How is a skill confirmed on the platform?
Short answer
A skill becomes confirmed when someone who saw your real work — usually a manager or team lead — verifies it. Until then it stays a declared skill, clearly marked as such.
Confirmation is tied to evidence, not to a test or a self-assessment. When you have done work that demonstrates a skill, a person who can vouch for that work confirms it, and the skill moves from declared to confirmed with a record of who confirmed it.
This keeps the signal honest: a confirmed skill means a real person stood behind real work, and it cannot be granted by the platform itself or bought. You can hold declared skills indefinitely; confirmation is simply a stronger, evidenced state.