OBI:Cessation of all Point Card Functionalities for Singapore-based Accounts

DearValuedUsers,

FollowingHuobiGlobal’s(“Huobi”)announcementofthe?retirementofSingapore-basedusers,HuobihassinceceasedthereceivingfunctionalityofpointcardsheldbySingapore-basedusers.?Furthertothis,Huobiwillbeceasingallfunctionalitiesofthesepointcardsat?08:00(UTC)onApr14,2022andrepurchasingthemfromusers.HuobiwilltakeascreenshotofallSingapore-basedusers’pointcardsat?16:00(UTC)onApr14,2022?(the“Screenshot”)andbasedontheScreenshot,userswillreceiveUSDTfortherepurchaseoftheirpointcardsintheirparentexchangeaccount.Detailsareasfollow:

LevelField宣布收購Netshares Financial Services并尋求5000萬美元融資:金色財經報道，新的銀行平臺 LevelField Financial 宣布已收購受美國證券交易委員會 (SEC) 監管的經紀交易商 Netshares Financial Services。根據美國證券交易委員會的文件， LevelField在今年年初籌集了兩輪種子輪，目前正在籌集 5000 萬美元。該公司創始人格蘭特在確認這一輪融資時稱，希望在 9 月份結束，部分資金將用于收購。[2022/9/2 13:03:37]

ForpointcardsthatwerepurchaseddirectlyfromHuobi,HuobiwillverifythepurchaserecordsandrepurchasethepointcardsaccordingtotheoriginalpurchasepricesinUSDT.Forpointcardsthatusersreceivedfromotheraccounts,Huobiwillrepurchasethepointcardsatmarketprice(witha30%discount)inUSDT.Fortime-limitedpointcards(whichcannotbetransferred)thatuserspurchaseddirectlyfromHuobi,HuobiwillverifythepurchaserecordsandrepurchasethepointcardsaccordingtotheoriginalpurchasepriceinUSDT.Fortime-limitedpointcards(whichcannotbetransferred)thatusersearnedfromHuobiactivitiesandcampaigns,Huobiwillrepurchasethepointcardsatmarketprice(witha30%discount)inUSDT.?

分析：Nomad攻擊者利用合約process函數進行提取:金色財經消息，北京時間8月2日中午，成都鏈安鏈必應-區塊鏈安全態勢感知平臺輿情監測顯示，跨鏈通訊協議Nomad遭遇攻擊，成都鏈安安全團隊現將解析結果分享如下，通過被攻擊合約（0x88a69b4e698a4b090df6cf5bd7b2d47325ad30a3）的轉賬交易看到，許多地址都進行了攻擊。通過找到一筆相關交易，可以到看到攻擊者利用了（0xb36f6479b1aa5582ce862bfb6eb94591e1b0e0b977188c2e8ca85699efcd6183）合約中的process函數進行提取。

在process函數中，可以看到合約對_messageHash進行了判斷,而輸入的messages[_messageHash]為0x000000....時，相當于任何未使用的hash，都可以判斷通過。然后跟進acceptableRoot函數，因為_root設置為零（x000000....）,而confirmAt[_root]等于1，導致判斷恒成立，攻擊者就能提取資金。成都鏈安鏈必追平臺將對被盜資金進行實時監控。[2022/8/2 2:53:05]

Whendeterminingtheoriginalpurchasepriceofthepointcards,Huobideemsthatpointcardswiththelower/lowestoriginalpurchasepricewereusedfirst.

VoiceStreet將推出電競戰隊成員定制版Daffy Panda NFT形象:10月11日消息，音樂NFT平臺VoiceStreet宣布與電子競技俱樂部“天霸”達成合作，將以天霸戰隊5位隊員的形象來創作五款定制版的DaffyPanda熊貓虛擬形象。DaffyPandaGangingUp是一款基于音樂游戲來發的限量版NFT系列。天霸電子競技俱樂部是由國內藝人陳赫、爽全聯合創辦的電子競技戰隊，藝人鹿晗也是該戰隊的電競合伙人。[2021/10/11 20:20:12]

Example:

UserApurchased10pointcardsat1USDTeachonJan2022.UserAthenpurchased10pointcardsat1.5USDTeachonFeb2022.At16:00(UTC)onApr14,2022,UserAhad10pointcardsremaining.HuobiwilldeemtheoriginalpurchasepriceofUserA’sremaining10pointcardstobe1.5USDTeach.

區塊鏈公司Borderless Services或將收購《福布斯》:專注于區塊鏈技術的投資工具公司Borderless Services或將收購《福布斯》。消息人士稱，如果要收購《福布斯》，Borderless Services將成立一個新的管理團隊，并推出諸如“福布斯”數字錢包之類的加密貨幣產品，用戶可以在其中管理數字貨幣。（FoxBusiness）[2021/4/30 21:13:30]

Usersfromotherunrestrictedcountriesorregionswillnotbeaffected.

Pleasehandleyourdigitalassetswithcareandkeepthemsafe.KindlynotethatanyinformationreceivedviaphonecallsortextmessagestoprovideguidanceonhowtowithdrawyourdigitalassetsfromHuobiarenotgenuineandarelikelytobeascam.Donotclickonanylinkscontainedinanyunfamiliartextmessagesoremails,anddonotprovideyouraccountinformation,SMSverificationcodesandotherimportantinformationtothirdparties.

99Ex SpaceStation X 第二期項目DAC超額預約534%:據99Ex官方消息，其打新銷售平臺“SpaceStation X”第二期項目 DAC 已結束認購，參與認購人數5630人，半小時內超額預約534%。并且DAC將于近日正式上線99Ex，具體時間關注99Ex官方公告。

據悉，但丁密碼DAC基于蟻群算法的啟迪，采用改良優化而得的排序加權算法，作為共識算法的基本運行邏輯，目的是打造一個完備的區塊鏈金融基礎設施平臺。99Ex是一個基于區塊鏈技術應用的多語言創新數字資產交易平臺，由OK CAPITAL、科銀資本、連接資本、鏈興資本戰略投資，累計注冊用戶近百萬，日均交易用戶突破20萬。[2020/6/18]

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April1,2022

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