Attack 2 · original
The 99-year smart contract is fantasy
Ethereum is 10 years old, USDC is 8, Cloudflare is 16. Trusting any specific blockchain or stablecoin for 99 years is naive. If the chain dies in year 30, the smart contract is inaccessible, the DAO cannot operate, the wrapper entity cannot make distributions, and the property's governance freezes.
Scenario
Ethereum is 10 years old, USDC is 8, Cloudflare is 16. Trusting any specific blockchain or stablecoin for 99 years is naive. If the chain dies in year 30, the smart contract is inaccessible, the DAO cannot operate, the wrapper entity cannot make distributions, and the property's governance freezes.
Mechanism
A specific blockchain or stablecoin becomes unavailable mid-term. The smart contract as the operating agreement's implementation becomes inaccessible, leaving no executable governance path for a Tier 2 entity unless fallback procedures exist.
Mitigation
Architecture explicitly accepts migration. The NRD-lite governs at the legal layer and lasts 99 years; the wrapper entity persists as a legal entity even if its smart contract becomes inaccessible. Smart contract is one implementation of the operating agreement; if the chain dies, the wrapper continues under operating-agreement-only governance. Each Tier 2 template includes a 'long-term technology assumptions' section with current chain, current stablecoin, and a migration plan.
Residual risk
Migration is non-trivial for Tier 2 deployments and requires annual review of chain viability plus pre-defined migration procedures. No archival or blockchain system has been demonstrated to survive 99 years.