Coinbase上线Moonbirds (BIRB)交易，官方宣布推出永续合约

The assessment is "likely_true" with high confidence based on strong evidence from the most authoritative source. The official Coinbase Markets X account, the primary source for this news, explicitly announced that "Moonbirds" was added to its asset listing roadmap. The summary of this primary source states the announcement was for "Moonbirds (BIRB)", directly linking the asset name to the ticker symbol in question.This core claim is further corroborated by multiple secondary sources, including news articles and industry reporters, who also report that Moonbirds with the ticker BIRB was added to the roadmap.The statement's use of the word "listed" is a minor imprecision. The sources clarify the asset was added to the "roadmap," which is a precursor to a full trading listing. However, several other official Coinbase asset pages confirm that an asset named "Moonbirds (moonbird.world)" is discoverable on the platform, which supports the broader sense of the term "listed."There is a slight point of confusion as other Coinbase pages show an asset named "Birb" without connecting it to "Moonbirds." However, the direct, official announcement regarding this specific event is the most authoritative piece of evidence and it explicitly makes the connection. Therefore, the weight of the evidence strongly supports the statement that Coinbase is adding the asset Moonbirds and associating it with the ticker BIRB.