Distributed ledger technology (DLT) is a digital system for keeping and managing the record of sender IDs and template.

TRAI has introduced an advanced extension of the Blockchain – Distributed Ledger Technology (DLT) to prevent spam

Guidelines for Distributed Ledger Technology (DLT) for Enterprises

Enterprises need to register with the Operator’s DLT platform by submitting necessary business documents. Enterprises need to select a Registered Telemarketer (RTM) and permit them to perform functions on their behalf.

Header (Sender ID) registration: Messages are classified into promotional, transactional, service explicit and service implicit which are registered and every header gets a unique Header ID that is shared across other DLT platforms seamlessly. All headers and templates on the platform should be registered.

Content Template Registration: Entities are required to register all their templates on the DLT system. Every template gets a unique Template ID that is shared across other DLT platforms uniformly.

Changes as per Regulations
Pre DLT Post DLT Remarks
Customer Consent No Yes Verifiable digital records of all customer opt-ins are made available on the platform. Customers can also see all their consents on a single dashboard
Customer Preferences Yes Yes Consumers can also select specific day(s) and time band to block (or) receive. commercial communication in addition to type of category; viz only DND
Entity/Enterprise Registration No Yes Entity need to register with originating access provider (OAP) on the platform
Telemarketer Registration Yes Yes Telemarketer should now register with originating access provider (OAP) and no longer with TRAI
Header Registration No Yes Entity should register all its SMS Headers and Voice CLIs on the platform
Type of Messages Transactional Transactional Every template should be registered under one of these classifications: Promotional, Transactional or Service (Implicit or Explicit)
Promotional Promotional  
Govt Service (Inferred Consent) Government messages are classified under Service category
  Service (Explicit Consent)  
Scrubbing Yes (only DND Check for Promotional SMS) Yes (Promotional & Service Explicit) Messages will be scrubbed against multiple parameters like Consent, Preference, Header, Template; and not just DND list
Complaint Management Yes Yes Telecom operators will now be responsible for complaint resolution
Interoperability between telecom Service Providers No Yes Registration details of Entity, Telemarketer, Header, Template will be shared across the network to ensure seamless view
100% Traceability No Yes Everything is recorded and shared on the network using Blockchain technology.
Delivery Report Yes No Delivery status for promotional messages will not be available post DLT.
1. Promotional Traffic
2. Transactional Traffic Yes Yes Delivery status for transactional messages will continue to be available post DLT.