Phase 4 · financial sandbox
Every unit of value has two sides.
Campaign funds are reserved before participation, earnings are posted only after valid consent, and wallet totals come from an append-only double-entry ledger.
Individual wallet
Simulate a payout
Choose a deterministic provider result to verify success, reversal, or retry handling. EUR and USD always remain separate.
Minimum 100 minor units. There is no bank, card, crypto, or external payment provider in this sandbox.
Funding controls
Organization treasury
Campaign commitments
Active funding reservations
Household energy choices
Cleaner urban mobility study
Append-only history
Your earnings
Provider simulator
Payout attempts
Finance operations
Controlled treasury actions
Request a deposit or refund
A second authorized actor must approve the request before any ledger transaction is created.
Reconciliation and reports
Persist a zero-sum check for both currency books and export pseudonymous operational summaries.
Finance or Auditor access is required for reports.
Four-eyes queue
Deposits and refunds
Provider retry queue
Processing payouts
Versioned controls
Finance policy
New policy versions affect only future payment agreements and payouts. Existing agreements retain their original fee snapshot.
Period governance
Accounting close
A completed month can close only after balanced EUR and USD reconciliation, followed by approval from a second finance actor.