Contract Name:
NanoTechChips
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "solmate/src/auth/Owned.sol";
import "solmate/src/tokens/ERC1155.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
interface IStardust {
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
}
contract NanoTechChips is ERC1155, Owned {
uint256 public constant PRICE = 250 ether;
address private verifier;
string public baseURI =
"ipfs://QmRHwfoqVzWmqWQLjvgtYp9iQYC6c379yPCB1Qq9ANAaWP/?";
bool public paused = false;
mapping(address => uint256) public mintedByWallet;
IStardust private stardustContract;
constructor(address _stardustContract) Owned(msg.sender) {
stardustContract = IStardust(_stardustContract);
}
function mintWithClaimable(
uint256 _amount,
uint256 _count,
bytes calldata _signature
) external {
require(!paused, "Minting stopped");
address signer = _recoverWallet(msg.sender, _count, _signature);
require(signer == verifier, "Unverified transaction");
require(mintedByWallet[msg.sender] < _count, "Invalid mint count");
mintedByWallet[msg.sender] = _count;
_mint(msg.sender, 0, _amount, "");
}
function mintWithClaimed(uint256 _amount) external {
require(!paused, "Minting stopped");
stardustContract.transferFrom(
msg.sender,
address(stardustContract),
PRICE * _amount
);
_mint(msg.sender, 0, _amount, "");
}
function burn(address _from, uint256 _amount) external {
require(
msg.sender == _from || isApprovedForAll[_from][msg.sender],
"Not authorized"
);
_burn(_from, 0, _amount);
}
function mintBatch(address[] calldata _to, uint256[] calldata _amounts)
external
onlyOwner
{
require(_to.length == _amounts.length, "To and amounts length must match");
for (uint256 i = 0; i < _to.length; ++i) {
_mint(_to[i], 0, _amounts[i], "");
}
}
function uri(uint256 _id)
public
view
virtual
override(ERC1155)
returns (string memory)
{
return string(abi.encodePacked(baseURI, Strings.toString(_id)));
}
function _recoverWallet(
address _wallet,
uint256 _amount,
bytes memory _signature
) internal pure returns (address) {
return
ECDSA.recover(
ECDSA.toEthSignedMessageHash(
keccak256(abi.encodePacked(_wallet, _amount))
),
_signature
);
}
function flipSale() external onlyOwner {
paused = !paused;
}
function setVerifier(address _newVerifier) external onlyOwner {
verifier = _newVerifier;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../Strings.sol";
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
/// @solidity memory-safe-assembly
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_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) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @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] = _HEX_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);
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Minimalist and gas efficient standard ERC1155 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155 {
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event TransferSingle(
address indexed operator,
address indexed from,
address indexed to,
uint256 id,
uint256 amount
);
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] amounts
);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
event URI(string value, uint256 indexed id);
/*//////////////////////////////////////////////////////////////
ERC1155 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => mapping(uint256 => uint256)) public balanceOf;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*//////////////////////////////////////////////////////////////
METADATA LOGIC
//////////////////////////////////////////////////////////////*/
function uri(uint256 id) public view virtual returns (string memory);
/*//////////////////////////////////////////////////////////////
ERC1155 LOGIC
//////////////////////////////////////////////////////////////*/
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) public virtual {
require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");
balanceOf[from][id] -= amount;
balanceOf[to][id] += amount;
emit TransferSingle(msg.sender, from, to, id, amount);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiver(to).onERC1155Received(msg.sender, from, id, amount, data) ==
ERC1155TokenReceiver.onERC1155Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) public virtual {
require(ids.length == amounts.length, "LENGTH_MISMATCH");
require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");
// Storing these outside the loop saves ~15 gas per iteration.
uint256 id;
uint256 amount;
for (uint256 i = 0; i < ids.length; ) {
id = ids[i];
amount = amounts[i];
balanceOf[from][id] -= amount;
balanceOf[to][id] += amount;
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, from, to, ids, amounts);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, from, ids, amounts, data) ==
ERC1155TokenReceiver.onERC1155BatchReceived.selector,
"UNSAFE_RECIPIENT"
);
}
function balanceOfBatch(address[] calldata owners, uint256[] calldata ids)
public
view
virtual
returns (uint256[] memory balances)
{
require(owners.length == ids.length, "LENGTH_MISMATCH");
balances = new uint256[](owners.length);
// Unchecked because the only math done is incrementing
// the array index counter which cannot possibly overflow.
unchecked {
for (uint256 i = 0; i < owners.length; ++i) {
balances[i] = balanceOf[owners[i]][ids[i]];
}
}
}
/*//////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155
interfaceId == 0x0e89341c; // ERC165 Interface ID for ERC1155MetadataURI
}
/*//////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
balanceOf[to][id] += amount;
emit TransferSingle(msg.sender, address(0), to, id, amount);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiver(to).onERC1155Received(msg.sender, address(0), id, amount, data) ==
ERC1155TokenReceiver.onERC1155Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _batchMint(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
uint256 idsLength = ids.length; // Saves MLOADs.
require(idsLength == amounts.length, "LENGTH_MISMATCH");
for (uint256 i = 0; i < idsLength; ) {
balanceOf[to][ids[i]] += amounts[i];
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, address(0), to, ids, amounts);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, address(0), ids, amounts, data) ==
ERC1155TokenReceiver.onERC1155BatchReceived.selector,
"UNSAFE_RECIPIENT"
);
}
function _batchBurn(
address from,
uint256[] memory ids,
uint256[] memory amounts
) internal virtual {
uint256 idsLength = ids.length; // Saves MLOADs.
require(idsLength == amounts.length, "LENGTH_MISMATCH");
for (uint256 i = 0; i < idsLength; ) {
balanceOf[from][ids[i]] -= amounts[i];
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, from, address(0), ids, amounts);
}
function _burn(
address from,
uint256 id,
uint256 amount
) internal virtual {
balanceOf[from][id] -= amount;
emit TransferSingle(msg.sender, from, address(0), id, amount);
}
}
/// @notice A generic interface for a contract which properly accepts ERC1155 tokens.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155TokenReceiver {
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes calldata
) external virtual returns (bytes4) {
return ERC1155TokenReceiver.onERC1155Received.selector;
}
function onERC1155BatchReceived(
address,
address,
uint256[] calldata,
uint256[] calldata,
bytes calldata
) external virtual returns (bytes4) {
return ERC1155TokenReceiver.onERC1155BatchReceived.selector;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Simple single owner authorization mixin.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol)
abstract contract Owned {
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event OwnerUpdated(address indexed user, address indexed newOwner);
/*//////////////////////////////////////////////////////////////
OWNERSHIP STORAGE
//////////////////////////////////////////////////////////////*/
address public owner;
modifier onlyOwner() virtual {
require(msg.sender == owner, "UNAUTHORIZED");
_;
}
/*//////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(address _owner) {
owner = _owner;
emit OwnerUpdated(address(0), _owner);
}
/*//////////////////////////////////////////////////////////////
OWNERSHIP LOGIC
//////////////////////////////////////////////////////////////*/
function setOwner(address newOwner) public virtual onlyOwner {
owner = newOwner;
emit OwnerUpdated(msg.sender, newOwner);
}
}