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0xa2e036A22525742d4c887Cf641B422581a51C61A

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Contract Source Code Verified (Exact Match)

Contract Name:
AllocationResolver

Compiler Version
v0.8.19+commit.7dd6d404

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 16 : AllocationResolver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "@ethereum-attestation-service/eas-contracts/contracts/resolver/SchemaResolver.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract AllocationResolver is Ownable, SchemaResolver {
    constructor(IEAS eas) SchemaResolver(eas) {}

    function isPayable() public pure override returns (bool) {
        return false;
    }

    function onAttest(
        Attestation calldata attestation,
        uint256 /*value*/
    ) internal view override returns (bool) {
        (address projectAddress, , , , ) = abi.decode(
            attestation.data,
            (address, string, address[], uint32[], uint256[])
        );
        require(projectAddress != address(0), "Project not found.");
        return IAccessControl(projectAddress).hasRole(0x00, attestation.attester);
    }

    function onRevoke(
        Attestation calldata /*attestation*/,
        uint256 /*value*/
    ) internal pure override returns (bool) {
        return true;
    }
}

File 2 of 16 : SchemaResolver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import { IEAS, Attestation } from "../IEAS.sol";
import { InvalidEAS, uncheckedInc } from "../Common.sol";
import { Semver } from "../Semver.sol";

import { ISchemaResolver } from "./ISchemaResolver.sol";

/**
 * @title A base resolver contract
 */
abstract contract SchemaResolver is ISchemaResolver, Semver {
    error AccessDenied();
    error InsufficientValue();
    error NotPayable();

    // The global EAS contract.
    IEAS internal immutable _eas;

    /**
     * @dev Creates a new resolver.
     *
     * @param eas The address of the global EAS contract.
     */
    constructor(IEAS eas) Semver(1, 0, 0) {
        if (address(eas) == address(0)) {
            revert InvalidEAS();
        }

        _eas = eas;
    }

    /**
     * @dev Ensures that only the EAS contract can make this call.
     */
    modifier onlyEAS() {
        _onlyEAS();

        _;
    }

    /**
     * @inheritdoc ISchemaResolver
     */
    function isPayable() public pure virtual returns (bool) {
        return false;
    }

    /**
     * @dev ETH callback.
     */
    receive() external payable virtual {
        if (!isPayable()) {
            revert NotPayable();
        }
    }

    /**
     * @inheritdoc ISchemaResolver
     */
    function attest(Attestation calldata attestation) external payable onlyEAS returns (bool) {
        return onAttest(attestation, msg.value);
    }

    /**
     * @inheritdoc ISchemaResolver
     */
    function multiAttest(
        Attestation[] calldata attestations,
        uint256[] calldata values
    ) external payable onlyEAS returns (bool) {
        uint256 length = attestations.length;

        // We are keeping track of the remaining ETH amount that can be sent to resolvers and will keep deducting
        // from it to verify that there isn't any attempt to send too much ETH to resolvers. Please note that unless
        // some ETH was stuck in the contract by accident (which shouldn't happen in normal conditions), it won't be
        // possible to send too much ETH anyway.
        uint256 remainingValue = msg.value;

        for (uint256 i = 0; i < length; i = uncheckedInc(i)) {
            // Ensure that the attester/revoker doesn't try to spend more than available.
            uint256 value = values[i];
            if (value > remainingValue) {
                revert InsufficientValue();
            }

            // Forward the attestation to the underlying resolver and revert in case it isn't approved.
            if (!onAttest(attestations[i], value)) {
                return false;
            }

            unchecked {
                // Subtract the ETH amount, that was provided to this attestation, from the global remaining ETH amount.
                remainingValue -= value;
            }
        }

        return true;
    }

    /**
     * @inheritdoc ISchemaResolver
     */
    function revoke(Attestation calldata attestation) external payable onlyEAS returns (bool) {
        return onRevoke(attestation, msg.value);
    }

    /**
     * @inheritdoc ISchemaResolver
     */
    function multiRevoke(
        Attestation[] calldata attestations,
        uint256[] calldata values
    ) external payable onlyEAS returns (bool) {
        uint256 length = attestations.length;

        // We are keeping track of the remaining ETH amount that can be sent to resolvers and will keep deducting
        // from it to verify that there isn't any attempt to send too much ETH to resolvers. Please note that unless
        // some ETH was stuck in the contract by accident (which shouldn't happen in normal conditions), it won't be
        // possible to send too much ETH anyway.
        uint256 remainingValue = msg.value;

        for (uint256 i = 0; i < length; i = uncheckedInc(i)) {
            // Ensure that the attester/revoker doesn't try to spend more than available.
            uint256 value = values[i];
            if (value > remainingValue) {
                revert InsufficientValue();
            }

            // Forward the revocation to the underlying resolver and revert in case it isn't approved.
            if (!onRevoke(attestations[i], value)) {
                return false;
            }

            unchecked {
                // Subtract the ETH amount, that was provided to this attestation, from the global remaining ETH amount.
                remainingValue -= value;
            }
        }

        return true;
    }

    /**
     * @dev A resolver callback that should be implemented by child contracts.
     *
     * @param attestation The new attestation.
     * @param value An explicit ETH amount that was sent to the resolver. Please note that this value is verified in
     * both attest() and multiAttest() callbacks EAS-only callbacks and that in case of multi attestations, it'll
     * usually hold that msg.value != value, since msg.value aggregated the sent ETH amounts for all the attestations
     * in the batch.
     *
     * @return Whether the attestation is valid.
     */
    function onAttest(Attestation calldata attestation, uint256 value) internal virtual returns (bool);

    /**
     * @dev Processes an attestation revocation and verifies if it can be revoked.
     *
     * @param attestation The existing attestation to be revoked.
     * @param value An explicit ETH amount that was sent to the resolver. Please note that this value is verified in
     * both revoke() and multiRevoke() callbacks EAS-only callbacks and that in case of multi attestations, it'll
     * usually hold that msg.value != value, since msg.value aggregated the sent ETH amounts for all the attestations
     * in the batch.
     *
     * @return Whether the attestation can be revoked.
     */
    function onRevoke(Attestation calldata attestation, uint256 value) internal virtual returns (bool);

    /**
     * @dev Ensures that only the EAS contract can make this call.
     */
    function _onlyEAS() private view {
        if (msg.sender != address(_eas)) {
            revert AccessDenied();
        }
    }
}

File 3 of 16 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 4 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 5 of 16 : IEAS.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { ISchemaRegistry } from "./ISchemaRegistry.sol";
import { Attestation, EIP712Signature } from "./Common.sol";

/**
 * @dev A struct representing the arguments of the attestation request.
 */
struct AttestationRequestData {
    address recipient; // The recipient of the attestation.
    uint64 expirationTime; // The time when the attestation expires (Unix timestamp).
    bool revocable; // Whether the attestation is revocable.
    bytes32 refUID; // The UID of the related attestation.
    bytes data; // Custom attestation data.
    uint256 value; // An explicit ETH amount to send to the resolver. This is important to prevent accidental user errors.
}

/**
 * @dev A struct representing the full arguments of the attestation request.
 */
struct AttestationRequest {
    bytes32 schema; // The unique identifier of the schema.
    AttestationRequestData data; // The arguments of the attestation request.
}

/**
 * @dev A struct representing the full arguments of the full delegated attestation request.
 */
struct DelegatedAttestationRequest {
    bytes32 schema; // The unique identifier of the schema.
    AttestationRequestData data; // The arguments of the attestation request.
    EIP712Signature signature; // The EIP712 signature data.
    address attester; // The attesting account.
}

/**
 * @dev A struct representing the full arguments of the multi attestation request.
 */
struct MultiAttestationRequest {
    bytes32 schema; // The unique identifier of the schema.
    AttestationRequestData[] data; // The arguments of the attestation request.
}

/**
 * @dev A struct representing the full arguments of the delegated multi attestation request.
 */
struct MultiDelegatedAttestationRequest {
    bytes32 schema; // The unique identifier of the schema.
    AttestationRequestData[] data; // The arguments of the attestation requests.
    EIP712Signature[] signatures; // The EIP712 signatures data. Please note that the signatures are assumed to be signed with increasing nonces.
    address attester; // The attesting account.
}

/**
 * @dev A struct representing the arguments of the revocation request.
 */
struct RevocationRequestData {
    bytes32 uid; // The UID of the attestation to revoke.
    uint256 value; // An explicit ETH amount to send to the resolver. This is important to prevent accidental user errors.
}

/**
 * @dev A struct representing the full arguments of the revocation request.
 */
struct RevocationRequest {
    bytes32 schema; // The unique identifier of the schema.
    RevocationRequestData data; // The arguments of the revocation request.
}

/**
 * @dev A struct representing the arguments of the full delegated revocation request.
 */
struct DelegatedRevocationRequest {
    bytes32 schema; // The unique identifier of the schema.
    RevocationRequestData data; // The arguments of the revocation request.
    EIP712Signature signature; // The EIP712 signature data.
    address revoker; // The revoking account.
}

/**
 * @dev A struct representing the full arguments of the multi revocation request.
 */
struct MultiRevocationRequest {
    bytes32 schema; // The unique identifier of the schema.
    RevocationRequestData[] data; // The arguments of the revocation request.
}

/**
 * @dev A struct representing the full arguments of the delegated multi revocation request.
 */
struct MultiDelegatedRevocationRequest {
    bytes32 schema; // The unique identifier of the schema.
    RevocationRequestData[] data; // The arguments of the revocation requests.
    EIP712Signature[] signatures; // The EIP712 signatures data. Please note that the signatures are assumed to be signed with increasing nonces.
    address revoker; // The revoking account.
}

/**
 * @title EAS - Ethereum Attestation Service interface.
 */
interface IEAS {
    /**
     * @dev Emitted when an attestation has been made.
     *
     * @param recipient The recipient of the attestation.
     * @param attester The attesting account.
     * @param uid The UID the revoked attestation.
     * @param schema The UID of the schema.
     */
    event Attested(address indexed recipient, address indexed attester, bytes32 uid, bytes32 indexed schema);

    /**
     * @dev Emitted when an attestation has been revoked.
     *
     * @param recipient The recipient of the attestation.
     * @param attester The attesting account.
     * @param schema The UID of the schema.
     * @param uid The UID the revoked attestation.
     */
    event Revoked(address indexed recipient, address indexed attester, bytes32 uid, bytes32 indexed schema);

    /**
     * @dev Emitted when a data has been timestamped.
     *
     * @param data The data.
     * @param timestamp The timestamp.
     */
    event Timestamped(bytes32 indexed data, uint64 indexed timestamp);

    /**
     * @dev Emitted when a data has been revoked.
     *
     * @param revoker The address of the revoker.
     * @param data The data.
     * @param timestamp The timestamp.
     */
    event RevokedOffchain(address indexed revoker, bytes32 indexed data, uint64 indexed timestamp);

    /**
     * @dev Returns the address of the global schema registry.
     *
     * @return The address of the global schema registry.
     */
    function getSchemaRegistry() external view returns (ISchemaRegistry);

    /**
     * @dev Attests to a specific schema.
     *
     * @param request The arguments of the attestation request.
     *
     * Example:
     *
     * attest({
     *     schema: "0facc36681cbe2456019c1b0d1e7bedd6d1d40f6f324bf3dd3a4cef2999200a0",
     *     data: {
     *         recipient: "0xdEADBeAFdeAdbEafdeadbeafDeAdbEAFdeadbeaf",
     *         expirationTime: 0,
     *         revocable: true,
     *         refUID: "0x0000000000000000000000000000000000000000000000000000000000000000",
     *         data: "0xF00D",
     *         value: 0
     *     }
     * })
     *
     * @return The UID of the new attestation.
     */
    function attest(AttestationRequest calldata request) external payable returns (bytes32);

    /**
     * @dev Attests to a specific schema via the provided EIP712 signature.
     *
     * @param delegatedRequest The arguments of the delegated attestation request.
     *
     * Example:
     *
     * attestByDelegation({
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: {
     *         recipient: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
     *         expirationTime: 1673891048,
     *         revocable: true,
     *         refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
     *         data: '0x1234',
     *         value: 0
     *     },
     *     signature: {
     *         v: 28,
     *         r: '0x148c...b25b',
     *         s: '0x5a72...be22'
     *     },
     *     attester: '0xc5E8740aD971409492b1A63Db8d83025e0Fc427e'
     * })
     *
     * @return The UID of the new attestation.
     */
    function attestByDelegation(
        DelegatedAttestationRequest calldata delegatedRequest
    ) external payable returns (bytes32);

    /**
     * @dev Attests to multiple schemas.
     *
     * @param multiRequests The arguments of the multi attestation requests. The requests should be grouped by distinct
     * schema ids to benefit from the best batching optimization.
     *
     * Example:
     *
     * multiAttest([{
     *     schema: '0x33e9094830a5cba5554d1954310e4fbed2ef5f859ec1404619adea4207f391fd',
     *     data: [{
     *         recipient: '0xdEADBeAFdeAdbEafdeadbeafDeAdbEAFdeadbeaf',
     *         expirationTime: 1673891048,
     *         revocable: true,
     *         refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
     *         data: '0x1234',
     *         value: 1000
     *     },
     *     {
     *         recipient: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
     *         expirationTime: 0,
     *         revocable: false,
     *         refUID: '0x480df4a039efc31b11bfdf491b383ca138b6bde160988222a2a3509c02cee174',
     *         data: '0x00',
     *         value: 0
     *     }],
     * },
     * {
     *     schema: '0x5ac273ce41e3c8bfa383efe7c03e54c5f0bff29c9f11ef6ffa930fc84ca32425',
     *     data: [{
     *         recipient: '0xdEADBeAFdeAdbEafdeadbeafDeAdbEAFdeadbeaf',
     *         expirationTime: 0,
     *         revocable: true,
     *         refUID: '0x75bf2ed8dca25a8190c50c52db136664de25b2449535839008ccfdab469b214f',
     *         data: '0x12345678',
     *         value: 0
     *     },
     * }])
     *
     * @return The UIDs of the new attestations.
     */
    function multiAttest(MultiAttestationRequest[] calldata multiRequests) external payable returns (bytes32[] memory);

    /**
     * @dev Attests to multiple schemas using via provided EIP712 signatures.
     *
     * @param multiDelegatedRequests The arguments of the delegated multi attestation requests. The requests should be
     * grouped by distinct schema ids to benefit from the best batching optimization.
     *
     * Example:
     *
     * multiAttestByDelegation([{
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: [{
     *         recipient: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
     *         expirationTime: 1673891048,
     *         revocable: true,
     *         refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
     *         data: '0x1234',
     *         value: 0
     *     },
     *     {
     *         recipient: '0xdEADBeAFdeAdbEafdeadbeafDeAdbEAFdeadbeaf',
     *         expirationTime: 0,
     *         revocable: false,
     *         refUID: '0x0000000000000000000000000000000000000000000000000000000000000000',
     *         data: '0x00',
     *         value: 0
     *     }],
     *     signatures: [{
     *         v: 28,
     *         r: '0x148c...b25b',
     *         s: '0x5a72...be22'
     *     },
     *     {
     *         v: 28,
     *         r: '0x487s...67bb',
     *         s: '0x12ad...2366'
     *     }],
     *     attester: '0x1D86495b2A7B524D747d2839b3C645Bed32e8CF4'
     * }])
     *
     * @return The UIDs of the new attestations.
     */
    function multiAttestByDelegation(
        MultiDelegatedAttestationRequest[] calldata multiDelegatedRequests
    ) external payable returns (bytes32[] memory);

    /**
     * @dev Revokes an existing attestation to a specific schema.
     *
     * Example:
     *
     * revoke({
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: {
     *         uid: '0x101032e487642ee04ee17049f99a70590c735b8614079fc9275f9dd57c00966d',
     *         value: 0
     *     }
     * })
     *
     * @param request The arguments of the revocation request.
     */
    function revoke(RevocationRequest calldata request) external payable;

    /**
     * @dev Revokes an existing attestation to a specific schema via the provided EIP712 signature.
     *
     * Example:
     *
     * revokeByDelegation({
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: {
     *         uid: '0xcbbc12102578c642a0f7b34fe7111e41afa25683b6cd7b5a14caf90fa14d24ba',
     *         value: 0
     *     },
     *     signature: {
     *         v: 27,
     *         r: '0xb593...7142',
     *         s: '0x0f5b...2cce'
     *     },
     *     revoker: '0x244934dd3e31bE2c81f84ECf0b3E6329F5381992'
     * })
     *
     * @param delegatedRequest The arguments of the delegated revocation request.
     */
    function revokeByDelegation(DelegatedRevocationRequest calldata delegatedRequest) external payable;

    /**
     * @dev Revokes existing attestations to multiple schemas.
     *
     * @param multiRequests The arguments of the multi revocation requests. The requests should be grouped by distinct
     * schema ids to benefit from the best batching optimization.
     *
     * Example:
     *
     * multiRevoke([{
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: [{
     *         uid: '0x211296a1ca0d7f9f2cfebf0daaa575bea9b20e968d81aef4e743d699c6ac4b25',
     *         value: 1000
     *     },
     *     {
     *         uid: '0xe160ac1bd3606a287b4d53d5d1d6da5895f65b4b4bab6d93aaf5046e48167ade',
     *         value: 0
     *     }],
     * },
     * {
     *     schema: '0x5ac273ce41e3c8bfa383efe7c03e54c5f0bff29c9f11ef6ffa930fc84ca32425',
     *     data: [{
     *         uid: '0x053d42abce1fd7c8fcddfae21845ad34dae287b2c326220b03ba241bc5a8f019',
     *         value: 0
     *     },
     * }])
     */
    function multiRevoke(MultiRevocationRequest[] calldata multiRequests) external payable;

    /**
     * @dev Revokes existing attestations to multiple schemas via provided EIP712 signatures.
     *
     * @param multiDelegatedRequests The arguments of the delegated multi revocation attestation requests. The requests should be
     * grouped by distinct schema ids to benefit from the best batching optimization.
     *
     * Example:
     *
     * multiRevokeByDelegation([{
     *     schema: '0x8e72f5bc0a8d4be6aa98360baa889040c50a0e51f32dbf0baa5199bd93472ebc',
     *     data: [{
     *         uid: '0x211296a1ca0d7f9f2cfebf0daaa575bea9b20e968d81aef4e743d699c6ac4b25',
     *         value: 1000
     *     },
     *     {
     *         uid: '0xe160ac1bd3606a287b4d53d5d1d6da5895f65b4b4bab6d93aaf5046e48167ade',
     *         value: 0
     *     }],
     *     signatures: [{
     *         v: 28,
     *         r: '0x148c...b25b',
     *         s: '0x5a72...be22'
     *     },
     *     {
     *         v: 28,
     *         r: '0x487s...67bb',
     *         s: '0x12ad...2366'
     *     }],
     *     revoker: '0x244934dd3e31bE2c81f84ECf0b3E6329F5381992'
     * }])
     *
     */
    function multiRevokeByDelegation(
        MultiDelegatedRevocationRequest[] calldata multiDelegatedRequests
    ) external payable;

    /**
     * @dev Timestamps the specified bytes32 data.
     *
     * @param data The data to timestamp.
     *
     * @return The timestamp the data was timestamped with.
     */
    function timestamp(bytes32 data) external returns (uint64);

    /**
     * @dev Timestamps the specified multiple bytes32 data.
     *
     * @param data The data to timestamp.
     *
     * @return The timestamp the data was timestamped with.
     */
    function multiTimestamp(bytes32[] calldata data) external returns (uint64);

    /**
     * @dev Revokes the specified bytes32 data.
     *
     * @param data The data to timestamp.
     *
     * @return The timestamp the data was revoked with.
     */
    function revokeOffchain(bytes32 data) external returns (uint64);

    /**
     * @dev Revokes the specified multiple bytes32 data.
     *
     * @param data The data to timestamp.
     *
     * @return The timestamp the data was revoked with.
     */
    function multiRevokeOffchain(bytes32[] calldata data) external returns (uint64);

    /**
     * @dev Returns an existing attestation by UID.
     *
     * @param uid The UID of the attestation to retrieve.
     *
     * @return The attestation data members.
     */
    function getAttestation(bytes32 uid) external view returns (Attestation memory);

    /**
     * @dev Checks whether an attestation exists.
     *
     * @param uid The UID of the attestation to retrieve.
     *
     * @return Whether an attestation exists.
     */
    function isAttestationValid(bytes32 uid) external view returns (bool);

    /**
     * @dev Returns the timestamp that the specified data was timestamped with.
     *
     * @param data The data to query.
     *
     * @return The timestamp the data was timestamped with.
     */
    function getTimestamp(bytes32 data) external view returns (uint64);

    /**
     * @dev Returns the timestamp that the specified data was timestamped with.
     *
     * @param data The data to query.
     *
     * @return The timestamp the data was timestamped with.
     */
    function getRevokeOffchain(address revoker, bytes32 data) external view returns (uint64);
}

File 6 of 16 : Common.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// A representation of an empty/uninitialized UID.
bytes32 constant EMPTY_UID = 0;

// A zero expiration represents an non-expiring attestation.
uint64 constant NO_EXPIRATION_TIME = 0;

error AccessDenied();
error InvalidEAS();
error InvalidLength();
error InvalidSignature();
error NotFound();

/**
 * @dev A struct representing EIP712 signature data.
 */
struct EIP712Signature {
    uint8 v; // The recovery ID.
    bytes32 r; // The x-coordinate of the nonce R.
    bytes32 s; // The signature data.
}

/**
 * @dev A struct representing a single attestation.
 */
struct Attestation {
    bytes32 uid; // A unique identifier of the attestation.
    bytes32 schema; // The unique identifier of the schema.
    uint64 time; // The time when the attestation was created (Unix timestamp).
    uint64 expirationTime; // The time when the attestation expires (Unix timestamp).
    uint64 revocationTime; // The time when the attestation was revoked (Unix timestamp).
    bytes32 refUID; // The UID of the related attestation.
    address recipient; // The recipient of the attestation.
    address attester; // The attester/sender of the attestation.
    bool revocable; // Whether the attestation is revocable.
    bytes data; // Custom attestation data.
}

/**
 * @dev A helper function to work with unchecked iterators in loops.
 */
function uncheckedInc(uint256 i) pure returns (uint256 j) {
    unchecked {
        j = i + 1;
    }
}

File 7 of 16 : Semver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @dev A simple contract for managing contract versions.
 */
contract Semver {
    // Contract's major version number.
    uint256 private immutable _major;

    // Contract's minor version number.
    uint256 private immutable _minor;

    // Contract's patch version number.
    uint256 private immutable _path;

    /**
     * @param major Major version number.
     * @param minor Minor version number.
     * @param patch Patch version number.
     */
    constructor(uint256 major, uint256 minor, uint256 patch) {
        _major = major;
        _minor = minor;
        _path = patch;
    }

    /**
     * @notice Returns the full semver contract version.
     *
     * @return Semver contract version as a string.
     */
    function version() external view returns (string memory) {
        return
            string(
                abi.encodePacked(Strings.toString(_major), ".", Strings.toString(_minor), ".", Strings.toString(_path))
            );
    }
}

File 8 of 16 : ISchemaResolver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { Attestation } from "../Common.sol";

/**
 * @title The interface of an optional schema resolver.
 */
interface ISchemaResolver {
    /**
     * @dev Returns whether the resolver supports ETH transfers.
     */
    function isPayable() external pure returns (bool);

    /**
     * @dev Processes an attestation and verifies whether it's valid.
     *
     * @param attestation The new attestation.
     *
     * @return Whether the attestation is valid.
     */
    function attest(Attestation calldata attestation) external payable returns (bool);

    /**
     * @dev Processes multiple attestations and verifies whether they are valid.
     *
     * @param attestations The new attestations.
     * @param values Explicit ETH amounts which were sent with each attestation.
     *
     * @return Whether all the attestations are valid.
     */
    function multiAttest(
        Attestation[] calldata attestations,
        uint256[] calldata values
    ) external payable returns (bool);

    /**
     * @dev Processes an attestation revocation and verifies if it can be revoked.
     *
     * @param attestation The existing attestation to be revoked.
     *
     * @return Whether the attestation can be revoked.
     */
    function revoke(Attestation calldata attestation) external payable returns (bool);

    /**
     * @dev Processes revocation of multiple attestation and verifies they can be revoked.
     *
     * @param attestations The existing attestations to be revoked.
     * @param values Explicit ETH amounts which were sent with each revocation.
     *
     * @return Whether the attestations can be revoked.
     */
    function multiRevoke(
        Attestation[] calldata attestations,
        uint256[] calldata values
    ) external payable returns (bool);
}

File 9 of 16 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 10 of 16 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

File 11 of 16 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

File 12 of 16 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 13 of 16 : ISchemaRegistry.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { ISchemaResolver } from "./resolver/ISchemaResolver.sol";

/**
 * @title A struct representing a record for a submitted schema.
 */
struct SchemaRecord {
    bytes32 uid; // The unique identifier of the schema.
    ISchemaResolver resolver; // Optional schema resolver.
    bool revocable; // Whether the schema allows revocations explicitly.
    string schema; // Custom specification of the schema (e.g., an ABI).
}

/**
 * @title The global schema registry interface.
 */
interface ISchemaRegistry {
    /**
     * @dev Emitted when a new schema has been registered
     *
     * @param uid The schema UID.
     * @param registerer The address of the account used to register the schema.
     */
    event Registered(bytes32 indexed uid, address registerer);

    /**
     * @dev Submits and reserves a new schema
     *
     * @param schema The schema data schema.
     * @param resolver An optional schema resolver.
     * @param revocable Whether the schema allows revocations explicitly.
     *
     * @return The UID of the new schema.
     */
    function register(string calldata schema, ISchemaResolver resolver, bool revocable) external returns (bytes32);

    /**
     * @dev Returns an existing schema by UID
     *
     * @param uid The UID of the schema to retrieve.
     *
     * @return The schema data members.
     */
    function getSchema(bytes32 uid) external view returns (SchemaRecord memory);
}

File 14 of 16 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

File 15 of 16 : SignedMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

File 16 of 16 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

Settings
{
  "remappings": [
    "@ethereum-attestation-service/eas-contracts/contracts/=node_modules/@ethereum-attestation-service/eas-contracts/contracts/",
    "@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
    "@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
    "forge-std/=lib/forge-std/src/",
    "murky/=lib/murky/src/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "openzeppelin-contracts/=lib/murky/lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"contract IEAS","name":"eas","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AccessDenied","type":"error"},{"inputs":[],"name":"InsufficientValue","type":"error"},{"inputs":[],"name":"InvalidEAS","type":"error"},{"inputs":[],"name":"NotPayable","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"components":[{"internalType":"bytes32","name":"uid","type":"bytes32"},{"internalType":"bytes32","name":"schema","type":"bytes32"},{"internalType":"uint64","name":"time","type":"uint64"},{"internalType":"uint64","name":"expirationTime","type":"uint64"},{"internalType":"uint64","name":"revocationTime","type":"uint64"},{"internalType":"bytes32","name":"refUID","type":"bytes32"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"attester","type":"address"},{"internalType":"bool","name":"revocable","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Attestation","name":"attestation","type":"tuple"}],"name":"attest","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"isPayable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"components":[{"internalType":"bytes32","name":"uid","type":"bytes32"},{"internalType":"bytes32","name":"schema","type":"bytes32"},{"internalType":"uint64","name":"time","type":"uint64"},{"internalType":"uint64","name":"expirationTime","type":"uint64"},{"internalType":"uint64","name":"revocationTime","type":"uint64"},{"internalType":"bytes32","name":"refUID","type":"bytes32"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"attester","type":"address"},{"internalType":"bool","name":"revocable","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Attestation[]","name":"attestations","type":"tuple[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"multiAttest","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes32","name":"uid","type":"bytes32"},{"internalType":"bytes32","name":"schema","type":"bytes32"},{"internalType":"uint64","name":"time","type":"uint64"},{"internalType":"uint64","name":"expirationTime","type":"uint64"},{"internalType":"uint64","name":"revocationTime","type":"uint64"},{"internalType":"bytes32","name":"refUID","type":"bytes32"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"attester","type":"address"},{"internalType":"bool","name":"revocable","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Attestation[]","name":"attestations","type":"tuple[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"multiRevoke","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"bytes32","name":"uid","type":"bytes32"},{"internalType":"bytes32","name":"schema","type":"bytes32"},{"internalType":"uint64","name":"time","type":"uint64"},{"internalType":"uint64","name":"expirationTime","type":"uint64"},{"internalType":"uint64","name":"revocationTime","type":"uint64"},{"internalType":"bytes32","name":"refUID","type":"bytes32"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"attester","type":"address"},{"internalType":"bool","name":"revocable","type":"bool"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct Attestation","name":"attestation","type":"tuple"}],"name":"revoke","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000004200000000000000000000000000000000000021

-----Decoded View---------------
Arg [0] : eas (address): 0x4200000000000000000000000000000000000021

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004200000000000000000000000000000000000021


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