multispend

Optional module — Fedi threshold spending UI walkthrough with Nostr-signed proposal approvals.

Module ID at scaffold time: multispend-demo.

Demonstrates Fedi's multispend pattern: a shared wallet requires M-of-N Nostr-signed approvals before executing a spend. UI-only demo with mock execution — no live federation connection.

Files added

File	Purpose
`lib/multispend-types.ts`	Proposal, vote, member types
`lib/multispend-utils.ts`	Threshold logic, status helpers
`hooks/useMultispendDemo.ts`	Demo state machine
`components/multispend/MultispendDemo.tsx`	Main demo container
`components/multispend/ProposalList.tsx`	Active proposals list
`components/multispend/MultispendProposal.tsx`	Single proposal detail
`components/multispend/ApprovalVote.tsx`	Sign approval with Nostr
`app/demo/multispend/page.tsx`	Demo page

Requires

nostr-identity (always included) — approvals are Nostr-signed events

Types

interface TMultispendProposal {
  id: string;
  title: string;
  amountSats: number;
  destination: string;
  createdAt: number;
  threshold: number;
  approvals: string[];  // pubkeys that approved
  status: 'pending' | 'approved' | 'executed' | 'rejected';
}

Flow

1. Demo seeds proposals with threshold (e.g. 2-of-3)
2. User views proposal in ProposalList
3. ApprovalVote calls useIdentity().signEvent() with custom kind
4. When approvals >= threshold, status → approved
5. Mock "Execute" button simulates federation spend

ApprovalVote

Uses NIP-07 signing to approve a proposal:

const { signEvent, pubkey } = useIdentity();

async function approve(proposalId: string) {
  await signEvent({
    kind: 30078,  // application-specific
    created_at: Math.floor(Date.now() / 1000),
    tags: [['p', proposalId]],
    content: 'approve',
  });
}

Demo route

/demo/multispend — interactive walkthrough with pre-seeded proposals. Connect Nostr (or enable mock) to sign approvals.

Production note

This module is a UI reference, not a federation SDK integration. Real multispend requires federation-specific APIs beyond the scaffold scope.