IB20Factory.isB20Initialized

Returns whether the Factory has fully initialized a B20 token at the given address.

Signature

IB20Factory.sol

function isB20Initialized(address token) external view returns (bool);

Field	Value
Selector	0x6a45ba98
Canonical signature	isB20Initialized(address)

Description

Returns true if and only if token bears the 0xB2 address prefix and the 0xef bytecode stub that createB20 plants when it creates a token. This is the stronger existence check: isB20(address) tests the prefix alone and can return true for an address the Factory has never touched, whereas isB20Initialized confirms the Factory has run to completion at that address.

The flag flips exactly once, the moment the creating createB20 call returns. It never reverts.

Before createB20 is called, the predicted token address matches the 0xB2 prefix but carries no stub. Calls to that address are no-ops. Only after createB20 returns does the 0xef stub exist, enabling dynamic routing to the token’s native logic.

Parameters

Name	Type	Description
token	address	Address to check.

Returns

Type	Description
bool	true if token is a fully initialized B20 (prefix + stub present); false otherwise.

Reverts

Never reverts.

Access Control

View function. No role required.

Example

Usage Example

IB20Factory(factoryAddress).isB20Initialized(tokenAddress);