当下最热门的App是哪个?
估计不少会说Clubhouse,这个App目前估值达到10亿美元,在不到一年的时间里就成为独角兽。
据悉,Clubhouse由PaulDavison和前谷歌员工RohanSeth共同开发,在去年4月上线,目前采用邀请制注册,已拥有超过200万用户。
2月1日,埃隆·马斯克首次登录了Clubhouse,并参加了一场a16z聊天室问答活动。与他一起聊天的嘉宾,还包括知名风投公司A16Z的联合创始人MarcAndreessen、知名天使投资人SriramKrishnan等。
在2月1日的分享中,马斯克分享了有关比特币及区块链、GameStop、Robinhood等热门话题。
比特币与狗狗币
关于比特币,马斯克提到2013年,一个朋友用比特币给他送了一块蛋糕。
他表示:"我应该在8年前就买它,在这一点上,比特币是个好东西。我是一个支持者。我加入的时间比较晚,但我支持它。"
马斯克另外提到,很明显比特币正在被传统金融界接受。
"我对其加密他货币没有什么意见。"但他表示狗狗币最开始是作为MEME来取笑加密货币的,但"命运就是喜欢讽刺"。
而在马斯克分享的观点中,他提到自己非常喜欢混乱。"最有趣的结果是最有可能的。"他说最讽刺的结果是狗狗币成为未来的通用货币。
不过马斯克另外提到他之前开了一个关于比特币的玩笑,很快他的Twitter账户被封了。
马斯克把他带回来:“人们要求答案,他们想知道真相。”
Gamestop与Robinhood
戏剧性转折,随着RobinhoodCEO——VladTenev的到来出现。
马斯克直接问Vlad:来告诉我们到底发生了什么,是不是有什么内幕?
马斯克所指的事情,是上周“Gamestop事件”之后,Robinhood宣布对包括游戏驿站GameStop和电影院线AMC等多支股票限制交易,仅允许用户卖出股票,并调高了对部分个股的保证金的要求。
此举令Robinhood遭到集体诉讼。用户要求Robinhood赔偿因交易中断所带来的损失。Robinhood在周五一度放松限制。
Vlad对此的回复道:上周四凌晨3:30,我们的运营团队从NSCC(国家证券结算公司)那里收到了一份文件。这就是Robinhood的用武之地。我们必须根据一些因素向NSCC注资,包括某些证券的交易活动的波动性。所以,他们给了我们一份存款文件,要求大约30亿美元,你知道,这比通常的数额高出了一个数量级。”
马斯克对Vlad的回复似乎更加感兴趣,很专业的追问了一系列问题,包括“这30亿美元是怎么算出来的?”、“凌晨3:30收到邮件,很可疑啊”、“有人要挟你吗?”……
对这样穷追不舍的盘问,Vlad最后只能草草回复道:有点阴谋论了。
附马斯克Clubhouse分享听写全文:
MuskinitiallytalkedaboutgoingtoMarsandsaiditwaslikelytobe“hard”fortheearlypioneers,butthattheendeavorultimatelywouldbeamatterofkeepingthe“candleofcivilizationaliveinthedark”.
Askedifhebelievedinaliens,hesaidtherewasn’tasinglepieceofconclusiveevidencefortheexistenceofaliens,althoughit’s“quitepossible”thereissuchathingasAlientechnology,atleastata“7/11”level,andajokedthattheevidencesofarsuggeststheymightbeatthe“500Megapixelcamera”or“atleastiPhone6level”.
HesaidhiskidswerenotquiteintotheideaofgoingtoMars.
Askedaboutmemesonlinehequipped:“Hewhocontrolsthememescontrolstheuniverse”andit’saboutwhat“influencesthezeitgeist”.Memesareacomplexformofcommunication,hesaid:unlikepictures,memesare“10,000wordsnot1,000words”.Theyareaspirationalandfunny.“Ilovememes,theycanbeveryinsightful,”headded.
推特前高管起诉马斯克拖欠160万美元的法律费用:7月14日消息,多名推特前高管表示,推特仍拖欠他们160多万美元的法律费用,他们希望法官命令马斯克立即支付这笔费用。他们表示,这些法律费用是在他们运营推特期间因诉讼和政府对公司活动的调查而产生的。这些前高管声称,推特拒绝支付这笔款项违反了其规章制度。当马斯克去年以440亿美元收购推特时,这些高管被解雇。据悉,推特面临多项诉讼,被指控未能支付拖欠前员工、供应商和房东的数百万美元。[2023/7/14 10:54:32]
DoeshetrytosoundcrazyonTwitter?“IstartedcrazyonTwitter,”hejoked.
Hesaidhedoesn’tfollowmemeshimself.Instead,hehas“memedealers,”friendswhopickoutandsendhimmemestheythinkhewouldlike.
HetalkedabouthiscompanyNeuralinkandalsoaddedthatTeslahadoneofthestrongestAIteamsintheworld.
WithAI,it’sabout“howdowestayrelevant”andatleast“stay‘alongfortheride’inthegoodscenario”andcoupleourmindswithAItoharnessitspower.
“Peoplearealreadyacyborg,”hesaid,referringtoatertiarylayerintheformofsmartphones.Thebit-rateofustypingintoaphoneis100bits.Soit’sliketryingtotalktoatree,foroursmartphones.Sowithadirectneuralinterface,weincreaseitbyahugemagnitude,andalsospendlongertimewithahighermagnitudeofprocessingbecauseofthis.
Youcandecideifyouwanttobearobotoraperson.Butwhenyouwakeinthemorningyouwouldn’thavetobethesame‘mind’asyouwereyesterday.It’sanalogoustoavideogame,notunlikethe“AlteredCarbon”Netflixseries.
ThereareprimitiveversionsofthisintheNeuralinkidea,withtinywiresgoingintoyourbrain.
HeclaimedNeuralinkwillbereleasingnewvideosinamonthorso,suchasofamonkeyplayingvideoswiththeirmind.Hedidn’tappeartocommentontheethicsbehindthis(oneofthemanytimesMuskwasnotchallengedinwhathesaid).Thevalueoftheearlyimplantwillbeenormousandoutweightherisks,ishistake.
Themoderatorsaskedhimabouteducating5-year-olds:whatshouldtheylearnthesedays?
Musktalkedabouthowvideogamesengagechildren,butexplaining“thewhy”wasimportant.
“Weareprogrammedtoforgetthelow‘probabilityofthings’iftheyaren’trelevant,”hesaid.Forexample,takingapartanengineandputtingittogether.Weneedtools,soweunderstandtherelevance.It’sbetterthantakinga“courseonwrenches”.
Hewasasked“whyaretherenotmoreElonMusks”?Hishard-knocksresponse:“Ifyouneedencouragingwords,don’tdoastartup.”
马斯克否认收购曼联,相关Token CITY涨幅收窄至2.9%:8月17日消息,马斯克在社交媒体上澄清表示,收购曼联系推特上的一个旧梗,不会购买任何球队。据CoinGecko数据显示,ManchesterCity粉丝Toke CITY此前一度涨至6.87美元,目前价格为6.51美元,24小时涨幅收窄至2.9%。[2022/8/17 12:30:38]
Healsogavehistwobitcoinsoncrypto.
Afriendsenthimasliceofcakeusingbitcoinin2013.“Ishouldhaveboughtit8yearsago.”hesaid.“AtthispointBitcoinisagoodthing.Iamasupporter.Iamlatetotheparty,butIamasupporter.”
HesaiditwasclearBitcoinwasgettingbroaderacceptancebythefinancialworld.“Idon’thaveastrongopiniononothercurrencies.”Dogecoin,hesaid,wasmadeasjoketomakefunofcryptocurrencies,but“fatelovesirony.”
Anditalsoseemstolovechaos,inMusk’svioew.“Themostentertainingoutcomeisthemostlikely,”hesaid.ThemostironicoutcomewouldbeDogecoinbecomingthecurrencyofthefuture.
Butmaybenotifsomesocialplatformshaveanythingtodowithit.HesaidhemadeajokeaboutBitcoinandhisTwitteraccountgotlocked.
AttentionthenturnedtohiselectriccarcompanyTesla.Thetargetistomake20millioncarsandtrucksperyear.Thisisawild—andagain,veryunchallenged—statement:recallthatin2020itmadelessthan500,000cars,andevenlesstrucks.Thatalongroadtotravel,inotherwords.
Healsohadsomethoughtsonself-driving.Autonomousvehiclescouldreachthepointwhereyouwouldrelyonthemforasignificantamountoftimeintheaweek.Autonomouscarswouldtakeoverforroughlyathirdofthehoursinaweeks,so60hoursinsteadof12,eventually,inhisprojection.(Again,veryblueskystatementshere,astherearenofullyautonomouscarsinfreeuseonroadsatthispoint.)
Healsohadsomethoughtsonworkinthepandemicandpost-pandemicworld.WorkingremotelyonZoomhasbeentrickyforhim,hesaid.“Fearisnotthemind-killer,contextswitchingthemind-killer,”hesaid,ofhavingtoswitchbetweendisparatesubjectsoncalls.
WouldhestartanothercompanytoaddressCovid-19insomeway?HejokedthatheprettymuchhashishandsfullwithTesla,SpaceX,TheBoringCompanyandotherstodate.
Hetalkedaboutthehugeadvancesinvaccinetechnology,suchastheMRNAtechwhichmadetheCovid-19vaccinepossible.Heseemedverybullishaboutthevaccine.
特斯拉披露收到SEC传票,涉及马斯克公开言论:2月7日消息,特斯拉向美国证券交易委员会(SEC)递交的10-K年报文件显示,2021年11月16日,美国证交会向公司发出传票,要求特斯拉提供有关履行2018和解案涉及的管理流程。注:马斯克2018年时曾在社交媒体上表示试图将公司私有化,随后遭到美国SEC的证券欺诈指控。2018年9月双方达成和解协议,特斯拉需要对马斯克的公开表态进行监管,上文提到的传票日期恰好在马斯克去年发起“抛股投票”后不久。[2022/2/8 9:36:29]
Whilethenewstodayisaboutthethedearthofsupplyinvaccines,itseemslikehethinksthespaceforCovid-19medicines,andspecificallyinoculationsagainstit,isacrowdedmarketlongerterm.“Thereisgoingtobeanavalancheofvaccine,”cominghesaid.“Iguaranteeyou‘it’willbethrownawaythisyear.”
Therecouldbeanopportunityforproducingtheseinhiscurrententerprises,hehinted.“TheTeslamachinecanmakeabazilliondosessuperfast,”heclaimed.(Again,nochallengeorfollowuponthatone,either.)
Allinall,hemadehispoisonclearonvaccines:“Iamnotananti-vaxxer,Iamapro-vaxxer.”
Thenaturntohisfirstyearsintechnology.InSiliconValleyintheearlydays,hesaid,hehadtoaskhimself:“DoIwatchtheinternetbeingbuiltinfrontofmeordoIgetinvolved?”
Still,herecalledbeing“tooshy”tospeaktoanyoneinthelobbyofNetscape.
Thenhetriedtocode.Hewrotethefirstmapsanddirectionsontheinternet.Byhand.TheWebsiteonlyworkedduringthenightashewasusingtheserveronthecomputerduringthedaytocode.
MarcAndreessen,whowasalsoontheclubhousesession,thenquippedthathewouldgetajobthenexttimehehangsoutinthelobbyofoneofhiscompanies.
Muskgaveahat-tipto‘TheLastKing’andCobraKaiforhisstreamingenjoyment.TheExpanse’splotlinessometimesseemtoofantasticaltohim,hesaid.HewasrecommendedDevs,MythicQuestandRavensBanquetbymoderators.Tenetwas“prettygood”too,hesaid.Didheunderstandit?“Ifyouthinktoohardaboutit,it’snotgoingtomakecompletesense,butit’sagoodmovie.”
HisknowledgeofTheHitchhikersGuidetotheGalaxy,remainsimpressivelyintact.
Then,abigswitchingofthegears,as“VladTheStockImpaler”wasbroughtintotheClubhouseroomtotalkabouttheGameStopphenomenon.
“Vlad”—morespecificallyVladTenev,CEOofRobinhood—beganwithan,attimes,stumblingattempttoexplainwhathappenedlastweekbutwaseventuallyinterrogatedmorethoroughlybyMusk.
马斯克相信有证据指向萨博就是中本聪:12月30日消息,13年前首次提出比特币概念背后的真实人物(化名为中本聪)是谁?马斯克试图解开这一迷团。在一个播客中,马斯克怀疑这一人物是计算机科学家尼克·萨博,他在1998年提出了一种去中心化的数字货币“比特黄金”(bit gold),被广泛视为比特币的先驱。马斯克相信有证据指向萨博就是中本聪。马斯克补充说,“萨博自称不是中本聪,但我不确定这是不是真的。但他似乎是比特币背后创意的最大推动者。”多年来,人们曾多次试图揭开中本聪的面具,萨博是十几位有可能的候选人之一。但萨博一再否认他就是“中本聪”,一些理论家坚称,“中本聪”这个假名背后隐藏的不止一个人。(金十)[2021/12/30 8:14:27]
Muskatthispointturnedinterviewer,andwe’reheredoingabitmorecomprehensivetranscribingbecauseit’sworthkeepingTenev’swordsinfull.
“Allright,telluswhatreallyhappened.Giveustheinsidescoop,”Musksaid
“Thishasbeenaverysurrealweekendandweekforme,”saidVlad.
Vladsaid“oneofthereallygreatthingsisallthepeople“comingoutofthewoodwork”tooffersupportforthecompanytoofferadvice.HesaidthiswashisfirsttimeusingClubhouse.Hethenmadeajokeyremarkaboutbeinganadherentofthe“simulationhypothesis”.
Muskbroughthimback:“Thepeopledemandananswerandtheywanttoknowthetruth.”
Vladsaid:“Sothere’sanintroducingbroker-dealercalledRobinhoodFinancial,andthatbasicallyistheappthatyouknowandlove,itprocessestrades.You’reacustomerofRobinhoodFinancial.Thenthere’saclearingbroker-dealer,RobinhoodSecurities,thatclearsandsettlesthetrades.AndthenwehaveRobinhoodCrypto,whichisourCryptobusiness…Allofthesearedifferententitiesthataredifferentlyoperated.So,basicallyWednesdayoflastweek.Wejusthad,youknow,unprecedentedvolume,unprecedentedloadonthesystem.Alotofthese,youknow,so-calledmemestockswere,youknow,goingviralonsocialmedia,andpeoplewerepeoplearejoiningRobinhoodandtherewasalotofnetbuyactivityonthem.”
HesaidRobinhoodbecamenumberoneontheiOSAppStoreandprettycloseifnotnumberoneonGooglePlaystore.
“ThursdaymorningI’msleeping.At3:30amPacific,ouroperationsteamreceivesafilefromtheNSCC,whichistheNationalSecuritiesClearingCorporation.So,basicallyasabrokerasaclearingbroker.AndthisiswhereRobinHoodSecuritiescomesin.WehavetoputupmoneytotheNSCCbasedonsomefactorsincludingthingslikethevolatilityofthetradingactivityintocertainsecurities.Andthisisistheequitiesbusinesssoit’sbasedon,stocktradingandnotoptionstradingoranythingelse.
马斯克:Doge比BTC和ETH的交易成本低:特斯拉CEO埃隆·马斯克发推特表示,BTC和ETH追求的是多层交易系统,但底层交易速度慢,交易成本高。Doge有一个优点,即通过充当第二层的交易所来最大化提升基础层交易率并最小化交易成本。[2021/7/9 0:39:31]
So,theygiveusafilewiththedepositandtherequestwasaround$3billion,whichis,youknow,aboutanorderofmagnitudemorethanwhatittypicallyis.”
Musk:Thisisnotanunprecedentedincreaseindemandforcapital.Whatformulathattheyusetocalculatethat”
Vlad:Justtogivecontext,Robinhoodupuntilthatpointhasraisedaround$2billionintotalventurecapital.Upuntilnow,soit’sabignumber,like$3billionisalargenumber,right.So,basically,thedetailsare,wedon’thavethefulldetails,it’salittlebitofanopaqueformula,butthere’sacomponentcalledtheVARofit,whichisvalueatrisk.Andthat’sbasedonkindofsomefairlyquantitativethingsalthoughit’snotfullytransparent.So,therearewaystoreverseengineerit,butit’snotkindofpubliclyshared.
Andthenthere’saspecialcomponent,whichisdiscretionary.Sothatkindofactsasamultiplier,andbasically
Musk:Discretionarymeaninglikeit’sjusttheiropinion”
Vlad:There’sdefinitelymore,morethanjusttheiropinion.
Musk:Everyonewantstoknow,didsomethingshadygodownhere?Itseemsweirdthatyougetasudden$3billiondemand,youknow,at3.30aminthemorning.Justsuddenlyoutofnowhere.
Vlad:Iwouldn’timputeshadinesstoitoranythinglikethatandactuallyyouknowtheNSCCwasreasonable.
Theyworkedwithustoactuallylowerit.So,itwasn’tunprecedentedactivity.Idon’thavethefullcontextabout,youknow,whatwasgoingonintheNSCCmakethesecalculations.
Musk:Isanyoneholdingyouhostagerightnow?
Vlad:Thanksforasking.Butanyways,sothiswasobviouslynerve-racking,andIactuallywasasleepatthispoint,youknow,theoperationsteamwasfieldingthisatthreeo’clock.Andthen,youknow,wegotback,weputourheadstogether.OurChiefOperatingOfficerbasicallysaid,look,let’scallupthehigher-upsattheNSCCandkindoffigureoutwhat’sgoingon.Maybethere’ssomewaywecanworkwiththem.Andbasically,therewasanothercall.Andtheyloweredittosomethinglike$1.4billionfrom$3billion….Butstillahighnumber.
Vladsaidtheteamthenproposedhowtomanagetheriskthroughtheday“markingthesevolatilesstocksthatweredrivingtheactivity,positioningclosingonly.Andthen,ataboutanhourbeforethemarketclosedmarketopened.So,at5.30,orfiveinthemorning,theycamebackandtheysaidokay,thedeposit700million,whichwethendepositedandpaidpromptly.Andthen,everythingwasfine.
So,thatthatessentiallyexplainswhywehadtomarkthesymbols‘positionclosingonly’,andalsowhy,youknow,weknewthiswasabadoutcomeforcustomers…Partofwhat’sbeenreallydifficultisRobinhoodstandsfor,youknow,democratizingaccesstostocksand,yes,wewant,wewanttogivepeopleaccesssowehadnochoiceinthiscase,wehadtoconformtoourregulatorycapitalrequirements.Andsotheteamdidwhattheycouldtomakesurewewereavailableforcustomers.
Musk:Whocontrolstheclearinghouse?
Vlad:It’saconsortium.It’snotquiteagovernmentagency.Youknow,I,Idon’treallyknowthedetailsallthat.But,youknow,andtobefair…therewaslegitimateturmoilinthemarkets.Theseareunprecedentedeventswiththesememestocks,therewasalotofactivity.So,thereprobablyissomeamountofextrariskinthesystemthatwarrants,higherrequirements,soit’snotentirelyunreasonable.
Butwedidoperationalprocessestomakesurethatcustomersthathadpositionscouldselltheiropenpositionsbecauseobviouslyrestrictingsomeone…Wegotalotofquestionsabout‘youhadtorestrictbuying,whydidn’tyoualsorestrictselling?’Andthefactofthematteris,peoplegetreallypissed-offifthey’reholdingstockandtheywanttosellitandtheycan’t.Sothat’scategoricallyworse.Lotsofotherbrokers,Ithink,we’reinthesamesituation.Robinhoodwhowasinthenews,butyoujustsortofheardthisindustry-wide,otherbrokers,werebasicallyrestrictedinthesameexactactivity.
Musk:Soitsoundslikethisorganizationcallsyouupandtheybasicallyhaveaguntoyourhead.Eitheryouputupthismoneyorelse.Basically,whatpeoplearewonderingisdidyousellyourclientsdowntheriver?Ordidyouhavenochoice?Andifyouhadnochoicethat’sunderstandable.Butthen,youknow,we’vegottofindoutwhyyouhavenochoice.Andwhoarethepeoplethataresayingyouhavenochoice?
Vlad:Ithinkthat’sfair.Wehavetocomplywiththeserequirements,financialinstitutionshaverequirements.Theformula,behindtheserequirements…itwouldobviouslybeidealiftherewasalittlebitmoretransparencysowecouldplanbetteraroundthat,buttobefair,wewereabletoopenandserveourcustomersand24hourslater,ourteamraisedoverabilliondollarsincapitalsothatwhenwedoopentomorrowmorningwe’llbeableto,kindof,relaxthestringentpositionlimitsthatweputonthesesecuritiesonFriday.
Musk:Willtherebeanylimits?
Vlad:WellIthinkthere’salwaysgoingtobesometheoreticallimit,wedon’thaveinfinitecapital,right?AndonFriday,therewerelimits.So,there’salwaysgoingtohavetobesomelimit,Ithinkthequestionis,willthelimitsbehighenoughtothepointwheretheywon’timpact99.9-pluspercentofcustomers.Soifsomeoneweretodeposit$100billionanddecidetotradeinonestockthatwouldn’tbepossible.
Musk:Ifyouhadnochoicethenyouhadnochoice.It’sa‘guntotheheadsituation’.That’sunderstandable.
Vlad:Yeah,theseareunprecedentedtimes,andtobefairtothoseguysthey’vebeenreasonable.So,IthinktheonethingthatismaybenotcleartopeopleisRobinhoodisaparticipantinthefinancialsystem.Sowehavetoworkwithallofthesecounter-parties,sowedogetalotofquestionsabout,youknow,‘whydoyouworkwithmarketmakers?’,whyyouworkwithclearinghouses.Verticallyintegrating…Imeanit’shardenoughtobuildanintroducing…clearingbroker-dealer…nottoomanypeoplehavedonethat.Butthefinancialsystemthatallowscustomerstotradesharesissortofacomplexwebofmultipleparties…Everyonesaysitcouldbebetter.Itcouldbeimproved.It’sjustthenecessityoftradingequitiesintheUS,thatyouhavetodoallthesethings.
Musk:TowhatdegreeareyoubeholdentoCitadel?
Vlad:TherewasarumorthatCitadelorothermarketmakerskindofpressuredusintodoingthisandthat’sjustfalse.Marketmakersexecuteourtrades,theyexecutetradesofeverybroker-dealer.Thiswasaclearinghousedecision,anditwasjustbasedonthecapitalrequirements.So,fromourperspective,youknow,Citadelandothermarketmakersweren’tinvolvedinthat.
Musk:Butwouldn’ttheyhaveastrongsayonwhogotputinchargeofthatorganization,sinceit’sanindustryconsortium,notagovernmentregulatoryagency?
Vlad:Idon’thaveanyreasontobelievethat.Ithinkthat’sjustlike,youknow,thenyou’regettingintokindoftheconspiracytheoriesalittlebit.So,Ijusthavenoreasontobelievethatthat’sthecase,youknow.
Musk:Okay.Well,Iguesswe’llseewhathappenswithdirections.Hopefully,thatwasinsightfuloratleastalittlebitentertaining.“Areyounotentertaining?”hesaid.
币海引路人:BTC晚间行情登高后回调把握节点多空皆可为情走势莫测,就像未卜是人生,总有跌宕起伏的时候,交易如同攀爬,只有登上绝顶,才能享受奇观胜景;若遇难而退,中途放弃,只会与机会擦肩而过,在交易中,最重要的就是要敢于出手,面对机会.
1900/1/1 0:00:00关于分布式分类帐技术的新法律规定于2月1日在瑞士生效。实施后,两家本地公司宣布根据新法律发行了第一笔代币化资产.
1900/1/1 0:00:00近日桥水基金的创始人,华尔街著名的对冲基金投资人达里奥发表了一篇最新的文章,详细谈了他对比特币最新的见解。达里奥近年来曾多次谈到比特币,他的观点也从最初的藐视到现在开始逐渐接受,尤其在去年年底他还表示可能错看了比特币的某些方面.
1900/1/1 0:00:00币海引路人:BTC陷入震荡晚间操作策略情走势莫测,就像未卜是人生,总有跌宕起伏的时候,交易如同攀爬,只有登上绝顶,才能享受奇观胜景;若遇难而退,中途放弃,只会与机会擦肩而过,在交易中,最重要的就是要敢于出手,面对机会,果断出击.
1900/1/1 0:00:00链闻消息,DeFi智能投资管理平台DAOVentures宣布将于2月18日在Polkastarter进行DVG代币IDO,Polkastarter上每枚DVG代币价格为0.225美元,每人最高限额为500美元,公开发售总计444.
1900/1/1 0:00:00尊敬的欧易OKEx用户:经过一个月的激烈角逐,欧易OKEx统一账户精英团赛和意见赛的最终结果已经确定,并且平台已完成活动奖励发放,活动奖励以USDT或手续费返佣卡的形式发放.
1900/1/1 0:00:00