Contracts and addresses

Chain id 10143 (Monad testnet), RPC https://testnet-rpc.monad.xyz, explorer testnet.monadscan.com.

Deployed addresses

Contract	Address	Block
IdentityRegistry	0xa67ef35974bc8874318d249b6e74c7bd5870d1db	63285812
CommunityRegistry	0x41c19889a3218000482a1cd6e13640edcd16cf32	63285812
PostRegistry	0xaC74A6AF7Ec96e28F2885916673EF3B9aACF10F5	63379890
ChronoFeed	0xF9CC631A04C5398Be97d5410303Cd61bD56d1a79	63379890
HotFeed	0xAF50B9FE82E42a7fCb9B7a31BC1DDB9dd02a661d	63379890
BestFeed	0x383C7Af1CA32f72f916a14bb03f95ec1D98A14E6	63379890
ControversialFeed	0x6A94E5a83102b04c5965F8A756e2cB84c6B7170c	63379890
AlgorithmRegistry	0xeEC08F90CFe669e3366933cF1C72fe4f08A3F289	63379890

No contract has an admin function. Even the development team cannot remove an algorithm, delete a post, or ban an account.

PostRegistry

Holds posts, votes, and the entire karma ledger.

uint256 public nextPostId = 1;
mapping(address => int256) public karmaOf;
mapping(uint256 => mapping(address => bool)) public hasLiked;
mapping(uint256 => mapping(address => bool)) public hasDisliked;

struct Post {
    address author;
    uint48  createdAt;
    uint48  parentId;         // 0 = post, non-zero = comment
    uint32  likeCount;        // raw
    uint32  weightedLikes;    // weighted
    uint32  dislikeCount;     // raw
    uint32  weightedDislikes; // weighted
    uint32  repostCount;      // reserved
    uint32  replyCount;
}

function post(string text, string mediaURI) external;
function reply(uint48 parentId, string text, string mediaURI) external;
function postOf(uint256 id) external view returns (Post memory);
function postsOf(uint256[] ids) external view returns (Post[] memory);

function like(uint256 id) external;
function dislike(uint256 id) external;
function unlike(uint256 id) external;
function undislike(uint256 id) external;

function karmaOf(address) external view returns (int256);   // 100 points = 1 vote
function weightOf(address) external view returns (uint32);  // 0–200

Events: PostCreated, Liked(id, account, weight), Unliked, Disliked(id, account, weight), Undisliked.

Rules: you cannot vote on your own post; unvoting returns exactly the weight that was added; if karma is negative, weight is 0. See Karma and weight.

IdentityRegistry

Name and metadata, nothing else.

function register(bytes32 handle, string metadataURI) external;
function changeHandle(bytes32 newHandle) external;   // releases the old name
function setMetadata(string metadataURI) external;

Events: Registered, HandleChanged, MetadataUpdated. A handle is bytes32, 3–21 characters a–z0–9_. Changing a name releases the old name in the same transaction.

CommunityRegistry

A community is a public label; the contract cannot delete posts, ban accounts, or transfer names.

function create(bytes32 name, string metadataURI) external;
function join(bytes32 name) external;
function leave(bytes32 name) external;
function setMetadata(bytes32 name, string metadataURI) external; // creator only
function isValidName(bytes32 name) public pure returns (bool);

Events: Created, Joined, Left, MetadataUpdated. join/leave are idempotent; creating a community does not automatically join it. See Communities.

AlgorithmRegistry

The algorithm list and default slots.

uint8 public constant SLOT_FEED = 0;
uint8 public constant SLOT_EXPLORE = 1;

function register(IFeedAlgorithm algo) external returns (uint256 id);
function algorithmAt(uint256 id) external view returns (address);
function algorithmCount() external view returns (uint256);
function setMyAlgorithm(uint8 slot, uint256 algorithmId) external;
function algorithmOf(address user, uint8 slot) external view returns (address);

Events: AlgorithmRegistered, AlgorithmSelected. register requires no permission. See Algorithms.