OP_RETURN based tokens are fundamentally flawed

from blog Jonas Hietala, | ↗ original
Two new Bitcoin Cash token solutions have recently been suggested: Simple Ledger Protocol: A token system for Bitcoin Cash Introducing Colored Coins: a Bitcoin Cash token implementation Both are improvements over Tokeda as they allow permissionless transfers. However all commit to OP_RETURN which unfortunately is fundamentally flawed. No true SPV...