COINBASE · 2026-10-29 17:25 UTC

Making Coinbase multi-user

Coinbase engineering team describes how they adapted the platform's architecture to support multi-user business accounts while maintaining individual user functionality. The company separated user identity from account ownership by expanding what a user ID represents and using a gRPC interceptor at the service boundary to adapt identity without requiring company-wide coordinated migration. The solution allows multiple people to act on the same business account (e.g., Bob buying BTC for employer Acme Inc.) while preserving permission checks and transaction attribution.

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