening

Steps

1. Mint USDC via Circle Mint API (wire USD in, receive USDC balance); on mint_confirmed webhook, initiate transfer to Fireblocks vault address via Circle POST /v1/businessAccount/transfers with destination.address set to the Fireblocks vault deposit address
2. On USDC arrival in Fireblocks (detected via TRANSACTION_CONFIRMED webhook), screen the source address via TRM Labs POST /public/v2/screening/addresses; block or flag if riskLevel is HIGH or SEVERE
3. For approved USDC, store in the Fireblocks vault under a designated treasury vault account; configure TAP policy to require dual approval for transfers above a defined USD threshold
4. For outbound disbursements, pre-screen the destination address via TRM Labs before initiating the Fireblocks transfer; log TRM riskScore and riskLevel in the disbursement record
5. For redemptions, transfer USDC from Fireblocks to your Circle Mint address via POST /v1/transactions in Fireblocks, then trigger Circle redemption via POST /v1/businessAccount/payouts once the transfer arrives
6. Reconcile the full flow daily: match Circle balance snapshots (GET /v1/businessAccount/balances), Fireblocks vault balances (GET /v1/vault/accounts), and your internal ledger; alert on discrepancies above a tolerance threshold