🔥Fuses
What Are Fuses in PNS?
Fuses in PNS are like digital settings for your .pls domain names. They allow you to grant or revoke certain permissions or features. Once a fuse is "burned" (activated), it can't be reversed until the domain's expiry date.
Types of Fuses in PNS
Parent-Controlled Fuses
Set by the owner of the main .pls domain, these fuses determine the capabilities and restrictions of subdomains.
PARENT_CANNOT_CONTROL: Allows the main domain owner to grant independence to a subdomain. Once activated, the main domain can no longer modify or delete the subdomain.
IS_DOT_ETH: This is an internal setting for when a .pls second-level domain is wrapped. It's not user-controlled.
CAN_EXTEND_EXPIRY: Enables the subdomain owner to extend their domain's expiry date independently.
Custom Fuses: There are 13 additional parent-controlled fuses that can be customized for various purposes.
Owner-Controlled Fuses
These can be set by either the subdomain owner or the main domain owner, acting as permissions that can be revoked.
CANNOT_UNWRAP: Locks the domain, preventing it from being converted back to a non-NFT state. This is a prerequisite for burning other owner-controlled fuses.
CANNOT_BURN_FUSES: Freezes the current state of fuses, preventing any further changes.
CANNOT_TRANSFER: Stops the domain from being transferred to another owner.
CANNOT_SET_RESOLVER: Disables updates to the resolver contract for the domain.
CANNOT_SET_TTL: Prevents changes to the domain's Time To Live (TTL) setting.
CANNOT_CREATE_SUBDOMAIN: Prohibits the creation of new subdomains.
CANNOT_APPROVE: Restricts updates to the approved "subname renewal manager" for the domain.
Custom Fuses: There are 9 more owner-controlled fuses available for custom use.
Understanding Emancipated and Locked States
Emancipated State: A subdomain enters this state when it gains independence, typically after the PARENT_CANNOT_CONTROL fuse is burned. In this state, the main domain can't alter the subdomain until it expires.
Locked State: A domain in this state cannot be unwrapped, ensuring the stability and security of its settings and subdomains.
Hierarchical Nature of Fuses
Fuses operate in a hierarchical manner. For example, to burn owner-controlled fuses, the domain must be in a locked state.
To lock a domain (burn the CANNOT_UNWRAP fuse), the parent domain must have burned the PARENT_CANNOT_CONTROL fuse.
DNS Domains and Fuses
Currently, the fuse system is mainly for .pls domains. DNS domain owners can technically use fuses, but their control is ultimately governed by the DNS network and not fully within PNS.
Key Takeaways
Fuses offer sophisticated management of your .pls domain names, allowing for a wide range of permissions and features.
They provide a means to customize your .pls domains, enhancing their functionality and security.
Understanding the hierarchical nature and the specific functions of each fuse can greatly enhance your experience with PNS.
Last updated
