Context
Telecom compliance and financial integrity mandated a tamper-proof Distributed Ledger Technology (DLT) framework to verify, register, and audit financial transaction messaging at staggering scale (20M+ SMS/day).
Case 03 · mint channel
Paytm DLT & SMS Engine
Distributed ledger technology & mission-critical transaction messaging at scale
The problem
What was being asked
The solution
What was built
Slip 1
Spearheaded development of DLT integration leveraging Hyperledger Blockchain and decentralized ledgers for auditability
Slip 2
Refactored backend scheduler and worker modules, enhancing execution performance by 50% and slashing latency under peak loads
Slip 3
Built distributed worker pools with Redis and Node.js to ingest and process high-volume telecommunication event streams
The architecture
How it holds together
Hyperledger Ledger Layer
Decentralized consensus nodes recording tamper-proof message templates, entity registrations, and verification proofs.
High-Throughput Scheduler Pipeline
Optimized Node.js and Laravel workers consuming high-priority transactional queues with idempotent execution and sub-50ms dispatch.
Key Metrics & Impact
Demonstrated Results
- 20M+ daily messages processed
- 50% scheduler performance improvement
- <50ms average transaction verification
Challenges
The parts that tried to break it
Extreme throughput spikes
Financial and OTP traffic surges during flash sales required dynamic worker auto-scaling and zero-downtime queue draining.
Immutable compliance verification
Strict telecom regulations required deterministic signature verification across millions of records without database lock contention.
Decisions
Calls somebody owns
Hyperledger for enterprise compliance
Offered enterprise-grade permissioned ledger control, compliance guarantees, and predictable consensus times.
In-memory caching of active templates
Cached approved message hashes in Redis to minimize cryptographic lookups on hot paths.
Learning carried forward