Concepts

The ideas the economy is built on — read top to bottom for the full picture.

• Overview

  What economy-lab is (and isn't): a double-entry credit economy, provably solvent and tamper-evident, built as a library rather than a product.

• The money model

  A dual-rate credit economy — buy ≥ par ≥ payout — where the platform spread is the only fee and every value carries an explicit currency and scale.

• Accounts & double-entry

  Every operation is a balanced double-entry posting across a fixed chart of accounts: spendable, earned, promo, and the system accounts.

• Solvency

  Provably solvent: real USD held in trust covers users' spendable credits at par, and the backing check reports any shortfall.

• Actors & authorization

  Who can do what: every request names an actor — user, system, or operator — and passes a central authorization gate before any work runs.

• Lifecycles

  Operations that live over time — the payout saga and subscription states — modeled as explicit state machines.

• Integrity

  Tamper-evidence: a per-account hash chain plus signed checkpoints make any altered entry detectable, atop conservation and no-overdraft invariants.

• The proof

  The independent prover: one report that re-derives conservation, backing, no-overdraft, and chain integrity from the ledger itself.