# Make private transfers Moving money inside a zone is one call, and it is private and instant. The same primitive scales from a single transfer to a fifty-thousand-line payroll run without any of it touching the public chain.  A single transfer. You pass the account you hold for the sender; the SDK signs and submits. ```ts import { privateKeyToAccount } from "viem/accounts"; // load the key from your own secret store / env; the SDK never sees the raw key const acmeAccount = privateKeyToAccount(process.env.ACME_PRIVATE_KEY as `0x${string}`); await kakushi.transfers.create({ to: "0xSupplierZoneAddress", // a zone address amount: "40.00", token: "USDC", account: acmeAccount, // source is acmeAccount.address (the account you hold for acme_corp) idempotencyKey: "t_8842", }); ``` A batch, for payroll or mass payouts. One call, many recipients, every amount private from every other recipient. ```ts import { privateKeyToAccount } from "viem/accounts"; // load the key from your own secret store / env; the SDK never sees the raw key const payrollAccount = privateKeyToAccount(process.env.PAYROLL_PRIVATE_KEY as `0x${string}`); await kakushi.transfers.batch({ transfers: [ { to: "0xContractorA", amount: "3200.00", token: "USDC" }, { to: "0xContractorB", amount: "2750.50", token: "USDC" }, { to: "0xContractorC", amount: "4100.00", token: "USDC" }, ], account: payrollAccount, // source is payrollAccount.address (the account you hold for payroll_main) idempotencyKey: "payroll_2026_03", }); ``` :::tip Internal transfers never appear on the host chain as individual line items and cost no host gas. They are reflected only in the aggregate state the proof commits to, which is exactly why fifty thousand payments do not become fifty thousand public records. :::