Is there any evidence of this? I've never heard anything about it.
He said he is going to move the anonymization on to the protocol level so mixing at the masternode level is not needed anymore. Masternodes will however do the work of quorums i.e. instant transactions (which will be on by default iirc) and decentralized API.
When and where did he say this?
Here, let me Search Function that for you.
Ring signatures are going to be implemented in V2. I will begin development immediately after I opensource V1.
18 months later, that promise remains broken.
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Actually he decided to drop the ring signatures in favor of Darksend/Mixing because of blockchain bloat 10 days later.
I've had some substantial progress on DarkSend and have figured out how to make our existing system as secure as ring signatures. Vastly improved security, no bloat (from the ring signatures) and without actually having to trust new cryptography (it hasn't been extensively tested like what DarkSend uses) . So I think it'll give us a HUGE advantage in the coming months. More to come soon, I'm going to start implementing this tomorrow.