A consumer app that gamifies spam call reporting through blockchain-verified token rewards, automatically aggregating anonymized user reports into telco-grade blocking feeds while preserving privacy via zero-knowledge proofs.

Indian consumers face escalating spam call volumes with no centralized mitigation. Caller-ID apps like Truecaller must now share proprietary spam data with telcos, creating friction between user privacy expectations and regulatory compliance. Failure to comply risks app shutdowns, while current manual opt-in systems leave 72% of users exposed to scams. The $4.3B annual fraud loss in India could escalate if telcos cannot scale network-level blocking.