Answer Receipts

type UsedMemory = {
  memoryId: string;
  namespace: NamespaceId;
  snippet: string;
  sourceAgent: AgentId;
  walrusRef: string;
  authorized: boolean; // allowed by policy at retrieval
  verified: boolean;   // blob genuinely resolves on Walrus (a live check)
};

type AnswerReceipt = {
  answerId: string;
  agentId: AgentId;
  usedMemories: UsedMemory[];
  blockedNamespaces: NamespaceId[];
  createdAt: string;
};

// packages/carry-core/src/receipt.ts
export function buildReceipt({ agentId, answerId, used, blockedNamespaces, verifiedRefs, createdAt }) {
  return {
    answerId, agentId,
    usedMemories: used.map((m) => ({
      memoryId: m.memoryId, namespace: m.namespace, snippet: m.content,
      sourceAgent: m.sourceAgent, walrusRef: m.walrusRef,
      authorized: true,                          // only allowed memory reaches here
      verified: verifiedRefs.has(m.walrusRef),   // live Walrus check
    })),
    blockedNamespaces, createdAt,
  };
}