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Overview

EscrowPeriod is a dual-purpose contract — it functions as both a recorder and a condition:
  • As a recorder: Records the block.timestamp when a payment is authorized
  • As a condition: Returns true only after the escrow period has elapsed
Use the same address for both AUTHORIZE_RECORDER and RELEASE_CONDITION slots on the operator. Type: Per-deployment via EscrowPeriodFactory

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Architecture

EscrowPeriod extends AuthorizationTimeRecorder and adds ICondition implementation. You don’t need to deploy AuthorizationTimeRecorder separately — use EscrowPeriod directly.

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Logic

// ICondition — returns true when escrow period has passed
function check(
    AuthCaptureEscrow.PaymentInfo calldata paymentInfo,
    uint256,
    address
) external view returns (bool allowed) {
    return !isDuringEscrowPeriod(paymentInfo);
}

// View function to check if still in escrow period
function isDuringEscrowPeriod(
    AuthCaptureEscrow.PaymentInfo calldata paymentInfo
) public view returns (bool) {
    bytes32 hash = escrow.getHash(paymentInfo);
    uint256 authTime = authorizationTimes[hash];
    if (authTime == 0) return false;
    return block.timestamp < authTime + ESCROW_PERIOD;
}
Checks:
  1. Payment was authorized (has a recorded timestamp)
  2. Current time >= authorization time + escrow period

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Deployment

Deploy via EscrowPeriodFactory: 
const escrowPeriodAddress = await escrowPeriodFactory.write.deploy([
  7 * 24 * 60 * 60,    // 7 days in seconds
  zeroHash             // bytes32(0) = operator-only
]);
Then configure the operator: 
const config = {
  authorizeRecorder: escrowPeriodAddress,   // Record auth time
  releaseCondition: escrowPeriodAddress,    // Check escrow passed
  // ...
};

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Composition with Freeze

For freeze functionality, deploy a separate Freeze condition and compose via AndCondition: 
// Escrow period only:  releaseCondition = escrowPeriod
// Freeze only:         releaseCondition = freeze
// Both:                releaseCondition = AndCondition([escrowPeriod, freeze])

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Use Cases

  • Time-lock releases — 7-day escrow for e-commerce
  • Delayed fund access — Grace period before receiver can access funds
  • Buyer protection — Give payers time to freeze or request refunds

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Gas

Cost: ~20k gas per record() call (one SSTORE for the timestamp). The check() call is a view function with one SLOAD.

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Next Steps

Freeze

Add freeze protection to escrow periods.

Factories

Deploy EscrowPeriod via factory.