LEDGER REGISTRY FOR MOBILE SUBSCRIPTION MANAGEMENT

Disclosed are various embodiments for a discovery service ledger registry used in the process of provisioning electronic subscriber identity modules (SIMs). In one embodiment, an event registration request is received by a subscription manager discovery service (SM-DS) abstraction layer from an entity operated by or on behalf of a connectivity service provider (CSP). The event registration request specifying a unique device hardware identifier and at least one of: a subscription manager data preparation (SM-DP) address or a SM-DP+ address associated with the CSP. The abstraction layer sends the event registration request to an SM-DS. The abstraction layer records the event registration request via a ledger registry service.