Glossary

Admission Policy	Definition
Admission Policy	Admission Policy, also referred to as "Policy".
AML	Anti Money Laundering.
Attestation	A claim in the form of an EIP-712.
Attribute	Attributes are data points which preserve the user’s anonymity by being part of a set, e.g. age > 21 or credit score between 800-850.
Base Rule	#base-rule.
CFT	Countering the Financing of Terrorism.
Credential	On-chain representation of a Wallet meeting PolicyID requirements, at a given time (timestamp).
DeFi	Decentralised Finance.
Genesis Rule	The RuleRegistry creates two Base Rules during initialization. UniverseRule, corresponding to the Universal Set, it contains everything and everyone. EmptyRule, corresponding to the Null Set, it contains no one and nothing. The UniverseRule and EmptyRule are complements.
KYB	Know Your Business.
KYC	Know Your Customer.
KYW	Know Your Wallet.
Operators	Logic linking baseRules together into Rules: union, intersection, complement.
PII	Personal Identifiable Information.
Policy Owner	Administrator of a Policy, more here Policy Owner.
Programme	Custom onboarding flow based on a user's risk profile, as defined by the Policy Owner.
Risk Matrix	Risk framework populated by the Policy Owner which defines the criteria to pass or fail validation under the Rule. The Policy Owner can define red flags to prevent access and/or assign risk scores to attributes to make the decision process as quantitative as possible.
Rule	#rule.
SAR	Suspicious Activity Report.
TradFi	Traditional Finance (in contrast with blockchain-based finance).
User	Also designated as End-User. Individual or company using the Keyring product (see Terms and Conditions for more definitions).
Zero-knowledge proof	Proving facts without revealing the underlying information. Keyring leverages the GROTH16 proof protocol.
Merkle Proof	Merkle Proofs, on their own, require that user reveals data. They can prove “apple” is in the set of known fruit, but they can’t do it without saying “apple”. Our zero-knowledge proving scheme ingests a Merkle Proof, so we get something like “I’m working with one of the known fruits, and I can prove it, but I won’t tell you which one”. More on point, “My identity commitment exists in the set of known ones” but I won’t tell you which identity commitment I’m working with.