// SPDX-License-Identifier: MIT pragma solidity 0.8.23; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; /** * @title AereComputeMarket — DePIN compute coordination layer * @notice The ON-CHAIN coordination + settlement layer for a decentralized * compute marketplace (DePIN-for-AI). Providers stake native AERE and * advertise capacity; requesters escrow AERE for a job; the provider * does the work OFF-CHAIN and submits a result hash; the requester * confirms (or a timeout auto-confirms) and payment is released. A * dispute window lets the requester challenge, with Foundation * arbitration and provider-stake slashing. * * SCOPE (honest): this contract is the trust/settlement rail. The actual * GPU/compute supply is off-chain and requires real hardware providers — * the network is only as real as the providers who join. No new token: * staking, escrow and payment are all in native AERE. */ contract AereComputeMarket is Ownable, ReentrancyGuard { uint256 public constant MIN_STAKE = 10 ether; // 10 AERE to be a provider uint64 public constant CONFIRM_WINDOW = 3 days; // requester confirm/dispute window uint16 public constant SLASH_BPS = 5000; // 50% of stake slashed on lost dispute address public immutable FOUNDATION; // dispute arbiter struct Provider { bool active; uint256 stake; uint32 pricePerUnit; // informational, AERE-wei per compute unit uint32 activeJobs; // outstanding claimed/submitted jobs string endpoint; // provider API endpoint (off-chain) } enum Status { None, Open, Claimed, Submitted, Paid, Refunded, Slashed } struct Job { address requester; address provider; uint256 payment; // escrowed AERE bytes32 specHash; // hash of the off-chain job spec bytes32 resultHash; // hash of the off-chain result Status status; uint64 submittedAt; } mapping(address => Provider) public providers; mapping(uint256 => Job) public jobs; uint256 public jobCount; uint256 public slashPool; // slashed stake, sweepable by Foundation to the sink/treasury event ProviderRegistered(address indexed provider, uint256 stake, uint32 pricePerUnit, string endpoint); event ProviderDeregistered(address indexed provider, uint256 stakeReturned); event JobPosted(uint256 indexed id, address indexed requester, uint256 payment, bytes32 specHash); event JobClaimed(uint256 indexed id, address indexed provider); event JobSubmitted(uint256 indexed id, bytes32 resultHash); event JobPaid(uint256 indexed id, address indexed provider, uint256 payment); event JobRefunded(uint256 indexed id, address indexed requester, uint256 payment); event JobDisputed(uint256 indexed id); event DisputeResolved(uint256 indexed id, bool providerWon); error BadStake(); error NotProvider(); error HasActiveJobs(); error ZeroPayment(); error WrongStatus(); error NotRequester(); error NotJobProvider(); error WindowOpen(); error WindowClosed(); error ZeroAddress(); constructor(address foundation) { if (foundation == address(0)) revert ZeroAddress(); FOUNDATION = foundation; } modifier onlyFoundation() { if (msg.sender != FOUNDATION) revert("not foundation"); _; } /* ------------------------------ providers ------------------------------- */ function registerProvider(uint32 pricePerUnit, string calldata endpoint) external payable { if (msg.value < MIN_STAKE) revert BadStake(); Provider storage p = providers[msg.sender]; p.active = true; p.stake += msg.value; p.pricePerUnit = pricePerUnit; p.endpoint = endpoint; emit ProviderRegistered(msg.sender, p.stake, pricePerUnit, endpoint); } function deregisterProvider() external nonReentrant { Provider storage p = providers[msg.sender]; if (!p.active) revert NotProvider(); if (p.activeJobs != 0) revert HasActiveJobs(); uint256 amt = p.stake; p.active = false; p.stake = 0; (bool ok, ) = msg.sender.call{value: amt}(""); require(ok, "xfer"); emit ProviderDeregistered(msg.sender, amt); } /* -------------------------------- jobs ---------------------------------- */ function postJob(bytes32 specHash) external payable returns (uint256 id) { if (msg.value == 0) revert ZeroPayment(); id = jobCount++; jobs[id] = Job({ requester: msg.sender, provider: address(0), payment: msg.value, specHash: specHash, resultHash: bytes32(0), status: Status.Open, submittedAt: 0 }); emit JobPosted(id, msg.sender, msg.value, specHash); } /// @notice Requester cancels an unclaimed job and reclaims the escrow. function cancelJob(uint256 id) external nonReentrant { Job storage j = jobs[id]; if (j.requester != msg.sender) revert NotRequester(); if (j.status != Status.Open) revert WrongStatus(); j.status = Status.Refunded; uint256 amt = j.payment; j.payment = 0; (bool ok, ) = msg.sender.call{value: amt}(""); require(ok, "xfer"); emit JobRefunded(id, msg.sender, amt); } function claimJob(uint256 id) external { Job storage j = jobs[id]; if (j.status != Status.Open) revert WrongStatus(); Provider storage p = providers[msg.sender]; if (!p.active || p.stake < MIN_STAKE) revert NotProvider(); j.provider = msg.sender; j.status = Status.Claimed; p.activeJobs += 1; emit JobClaimed(id, msg.sender); } function submitResult(uint256 id, bytes32 resultHash) external { Job storage j = jobs[id]; if (j.provider != msg.sender) revert NotJobProvider(); if (j.status != Status.Claimed) revert WrongStatus(); j.resultHash = resultHash; j.status = Status.Submitted; j.submittedAt = uint64(block.timestamp); emit JobSubmitted(id, resultHash); } /// @notice Requester accepts the result → pay the provider immediately. function confirmJob(uint256 id) external nonReentrant { Job storage j = jobs[id]; if (j.requester != msg.sender) revert NotRequester(); if (j.status != Status.Submitted) revert WrongStatus(); _pay(id, j); } /// @notice After the confirm window with no dispute, anyone can settle → pay provider. function autoConfirm(uint256 id) external nonReentrant { Job storage j = jobs[id]; if (j.status != Status.Submitted) revert WrongStatus(); if (block.timestamp < j.submittedAt + CONFIRM_WINDOW) revert WindowOpen(); _pay(id, j); } function _pay(uint256 id, Job storage j) internal { j.status = Status.Paid; uint256 amt = j.payment; j.payment = 0; providers[j.provider].activeJobs -= 1; (bool ok, ) = j.provider.call{value: amt}(""); require(ok, "xfer"); emit JobPaid(id, j.provider, amt); } /* ------------------------------ disputes -------------------------------- */ function disputeJob(uint256 id) external { Job storage j = jobs[id]; if (j.requester != msg.sender) revert NotRequester(); if (j.status != Status.Submitted) revert WrongStatus(); if (block.timestamp >= j.submittedAt + CONFIRM_WINDOW) revert WindowClosed(); j.status = Status.Claimed; // parked pending arbitration; marker below via event // Re-mark to Submitted-disputed is avoided; we keep Claimed + emit; Foundation resolves. emit JobDisputed(id); } /// @notice Foundation arbitrates a disputed job. providerWon → provider paid; /// else requester refunded AND provider stake slashed by SLASH_BPS. function resolveDispute(uint256 id, bool providerWon) external onlyFoundation nonReentrant { Job storage j = jobs[id]; if (j.status != Status.Claimed || j.provider == address(0) || j.submittedAt == 0) revert WrongStatus(); Provider storage p = providers[j.provider]; p.activeJobs -= 1; uint256 amt = j.payment; j.payment = 0; if (providerWon) { j.status = Status.Paid; (bool ok, ) = j.provider.call{value: amt}(""); require(ok, "xfer"); emit JobPaid(id, j.provider, amt); } else { j.status = Status.Slashed; uint256 slash = (p.stake * SLASH_BPS) / 10_000; p.stake -= slash; slashPool += slash; (bool ok, ) = j.requester.call{value: amt}(""); require(ok, "xfer"); emit JobRefunded(id, j.requester, amt); } emit DisputeResolved(id, providerWon); } function sweepSlashPool(address to) external onlyFoundation nonReentrant { uint256 amt = slashPool; slashPool = 0; (bool ok, ) = to.call{value: amt}(""); require(ok, "xfer"); } }