Based on my understanding, Oraclize is a centralized solution. What are some ways to decentralize Oraclize?
By leveraging the proof-types Oraclize offer (about which see here in the docs) you can ameliorate much of the centralizing aspect of using an oracle service. This means that now you're only trusting the source you're requesting data from, but not the Oraclize service that is retreiving you that data.
google Towncrier/ChainLink, they are building decentralized oracles on intel SGX.
Going further down that road, I think hyperledger sawtooth could offer a basis for a true decentralized oracles blockchain network as they use a consensus system that is based on intel SGX. However not sure if there has been research done on this.
Nontheless the proof-of-authenticity of OraclizeIt is a good start, if it truly works that is. I haven't checked it.