Luyini ubuchwepheshe be-blockchain?
Context:I-blockchain i-ledger esatshalaliswayo enezinhlu ezikhulayo zamarekhodi (amabhulokhi) axhumene ngokuphepha ndawonye ngama-hashes we-cryptographic. Ibhulokhi ngayinye iqukethe i-hash ye-cryptographic yebhulokhi yangaphambilini, isitembu sesikhathi, nedatha yokuthengiselana (imelwe ngokujwayelekile njengesihlahla se-Merkle, lapho ama-node wedatha amelwe ngamaqabunga). I-timestamp ifakazela ukuthi idatha yokuthengiselana yayikhona lapho kudalwa ibhulokhi. Njengoba ibhulokhi ngayinye iqukethe ulwazi mayelana nebhulokhi yangaphambilini, empeleni zakha uchungechunge (qhathanisa isakhiwo sedatha yohlu oluxhunyiwe), lapho ibhulokhi ngayinye eyengeziwe ixhumanisa naleyo engaphambi kwayo. Ngenxa yalokho, ukuthengiselana kwe-blockchain akunakuguqulwa ngoba, uma sekurekhodwe, idatha kunoma iyiphi ibhulokhi ayinakuguqulwa emuva ngaphandle kokuguqula wonke amabhulokhi alandelayo.
Ibhukwana elihlukanisiwe, elihlukanisiwe eliqopha ngokuphephile nangokusobala ukuthengiselana liyachazwa.  Ubuchwepheshe be-blockchain baqala ukwethulwa lapho kwethulwa i-Bitcoin ngo-2008 futhi kusukela lapho sekusetshenziswe ezinhlotsheni eziningi zezicelo.  Imininingwane yobuchwepheshe: I-blockchain ivikela futhi iqinisekise ukuthengiselana kusetshenziswa i-cryptography ne-hashing, futhi iqinisekise lokho kusetshenziswa amasu okuvumelana.  Izicelo: Ngaphezu kwezimali ezifihliwe, i-blockchain isetshenziswe ekuphathweni kokuthengwa kwempahla, izinhlelo zokuvota, izinkontileka ezihlakaniphile, nakwezinye izindawo.  Ukulinganiselwa: I-blockchain igxekwa ngokuthi isebenzisa amandla amaningi nangokuthi inezinkinga zokulinganisa.