OTP Delays explained — banks DLT tech — TRAI
OTP not coming ? OTP failures led to transaction failures on massive scale
This article explores SMS OTP DLT architecture and alongwith OTP failure reasons. No bloat. Just to the point
How SMS works
ESME — External Short Message Entity
SMPP — Short Message Peer To Peer
SMSC — Short Message Service Centre
MS — Mobile Station
GSM — Global System for Mobile Communications
Above diagrams depict how basic SMS works with telcos
Blockchain DLT
Distributed ledgers use independent computers (referred to as nodes) to record, share and synchronize transactions in their respective electronic ledgers (instead of keeping data centralized as in a traditional ledger)
Blockchain is one type of a distributed ledger
Key elements of a blockchain
Distributed ledger technology
Immutable records
Smart contracts
Blockchain reference architecture
UCC Ecosystem Layers
Depicts operational layers and multiple entities involved
DLT allows all players in the ecosystem to share customer information and transaction histories securely over a distributed data infrastructure , with the consent of the user and without compromising on the customer’s privacy or sensitive business information
Access Providers — Telephone Service Provider, Mobile Service Provider , MVNOs
DLT system operator — Installation , operation and maintenance of DLT networks
Process Executors — Node processes for Scrubbing, Recording Consent, Registration of Header,Template ,Entity
Principal Entities — Authorised Agents sending SMS to end users
DSA — Direct Sales Agents
RTM — Registered Telemarketer
Scrubbing means process of comparing subscriber telephone number in Consent list to check whether commercial communication can be sent to the subscriber (Recipient) as per recipient’s preferences / consent
UCC Ecosystem Components
Recordkeeping — Traditional vs DLT
SMS OTP Scrubber Flow
Principal registrations of banks
Above Figure shows several registration entries by ICICI bank and PNB bank
PNB bank may be missing some entries due as per scrubbing process resulting in OTP failures
ICICI bank — registered and working (apparently)
PNB bank — OTP entry missing?
AXIS bank — 55 entries registered but still OTP failures (faulty implementation ?)
OTP Delay factors
- Phase2 rollout — size not capped
- Faulty implementation of feature(s)
- Not enough publicity on media
- Entity (party) failing to register for DLT
- Severe undermining of size of impact
- Inadequate testing
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