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Its first core concept is the self-certifying identifier: an identifier derived directly from cryptographic keys, with no registrar granting the identity.",[176,183,184,187],{},[141,185,186],{},"Thomas Mayfield — signed and verifiable events."," Critical actions, such as creating an identifier or rotating its controlling keys, are signed and chained into a tamper-evident log that anyone can replay and verify without phoning home to a central authority.",[176,189,190,193],{},[141,191,192],{},"Thomas Mayfield — portable trust and AIDs."," KERI's combination of concepts enables truly portable trust. In KERI, the identifier is an autonomic identifier (AID), and its authority comes from the keys the controller made.",[176,195,196,199],{},[141,197,198],{},"Ryan Hansen — KERI's canonical core."," The core of KERI is keys, key events, and the Key Event Log that keeps track of those events. Other ecosystem components support that foundation.",[176,201,202,205],{},[141,203,204],{},"Thomas Mayfield — transport agnostic."," KERI does not depend on one transport. It can run over HTTP, Bluetooth, NFC, or other transports, and it is interoperable across wallets and agents.",[176,207,208,211],{},[141,209,210],{},"Thomas Mayfield — pre-rotation."," KERI commits to a future key set before it is needed. If current signing keys are stolen, an attacker cannot forge a valid rotation event because they do not have the committed next keys.",[176,213,214,217],{},[141,215,216],{},"Samuel Smith — authentication and decentralized key management."," KERI is about proving control of an identifier, and it is designed as decentralized key management infrastructure that can scale for the web.",[155,219],{},[158,221,223],{"id":222},"quick-quizzes","Quick quizzes",[225,226],"quiz-question",{"name":227,"question":228,":options":229,"correct":146,"explanation":230},"keri-quiz-1","What does KERI stand for?","['Key Event Receipt Infrastructure', 'Key Exchange Registry Interface', 'Known Entity Resolution Infrastructure', 'Key Event Recovery Index']","Thomas Mayfield spells out the acronym: KERI stands for Key Event Receipt Infrastructure. The name points to KERI's focus on key events, receipts, and verifiable infrastructure for identifiers.",[225,232],{"name":233,"question":234,":options":235,"correct":236,"explanation":237},"keri-quiz-2","What is a self-certifying identifier in KERI?","['An identifier granted by a central registry', 'An identifier derived directly from cryptographic keys', 'An identifier stored only on a blockchain', 'An identifier verified by a password reset service']","An identifier derived directly from cryptographic keys","In KERI, an identifier's authority comes from the cryptographic keys the controller generated. No registrar or centralized identity provider has to issue the identifier.",[225,239],{"name":240,"question":241,":options":242,"correct":243,"explanation":244},"keri-quiz-3","How can others verify a KERI identifier without phoning home to a central authority?","['By replaying the same tamper-evident event log', 'By checking a government registry', 'By asking the original wallet vendor', 'By querying a shared blockchain validator set']","By replaying the same tamper-evident event log","KERI records critical identifier events in a signed, chained log. Verifiers can replay that log and independently check the resulting state, so verification does not depend on a central repository.",[225,246],{"name":247,"question":248,":options":249,"correct":250,"explanation":251},"keri-quiz-4","Why is pre-rotation important in KERI?","['It makes identifiers expire every day', 'It commits to future rotation keys before they are needed, enabling recovery if current signing keys are compromised', 'It stores private keys with witnesses', 'It forces every identifier update onto a blockchain']","It commits to future rotation keys before they are needed, enabling recovery if current signing keys are compromised","With pre-rotation, an AID commits to a hash of its next key set. Those next keys remain offline until rotation, so an attacker who steals current signing keys cannot forge a valid rotation event.",{"title":253,"searchDepth":254,"depth":254,"links":255},"",2,[256,257,258],{"id":160,"depth":254,"text":161},{"id":170,"depth":254,"text":171},{"id":222,"depth":254,"text":223},true,"2026-06-29","What Key Event Receipt Infrastructure (KERI) is and why it enables portable, verifiable digital identity.","md",null,{},7,{"title":92,"description":261},"pQX77InsXm3-9hydnuz4tWd5pYi8YvacrTJSRVdFAtU",[269,271],{"title":88,"path":89,"stem":90,"description":270,"children":-1},"What a Key Event Log (KEL) is, how it works, and why KERI uses one instead of a shared blockchain.",{"title":96,"path":97,"stem":98,"description":272,"children":-1},"A one-minute promo for policymakers working in identity and privacy — why KERI, and why the decision can't wait.",1791282196220]