Proof

Proof of Connection
"Proof of winning the battle in the portal at Disney Castle. Perhaps it has changed Sora."
Japanese	つながりの証
Rōmaji	Tsunagari no Akashi
Item	Rank	Buy	Sell
Proof of Connection	—	—	—

Proof of Nonexistence
"Proof of defeating all the Organization XIII's replica data in the Garden of Assemblage. Perhaps it has changed Sora."
Japanese	存在しない証
Rōmaji	Sonzaishinai Akashi
Item	Rank	Buy	Sell
Proof of Nonexistence	—	—	—

Proof of Peace
"Proof of appeasing the Mushroom XIII. Perhaps it has changed Sora."
Japanese	安らかなる証
Rōmaji	Yasurakanaru Akashi
Item	Rank	Buy	Sell
Proof of Peace	—	—	—

The Proofs are a set of three key items, exclusive to Kingdom Hearts II Final Mix, which are obtained after completing specific side-missions.

The Proof of Connection is obtained by defeating the Lingering Will, the Proof of Nonexistence is rewarded after defeating all of Organization XIII's Replica Data, and the Proof of Peace is given after appeasing the entire Mushroom XIII.

Crowns

"Crown" redirects here. You may have been looking for Mission Crown.

New costume modifications, known as Crowns, are unlocked by obtaining Proofs. These are equipped on Sora automatically and are present at all times, except during cutscenes and while Sora is in a world-specific costume. There are several types of crowns; possessing one Proof grants Sora a Copper Crown, two a Silver Crown, and all three a Gold Crown. They are purely cosmetic, and have no effect on gameplay.

Gallery

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  Copper Crown

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  Silver Crown

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  Gold Crown