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Registry Specs

The registry contract provides a simple mapping between a domain and its resolver.

This contract manages all aspects of domain ownership, including transferring ownership and creating subdomains.

Each entry in the registry points to a resolver, which handles the resolution between the name domain and the desired resource.

The RNS Registry contract provides both data access and modification capabilities through the following functions:

Access Functions

Ownership
```
function owner(bytes32 node) constant returns (address);
```
Retrieves the owner (registrar) of the specified node.

Resolution

function resolver(bytes32 node) constant returns (address);

Returns the resolver for the specified node.

Caching
```
function ttl(bytes32 node) constant returns (uint64);
```
Retrieves the time-to-live (TTL) of the specified node. The TTL defines the maximum period during which the node's information can be cached.

The RNS Registry contract also allows for the modification of node data through the following functions:

Ownership
```
function setOwner(bytes32 node, address owner);
```
Transfers ownership of a node to another registrar. This function may only be called by the current owner of node. A successful call to this function logs the Transfer(bytes32 indexed, address) event.
```
function setSubnodeOwner(bytes32 node, bytes32 label, address owner);
```
Creates a new node label.node and sets its owner to owner, or updates the node with a new owner if it already exists. This function may only be called by the current owner of node. A successful call to this function logs the NewOwner(bytes32 indexed, bytes32 indexed, address) event.
Resolution
```
function setResolver(bytes32 node, address resolver);
```
Sets the Resolver address for node, the contract that handles the desired resolutions. This function may only be called by the owner of node. A successful call to this function logs the NewResolver(bytes32 indexed, address) event.
Caching
```
function setTTL(bytes32 node, uint64 ttl);
```
Sets the TTL for a node. A node's TTL applies to the 'owner' and 'resolver' records in the Registry, as well as to any information returned by the associated resolver.