"I've proceeded" is correct and usable in written English.
You can use it when you have taken the necessary steps to move forward with a particular process. For example: I've proceeded to the next step in the contract review process.
This has been the way I have proceeded ever since".
Perhaps if I had proceeded to some other unrelated activity, it wouldn't have crashed.
And since I saw it in 1972, I have proceeded on the assumption that all motels are the wrong motel.
He quoted John Donne who also was changed by a near-death experience: "Though I may have seniors, others may be elder than I, yet I have proceeded apace in a good university, and gone a great way in a little time, by the furtherance of a vehement fever".
Maybe that is one of the reasons Declan Hill and I have proceeded so slowly with our map: we are pretty sure we are on to something, but we are reluctant to force the issue, to see what we want to see rather than what we can.
These reflections often came to my mind, and induced by the importance of this subject, I have stepped unknowingly into so intricate a matter; but since I realized that I had gone too far to come back, I have proceeded the best I could and proposed the solution that I judged most probable.
William Davison, whom Leicester had sent to explain his doings to the Queen, described a visit to the Countess during the crisis: "I found her greatly troubled with tempestuous news she received from court, but somewhat comforted when she understood how I had proceeded with Her Majesty".
So far I have proceeded under the hypothesis that mesolimbic dopaminergic activity is part of an error prediction system.
The town said it has proceeded cautiously.
If I had been ready to buy, I would have proceeded with no nagging worries about better prices elsewhere.
