I need to search for information about this question to provide accurate context.#### Resolution Criteria
Loki has eaten an unnamed Devil Fruit that is purportedly legendary, but the market resolves YES only if Loki consumes the specific legendary devil fruit of Elbaph that was guarded by the royal family. During the incident 14 years ago, someone made off with Elbaph's legendary Devil Fruit, creating ambiguity about whether Loki actually ate it or a different fruit. Resolution will be determined by official One Piece manga chapters clarifying whether Loki consumed Elbaph's legendary devil fruit specifically, or whether he ate a different fruit. The market resolves NO if it is confirmed that Loki ate a different devil fruit or if the legendary fruit was consumed by another character.
Background
Loki is the prince of Elbaph, and is believed by Elbaph's giants to have killed his father in order to obtain an unspecified Devil Fruit. Loki would apparently kill his father, allegedly for the sake of the legendary Devil Fruit that the family was guarding. However, Loki's flashback contests that he did not kill Harald, but is merely "allegedly" his killer, with a character intentionally shrouded in darkness implied instead to steal it. Loki ate the legendary Devil Fruit of Elbaf, and with it, he gained immense power that could see him destroy not just the entirety of Elbaf itself, but also the entire world, though the exact nature of his fruit remains unrevealed in the manga.
Considerations
The identity of Elbaph's legendary devil fruit remains contested among fans and unconfirmed in the manga. Elbaf holds a legendary Devil Fruit tied to Nika worship; Loki did not eat the Fruit and it was likely stolen by the World Government; Luffy ended up eating the Fruit meant for Elbaf, originally found by Shanks. This creates significant uncertainty about whether Loki actually consumed the legendary fruit or a substitute. The manga is still actively revealing details about this arc, so resolution may depend on future chapter releases.