Chapter 12: Technical Implementation and Educational Coding

12.1 Correct Development Path

For learning: start with testnets and small contracts. For production: never use educational code without architectural review, comprehensive testing and independent audit.

12.2 Minimal Test (Foundry style)

function testTransferOnlyEligible() public {
    token.setEligible(alice, true);
    token.setEligible(bob, false);
    token.mint(alice, 100);
    vm.expectRevert();
    vm.prank(alice);
    token.transfer(bob, 10); // must fail – bob not eligible
}

12.3 Secure Mint Pseudocode

INPUT  asset_id, investor_id, amount
VERIFY legal_right(asset_id)
VERIFY KYC(investor_id)
VERIFY eligibility(investor_id, asset)
VERIFY custody(asset_id)
VERIFY supply_limit(amount)
EXECUTE mint()
WRITE   audit_event()
RETURN  token_id / transaction_hash