Constructing Encrypted PII Messages for Exchanges via Fireblocks

Introduction

For institutions using Fireblocks to transact with major exchanges like Binance and Bitstamp, correctly constructing and transmitting Personally Identifiable Information (PII) is critical for ensuring regulatory compliance and the successful processing of transactions. Sending PII requires a robust security model that goes beyond standard transport-layer encryption.

This guide provides a practical, compliance-aware walkthrough for developers and compliance officers on how to structure the PII payload, handle the necessary encryption, and correctly format the transaction.extraParameters object in the Fireblocks API. It breaks down each field and explains the specific data requirements based on key global jurisdictions.

For step-by-step instructions on completing Travel Rule compliance through the Fireblocks Console UI, see Travel Rule compliance for exchange transactions.

Note for Compliance Officers

This document details the technical data structure for compliant PII transmission. The core obligation is to ensure your institution has a robust AML/CFT program that includes counterparty due diligence, risk-based transaction monitoring, and adherence to the specific data requirements of all relevant jurisdictions.