I followed your hangout where you discussed that. It's pretty neat but comes with it's own set of concerns. eg Malicious resolvers, spoofing/poisoning attacks- -Most resolvers aren't using DNSCrypt, setting up alias requires registering/managing a domain and keeping it renewed so it's not decentralised or optimal from a privacy standpoint arguably, although it's at least cool if you imagine it will take off and you escape worrying about name disputes.
You have a lot more problems, if your standard resolver is malicious.
Also IIRC DNSCrypt is enforced as part of the protocol, which limits the number of DNS servers you can use, but the security benefits of this are bigger then the disadvantages
The disadvantages of the BBR alias implementation are obvious:
First of all you have to solo mine (or have supportive and generous pool operators), which will not work at a greater scale. Even at this stage, getting a block through solomining is unlikely and asking pool operators to do it, might work now, but with increasing adoption, pool operators won't be able to satisfy the demand.
- Wallet address aliasing: any wallet can be linked with symbolic name via special type extra record in coinbase. Block chain will control registered names uniqueness.
Also with DNS most name conflicts are already solved and you can pay for your Windows license in a system which uses OpenAlias with a transfer command to the address pay.microsoft.com, while at a blockchain implementation like BBR somebody might have stolen the name of Microsoft, while with DNS aliases you normally can easily prove it.
Namecoin is also avaiable to use with the OpenAlias system so this also removes another attack vector