import type { OutcomeEnvelope, TrustedCompletionReceipt } from './types.js';
export declare const OUTCOME_AUTHENTICATION_DOMAIN = "humbleagents/outcome-authentication/v1\0";
export declare function deriveProjectPseudonym(key: Uint8Array, projectId: string): string;
export declare function buildOutcomeEnvelope(receipt: TrustedCompletionReceipt, installationKey: Uint8Array): OutcomeEnvelope;