First-party trader data is signal a company collects from people interacting directly with its own product, with explicit consent. In the trading context, that means a trader signs up on the platform, agrees to specific data uses, and the platform records the consent metadata as part of the record.
Piplead is a first-party data source: every trader record originates from Piplead's own trade-automation platform. Piplead does not scrape exchanges, doesn't buy lists from affiliate networks, and doesn't re-identify pseudonymous data.
The opposite of first-party is third-party data — bought from a broker who themselves bought it from someone else. Third-party data is cheap upfront and expensive in compliance, conversion, and reputation downstream.