Bithumb就2月比特币误发事件追讨资产，申请临时查封

The claim is strongly supported by the upstream Chosun Biz report, which directly states that Bithumb began provisional asset-seizure/preservation procedures after failing to recover assets from its February mistaken BTC payout event. That source specifically mentions 249 users, a reward event intended to pay 620,000 won in total, a unit-entry error that caused BTC to be distributed, and about 12.3 billion won in unrecovered value. PANews and BlockBeats independently restate the same key facts from the Chosun Biz report. The wording 'begun preservation procedures' is accurate. The amount 'roughly 12.3 billion won' and the affected '249 users' are also supported. A nuance is that Chosun Biz highlights 7 BTC as the still-unrecovered portion tied to the current asset-seizure action, while also referencing the broader 12.3 billion won unrecovered after the incident; this does not materially undermine the claim, but suggests the current legal step may focus on a subset of the total loss.