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Advance forge rollout, Ethereum rails, and NBC sources

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every.channel 2026-04-01 15:58:49 -07:00
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contracts/EveryChannelWitnessRegistry.sol Normal file
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// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.24;
/// @title EveryChannelWitnessRegistry
/// @notice Minimal registry-backed witness set for observation consensus. This is intentionally
/// simple for the first testnet tranche: explicit membership, no staking, no slashing.
contract EveryChannelWitnessRegistry {
address public owner;
mapping(address => bool) public isWitness;
uint256 public witnessCount;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event WitnessAdded(address indexed witness);
event WitnessRemoved(address indexed witness);
error NotOwner();
error ZeroAddress();
error WitnessAlreadyRegistered(address witness);
error WitnessNotRegistered(address witness);
constructor(address initialOwner) {
if (initialOwner == address(0)) revert ZeroAddress();
owner = initialOwner;
emit OwnershipTransferred(address(0), initialOwner);
}
modifier onlyOwner() {
if (msg.sender != owner) revert NotOwner();
_;
}
function transferOwnership(address newOwner) external onlyOwner {
if (newOwner == address(0)) revert ZeroAddress();
address previous = owner;
owner = newOwner;
emit OwnershipTransferred(previous, newOwner);
}
function addWitness(address witness) external onlyOwner {
if (witness == address(0)) revert ZeroAddress();
if (isWitness[witness]) revert WitnessAlreadyRegistered(witness);
isWitness[witness] = true;
witnessCount += 1;
emit WitnessAdded(witness);
}
function removeWitness(address witness) external onlyOwner {
if (!isWitness[witness]) revert WitnessNotRegistered(witness);
isWitness[witness] = false;
witnessCount -= 1;
emit WitnessRemoved(witness);
}
}