[LT-03]
The Global Identifier Fragmentation Problem
A marketplace platform with sellers in 45 countries processes onboarding documents that look completely different depending on the seller's country of origin. A Brazilian seller submits a CPF (Cadastro de Pessoas Físicas) — an 11-digit tax ID with two check digits calculated using a specific weighting algorithm. An Indian seller provides a PAN (Permanent Account Number) — a 10-character alphanumeric format combining letters and digits in a specifi...