Identity Bridge helps you connect digital identities by correlating usernames to email addresses and vice versa. It queries GitHub public events, PGP keyservers (keys.openpgp.org, keyserver.ubuntu.com), Gravatar, and other public APIs to find connections between a username and associated emails, or discover which usernames are linked to a given email. This is invaluable for OSINT investigations where you need to bridge identities across platforms.
githubpgpcorrelationidentity
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Features
Username → Email correlation
Email → Username correlation
GitHub events API querying
PGP keyserver lookups
Gravatar association
Multiple public source queries
Bidirectional identity mapping
HTML session export
Live query log
Professional dark-themed GUI
Quick Start
# 1. Extract the zip and enter the folder cd 03-Identity-Bridge
How Can You Correlate Usernames to Email Addresses?
Identity Bridge connects pseudonymous usernames to real email addresses by querying GitHub Events API data, PGP keyservers (7+ million public keys), and public APIs. According to SANS SEC487, this username-to-email correlation is often the critical link that de-anonymizes an online persona.
How GitHub Events Expose Identities
GitHub's public Events API records every push, pull request, and commit with the author's Git email. According to GitGuardian (2024), over 12.8 million secrets were exposed in public GitHub commits in one year — and email addresses in commit metadata are an even more common exposure. Identity Bridge searches this data to find email addresses associated with GitHub usernames and vice versa. This is a legitimate OSINT technique documented in OSINT Techniques by Michael Bazzell.
PGP Keyserver Intelligence
The SKS keyserver network and modern replacements like keys.openpgp.org store public cryptographic keys containing owner names and email addresses — often multiple addresses across a career. These records are permanent, publicly searchable, and cannot be removed from older keyserver networks, making them a persistent identity correlation source.
🔗 Identity Bridge — Frequently Asked Questions
What does the identity bridge tool do?
It cross-references usernames, email addresses, and names across multiple data sources to find linked accounts and build identity profiles. All queries use publicly available information and free APIs.
Does the identity investigation tool require installation?
No. The tool runs entirely in your browser using client-side Python via Pyodide. No installation, API keys, or server-side processing required. Your queries are executed locally for maximum privacy.
What can I do with the identity investigation tool?
You can aggregate public records, social profiles, and digital footprints for a name. The tool provides a clean interface with exportable results and cross-links to related Max Intel tools for deeper investigation.