Most Ethereum assets assume immediate ownership transfer.

Once a transaction is confirmed, ownership changes instantly and irreversibly.

This model is efficient and highly composable, but it also creates a specific class of risks:

• phishing attacks

• compromised wallets

• incorrect addresses

• rushed decisions

• inheritance loss

Traditional ERC20 systems generally treat transfers as final events.

An alternative approach is programmable custody.

Instead of transferring ownership immediately, assets can enter a protected state where ownership transfer is delayed and subject to predefined conditions.

Examples include:

• revocable transfers

• delayed settlement

• inheritance-aware ownership

• recovery windows

• beneficiary designation

Under this model, a transfer may be initiated today but become final only after a defined waiting period.

During that period, the original owner may retain specific rights, such as revocation or recovery.

This changes the security model from:

“ownership changes instantly”

to:

“ownership changes when predefined conditions are satisfied.”

The result is a custody framework designed around time, recoverability and auditability rather than immediate finality.

Ethereum smart contracts make these alternative ownership models possible without requiring trusted intermediaries.

As programmable custody systems evolve, they may enable entirely new categories of digital asset protection and inheritance management.