Resolvers wishing to support multi-chain address resources must provide the following function:
function chainAddr(bytes32 node, bytes4 chain) constant returns (string);
node: RNS node to get the chain address from.
chain: Chain hexa identifier defined in SLIP-0044.
If the Resolver supports
chainAddr lookups but the requested node does not have a record, the Resolver must return an empty string.
Clients resolving the
chainAddr record must check for a
length < 1 value, and treat this in the same manner as a name that does not have a specified chain address resolution - that is, refuse to send funds to or interact with the address. Failure to do this can result in users accidentally sending funds to the 0 address of any chain allowing this behavior.
The function signature is
0x8be4b5f6. This must return true on
Changes to a chain address must trigger the following event:
event ChainAddrChanged(bytes32 indexed node, bytes4 chain, string addr);
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