科技科技時(shí)尚區(qū)塊鏈PPT模板 Technology-Tech Fashion Blockchain

TechnologyFashionBlockchainTemplateBusinessPlan·BusinessSummary·ScienceandTechnologyLaunch·BlockchainWorkshopDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.Speaker:01

|IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo02

|BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo03

|DataDreamwhatyouwanttodream;gowhereyouwanttogo04

|CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogoCONTENTPART.01IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.TraditionalpaymentmethodsAlmostalltradeontheInternetrequirestheuseoftrustedthird-partycreditagenciestoprocesselectronicpaymentinformation.Suchsystemsarestillinternallyconstrainedby"Credit-basedmodel"。BusinessThird-partyagenciesConsumersDigitalsignatureRecordtheledgerIntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BlockchainpaymentsystemBlockchaintechnologyisthebasictechnologytobuildtheencryptiontransmissionofBitcoinblockchainnetworkandtransactioninformation.Itisbasedontheprincipleofcryptographyratherthancredit,sothatanyagreedpartypaysdirectly,thuseliminatingtheneedfortheparticipationofthird-partyintermediaries.BusinessBlockChanceConsumersDigitalsignatureDigitalsignatureIntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BlockchaindefinitionFromadataperspective,blockchainisadistributeddatabasethatisalmostimpossibletochange.Thedistributionhereisnotjustadistributedstorageofdata,Distributedrecordsasdataarealsoreflected(I.e.maintainedbysystemparticipants)。IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BlockchainfeaturesOpenconsensusAnyonecanparticipateinablockchainnetwork,eachdevicecanactasanode,eachnodeallowsforacompletecopyofthedatabase.Nodesarebasedonaconsensusmechanismthatjointlymaintainstheentireblockchainthroughcompetitivecomputing.Eithernodefails,Theremainingnodesarestillfunctioning.Gotothecenter.Theblockchainiscomposedofmanynodestoformanend-to-endnetwork,thereisnocentralizeddeviceandmanagementorganization.Dataexchangebetweennodesisverifiedbydigitalsignaturetechnologywithouttrustingeachother,aslongasitfollowstheestablishedrulesofthesystem,Therecanandcannotbeandcannotbespoofedbetweennodestoothernodes.OpenandtransparentTherulesoftheopenandtransparentblockchainareopenandtransparent,andalldatainformationispublicsothateverytransactionisvisibletoallnodes.Non-tamperabletraceabilityModificationstoadatabasebyasingleorevenmultiplenodescannotaffectthedatabasesofothernodesunlesstheycancontroltheentirenetworkbeyond51%nodesaremodifiedatthesametimePART.02BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.DigitalsignatureDigitalsignatureDigitalsignaturesinvolveahashfunction,thesender'spublickey,andthesender'sprivatekey.Digitalsignatureshavetwoeffects.,Oneistobeabletodeterminethatthemessagewasindeedsignedbythesenderandconcurrent.Second,digitalsignaturescandeterminetheintegrityofmessages.HowitworksWhenamessageissent,thesendergeneratesamessagesummaryfromthemessagetextusingahashfunction,,andthenencryptthesummarywithyourownprivatekey,Theencryptedsummaryissenttothereceiverasadigitalsignatureofthemessageandthemessage,whichfirstcalculatesthemessagesummaryfromtheoriginalmessagereceivedusingthesamehashfunctionasthesender.BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.SHA256OneSeedballsHashEncryptionalgorithmforvaluesHowitworksEnteranystringofdataintotheSHA256willgeta256BitHashValue(Hashvalue)。Itscharacteristics:Thesamedataentrywillgetthesameresult.Enterdatawithonlyaslightchange(Likea1It'sbecome0)BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.Merkle

TreeAhashbinarytree,Useittoquicklyverifytheintegrityoflarge-scaledata.IntheBitcoinNetwork,MerkleThetreeisusedtosummarizealltransactioninformationinablockandultimatelygenerateauniformhashvalueforalltransactioninformationinthatblock,ChangesintheinformationofanytransactionintheblockwillmakeMerkleThetreechanged.Non-leafnodesvalueThecalculationistocombineallthechildnodesofthenode,ThenmakeacombinationofresultshashCalculatedhashvalue。BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BitcoinBitcoin(BitCoin)TheconceptwasoriginallywitsbyBenCongin2009Yearproposed,DesignandreleaseopensourcesoftwarebasedonNakamoto'sideasandconstructitP2pInternet.BitcoinisakindofP2pTheformofthedigitalcurrency.Point-to-pointtransmissionmeansadecentralizedpaymentsystem.PART.03DataDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.DataDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BlockchainBlockchainorganizesdataasblocks.Alloftheboxer'stradingdisciplineisstoredintheonlyblockchainonthewebintheformofatransactionslipDataDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.RecordtransactioninformationinlocalmemoryintoablockprincipalinablockprincipalGeneratealltransactioninformationinthisblockMerkleTree,PutMerkleThevalueoftherootofthetreeissavedintheblockheadPutthedataoftheblockheaderofthepreviousblockjustgeneratedthroughSHA256AlgorithmgeneratesahashvaluefilledintotheparenthashofthecurrentchunkSavethecurrenttimeinthetimestampfieldThedifficultyvaluefieldadjuststotheaveragebuildtimeofthechunkovertimetocopewiththechangingoveralltotalcalculationoftheentirenetworkDataDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.VersionNo.:Indicatetheparentblockhashvalueoftherelevantversioninformationofthesoftwareandprotocol:ReferencedintheblockchainThehashvalueoftheparentblockhead,throughwhicheachblockisconnectedtothebeginningandend,formstheblockchain,andthisvalueplaysavitalroleinthesecurityoftheblockchainMerkleRoot:Thisvalueiscalculatedbythehashvalueofalltransactionsintheblockbodyandthentwoortwohashsintheblockbody,PrimarilyusedtoverifythatatransactionexistsinthisblockTimestamp:Recordwhentheblockwasgenerated,AccuratetosecondsDifficultyvalue:DifficultyobjectivesfortherelevantmathproblemsinthisblockRandomnumber(Nonce):RheblockPART.04CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.ProofofworkloadTheblockheadercontainsarandomnumber,Makestherandomhashvalueoftheblockappearthedesired0Number.Thenodetriesrepeatedlytofindthisrandomnumber,whichbuildsa:Workloadcertificationmechanism.Theessenceoftheworkloadcertificationmechanismis-CPUonevote,"most"Thedecisionisexpressedasthelongestchain,becausethelongestchaincontainsthemaximumamountofwork.IfmostoftheCpuForhonestnodecontrol,thenthechainofhonestywillbeextendedasquicklyaspossible,andbeyondtheothercompetitivechains.CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.ForkMorethanonenodeonthenetworkcancalculatearandomnumberoverthesameperiodoftime,i.e.multiplenodesbroadcasttheirrespectivepackagedtemporaryblocks(alllegal)onthenetwork.BLOCK1BLOCK2BLOCK3BLOCK4BLOCK5BLOCK6Ifanodereceivesmultiplesubsequenttemporaryblocksforthesamepre-continuationblock,thenodeestablishesabranchonthelocalblockchain,withmultipletemporarychunkscorrespondingtomultiplebranches.Thedeadlockwillnotbebrokenuntilthenextproofofworkloadisdiscovered,andoneofthechainsisproventobealongerone,sothenodesworkingontheotherbranchchainwillswitchcampsandstartworkingonthelongerchain.Otherbrancheswillbecompletelyabandonedbythenetwork.CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.DoubleFlowerDoublespend,ordoublepayment,referstoanattackerusingthesamemoneyfordifferenttransactionsalmostatthesametime.Eachtimeanodeatta