IB20Asset.announce

The docs/B20/Asset.md source file that previously documented the Asset variant (including announcements) has been removed as part of a documentation restructure. This reference page reflects the last verified interface state.

Signature

IB20Asset.sol

function announce( bytes[] calldata internalCalls, string calldata id, string calldata description, string calldata uri ) external;

Field	Value
Selector	`0x595135dd`
Canonical signature	`announce(bytes[],string,string,string)`

Description

Posts a holder-impacting announcement and atomically dispatches each entry in internalCalls via self-delegatecall (preserving msg.sender). Emits Announcement then EndAnnouncement with the same id. Pass an empty internalCalls for a pure disclosure. Reverts with AccessControlUnauthorizedAccount when the caller does not hold OPERATOR_ROLE. Reverts with AnnouncementIdAlreadyUsed when id has previously been consumed. Reverts with InternalCallMalformed when an entry in internalCalls is shorter than four bytes. Reverts with AnnouncementInProgress when an entry in internalCalls targets announce itself. An inner call that raises a Solidity Panic (e.g. arithmetic overflow) propagates the raw Panic unchanged; any other inner revert wraps as InternalCallFailed(call). An inner out-of-gas halts the whole call.

Parameters

Parameter	Type	Description
`internalCalls`	`bytes[] calldata`	ABI-encoded calldata blobs executed in order via self-`delegatecall`; may be empty.
`id`	`string calldata`	Caller-chosen announcement id; single-use over the token’s lifetime.
`description`	`string calldata`	Human-readable summary of the announcement.
`uri`	`string calldata`	Off-chain URI containing the full announcement contents.

Access Control

OPERATOR_ROLE gates this call.

Policy Interaction

No direct policy interaction.

Example

Usage Example

// Disclose and schedule a 2:1 forward split, effective at the ex-date.
bytes[] memory calls = new bytes[](1);
calls[0] = abi.encodeCall(IB20Asset.updateUIMultiplier, (2e18, exDateTimestamp));

IB20Asset(token).announce({
    internalCalls: calls,
    id: "2026-Q3-split",
    description: "2:1 forward split, effective at ex-date",
    uri: "https://disclosures.example.com/..."
});

Specifications

Reference

Node Operators

Security

Signature

Description

Parameters

Access Control

Policy Interaction

Example

​Signature

​Description

​Parameters

​Access Control

​Policy Interaction

​Example

Signature

Description

Parameters

Access Control

Policy Interaction

Example