The Mysterious 10th Bearer.

[Boromir88]

Your Boromir statement is a good one.

I think for the answer of this question, you have to look ahead to Galadriel. Who was able to view the ring, and resist it, since she had the power, but touching it and being a ringbearer herself could have been disaster. Elrond and Gandalf both had that power, being ringbeares like Galadriel, to view the ring, but to touch it would cause them to want it. I have switched my opinion to Elrond and Gandalf, first because one probably wouldn't change the chain without telling the other. Secondly, if you look at Osse's point...

What is to say he could not have picked it up by its original chain, and sliding the ends of the new chain through, clasp it onto young Frodo's neck. It could be done without touching the Ring at all.

I agree with this, one could easily change the chain, and get rid of the old one, without touching the ring. But, to do so it would probably take atleast two people. Most likely answers would be Gandalf and Elrond, since they had the will to see the ring, but touching the ring would have been disaster.

I'd like to let everyone know, this question is unanswerable, but it's fun to debate, there is no right or wrong answer, theres more likely answers then other, but none are more right then others. It's based on speculation and opinion. It's just fun to debate.