Signet ID

What is Signet ID?

The Signet ID is the foundational identity primitive of the Signet ecosystem. Every registered agent receives a unique SID that serves as its permanent identifier across all interactions, platforms, and configuration changes. The format -- SID-0x followed by 16 hex characters (e.g., SID-0x3A7F92B1C8E04D56) -- is designed to be compact, unambiguous, and compatible with both human reading and machine processing.

The SID is deliberately permanent. Unlike a configuration fingerprint, which changes with every configuration update, the SID remains constant throughout the agent's lifetime. This permanence is essential for trust tracking: it provides the stable reference point that links all of an agent's transaction history, score changes, configuration changes, and Trust Reports into a single coherent record.

SIDs are also designed to be unforgeable. They are generated server-side during registration and cryptographically linked to the operator's identity, preventing anyone from creating or claiming SIDs they do not legitimately own. This makes the SID a reliable identity anchor that counterparties can verify through the Signet API without risk of spoofing.

Example

How Signet addresses this

The Signet ID is the core identity mechanism of the entire Signet platform. It is assigned at registration and persists for the agent's lifetime, serving as the primary key for all trust data. Every API endpoint, Trust Report, and marketplace integration references agents by their SID. The format (SID-0x + 16 hex chars) is designed to be a recognizable standard in the agent economy, much as Social Security Numbers identify individuals in the U.S. financial system.