TechnologyFashionBlockchainTemplateBusinessPlan·BusinessSummary·ScienceandTechnologyLaunch·BlockchainWorkshopDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.01|IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo02|BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo03|DataDreamwhatyouwanttodream;gowhereyouwanttogo04|CoreissuesDreamwhatyouwanttodream;gowhereyouwanttogoCONTENTPART.01IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.IntroductiontoblockchainDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.TraditionalpaymentmethodsAlmostalltradeontheInternetrequirestheuseoftrustedthird-partycreditagenciestoprocesselectronicpaymentinformation.SuchsystemsarestillinternallyconstrainedbyCredit-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.MerkleTreeAhashbinarytree,Useittoquicklyverifytheintegrityoflarge-scaledata.IntheBitcoinNetwork,MerkleThetreeisusedtosummarizealltransactioninformationinablockandultimatelygenerateauniformhashvalueforalltransactioninformationinthatblock,ChangesintheinformationofanytransactionintheblockwillmakeMerkleThetreechanged.Non-leafnodesvalueThecalculationistocombineallthechildnodesofthenode,ThenmakeacombinationofresultshashCalculatedhashvalue。BlockchainNetworkDreamwhatyouwanttodream;gowhereyouwanttogo;bewhatyouwanttobe,becauseyouhaveonlyonlyonlylife.BitcoinBitcoin(BitCoin)TheconceptwasoriginallywitsbyBenCongin2009Yearproposed,DesignandreleaseopensourcesoftwarebasedonNakamoto'sideasandconstructitP2pInternet.BitcoinisakindofP2pTheformofthedigitalcurrency.Point-to-pointtransmissionmeansadecentralizedpaymentsystem.PART.03DataDreamwhatyouwanttodream;gowherey