diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..37ffb5a
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,16 @@
+{
+  "overrides": [
+    {
+      "files": "*.js",
+      "options": {
+        "semi": false
+      }
+    },
+    {
+      "files": "*.sol",
+      "options": {
+        "tabWidth": 2
+      }
+    }
+  ]
+}
diff --git a/contracts/Contracts.sol b/contracts/Contracts.sol
index b24dbfa..e1ab652 100644
--- a/contracts/Contracts.sol
+++ b/contracts/Contracts.sol
@@ -4,21 +4,20 @@ pragma solidity ^0.8.0;
 import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
 
 contract Contracts {
+  mapping(bytes32 => bool) private ids; // contract id, equal to hash of bid
+  mapping(bytes32 => uint256) private durations; // contract duration in blocks
+  mapping(bytes32 => uint256) private sizes; // storage size in bytes
+  mapping(bytes32 => bytes32) private contentHashes; // hash of data to be stored
+  mapping(bytes32 => uint256) private proofPeriods; // period between proofs
+  mapping(bytes32 => uint256) private proofTimeouts; // timeout for proof submission
+  mapping(bytes32 => uint256) private prices; // price in coins
+  mapping(bytes32 => address) private hosts; // host that provides storage
 
-  mapping(bytes32=>bool) private ids; // contract id, equal to hash of bid
-  mapping(bytes32=>uint) private durations; // contract duration in blocks
-  mapping(bytes32=>uint) private sizes; // storage size in bytes
-  mapping(bytes32=>bytes32) private contentHashes; // hash of data to be stored
-  mapping(bytes32=>uint) private proofPeriods; // period between proofs
-  mapping(bytes32=>uint) private proofTimeouts; // timeout for proof submission
-  mapping(bytes32=>uint) private prices; // price in coins
-  mapping(bytes32=>address) private hosts; // host that provides storage
-
-  function _duration(bytes32 id) internal view returns (uint) {
+  function _duration(bytes32 id) internal view returns (uint256) {
     return durations[id];
   }
 
-  function _size(bytes32 id) internal view returns (uint) {
+  function _size(bytes32 id) internal view returns (uint256) {
     return sizes[id];
   }
 
@@ -26,15 +25,15 @@ contract Contracts {
     return contentHashes[id];
   }
 
-  function _proofPeriod(bytes32 id) internal view returns (uint) {
+  function _proofPeriod(bytes32 id) internal view returns (uint256) {
     return proofPeriods[id];
   }
 
-  function _proofTimeout(bytes32 id) internal view returns (uint) {
+  function _proofTimeout(bytes32 id) internal view returns (uint256) {
     return proofTimeouts[id];
   }
 
-  function _price(bytes32 id) internal view returns (uint) {
+  function _price(bytes32 id) internal view returns (uint256) {
     return prices[id];
   }
 
@@ -43,21 +42,18 @@ contract Contracts {
   }
 
   function _newContract(
-    uint duration,
-    uint size,
+    uint256 duration,
+    uint256 size,
     bytes32 contentHash,
-    uint proofPeriod,
-    uint proofTimeout,
+    uint256 proofPeriod,
+    uint256 proofTimeout,
     bytes32 nonce,
-    uint price,
+    uint256 price,
     address host,
-    uint bidExpiry,
+    uint256 bidExpiry,
     bytes memory requestSignature,
     bytes memory bidSignature
-  )
-    internal
-    returns (bytes32 id)
-  {
+  ) internal returns (bytes32 id) {
     bytes32 requestHash = _hashRequest(
       duration,
       size,
@@ -84,57 +80,52 @@ contract Contracts {
 
   // Creates hash for a storage request that can be used to check its signature.
   function _hashRequest(
-    uint duration,
-    uint size,
+    uint256 duration,
+    uint256 size,
     bytes32 hash,
-    uint proofPeriod,
-    uint proofTimeout,
+    uint256 proofPeriod,
+    uint256 proofTimeout,
     bytes32 nonce
-  )
-    private pure
-    returns (bytes32)
-  {
-    return keccak256(abi.encode(
-      "[dagger.request.v1]",
-      duration,
-      size,
-      hash,
-      proofPeriod,
-      proofTimeout,
-      nonce
-    ));
+  ) private pure returns (bytes32) {
+    return
+      keccak256(
+        abi.encode(
+          "[dagger.request.v1]",
+          duration,
+          size,
+          hash,
+          proofPeriod,
+          proofTimeout,
+          nonce
+        )
+      );
   }
 
   // Creates hash for a storage bid that can be used to check its signature.
-  function _hashBid(bytes32 requestHash, uint expiry, uint price)
-    private pure
-    returns (bytes32)
-  {
-    return keccak256(abi.encode(
-      "[dagger.bid.v1]",
-      requestHash,
-      expiry,
-      price
-    ));
+  function _hashBid(
+    bytes32 requestHash,
+    uint256 expiry,
+    uint256 price
+  ) private pure returns (bytes32) {
+    return keccak256(abi.encode("[dagger.bid.v1]", requestHash, expiry, price));
   }
 
   // Checks a signature for a storage request or bid, given its hash.
-  function _checkSignature(bytes memory signature, bytes32 hash, address signer)
-    private pure
-  {
+  function _checkSignature(
+    bytes memory signature,
+    bytes32 hash,
+    address signer
+  ) private pure {
     bytes32 messageHash = ECDSA.toEthSignedMessageHash(hash);
     address recovered = ECDSA.recover(messageHash, signature);
     require(recovered == signer, "Invalid signature");
   }
 
-  function _checkBidExpiry(uint expiry) private view {
+  function _checkBidExpiry(uint256 expiry) private view {
     require(expiry > block.timestamp, "Bid expired");
   }
 
   function _checkId(bytes32 id) private view {
-    require(
-      !ids[id],
-      "A contract with this id already exists"
-    );
+    require(!ids[id], "A contract with this id already exists");
   }
 }
diff --git a/contracts/Proofs.sol b/contracts/Proofs.sol
index 1315c05..623115f 100644
--- a/contracts/Proofs.sol
+++ b/contracts/Proofs.sol
@@ -2,45 +2,44 @@
 pragma solidity ^0.8.0;
 
 contract Proofs {
+  mapping(bytes32 => bool) private ids;
+  mapping(bytes32 => uint256) private periods;
+  mapping(bytes32 => uint256) private timeouts;
+  mapping(bytes32 => uint256) private starts;
+  mapping(bytes32 => uint256) private ends;
+  mapping(bytes32 => uint256) private markers;
+  mapping(bytes32 => uint256) private missed;
+  mapping(bytes32 => mapping(uint256 => bool)) private received;
+  mapping(bytes32 => mapping(uint256 => bool)) private missing;
 
-  mapping(bytes32=>bool) private ids;
-  mapping(bytes32=>uint) private periods;
-  mapping(bytes32=>uint) private timeouts;
-  mapping(bytes32=>uint) private starts;
-  mapping(bytes32=>uint) private ends;
-  mapping(bytes32=>uint) private markers;
-  mapping(bytes32=>uint) private missed;
-  mapping(bytes32=>mapping(uint=>bool)) private received;
-  mapping(bytes32=>mapping(uint=>bool)) private missing;
-
-  function _period(bytes32 id) internal view returns (uint) {
+  function _period(bytes32 id) internal view returns (uint256) {
     return periods[id];
   }
 
-  function _timeout(bytes32 id) internal view returns (uint) {
+  function _timeout(bytes32 id) internal view returns (uint256) {
     return timeouts[id];
   }
 
-  function _end(bytes32 id) internal view returns (uint) {
+  function _end(bytes32 id) internal view returns (uint256) {
     return ends[id];
   }
 
-  function _missed(bytes32 id) internal view returns (uint) {
+  function _missed(bytes32 id) internal view returns (uint256) {
     return missed[id];
   }
 
   // Checks that proof timeout is <= 128. Only the latest 256 blocks can be
   // checked in a smart contract, so that leaves a period of at least 128 blocks
   // after timeout for a validator to signal the absence of a proof.
-  function _checkTimeout(uint timeout) private pure {
+  function _checkTimeout(uint256 timeout) private pure {
     require(timeout <= 128, "Invalid proof timeout, needs to be <= 128");
   }
 
   function _expectProofs(
     bytes32 id,
-    uint period,
-    uint timeout,
-    uint duration
+    uint256 period,
+    uint256 timeout,
+    uint256 duration
   ) internal {
     require(!ids[id], "Proof id already in use");
     _checkTimeout(timeout);
@@ -49,32 +48,28 @@ contract Proofs {
     timeouts[id] = timeout;
     starts[id] = block.number;
     ends[id] = block.number + duration + 2 * timeout;
-    markers[id] = uint(blockhash(block.number - 1)) % period;
+    markers[id] = uint256(blockhash(block.number - 1)) % period;
   }
 
   // Check whether a proof is required at the time of the block with the
   // specified block number. A proof has to be submitted within the proof
   // timeout for it to be valid. Whether a proof is required is determined
   // randomly, but on average it is once every proof period.
-  function _isProofRequired(
-    bytes32 id,
-    uint blocknumber
-  )
-    internal view
+  function _isProofRequired(bytes32 id, uint256 blocknumber)
+    internal
+    view
     returns (bool)
   {
     if (blocknumber < starts[id] || blocknumber >= ends[id]) {
       return false;
     }
     bytes32 hash = blockhash(blocknumber - 1);
-    return hash != 0 && uint(hash) % periods[id] == markers[id];
+    return hash != 0 && uint256(hash) % periods[id] == markers[id];
   }
 
-  function _isProofTimedOut(
-    bytes32 id,
-    uint blocknumber
-  )
-    internal view
+  function _isProofTimedOut(bytes32 id, uint256 blocknumber)
+    internal
+    view
     returns (bool)
   {
     return block.number >= blocknumber + timeouts[id];
@@ -82,11 +77,9 @@ contract Proofs {
 
   function _submitProof(
     bytes32 id,
-    uint blocknumber,
+    uint256 blocknumber,
     bool proof
-  )
-    internal
-  {
+  ) internal {
     require(proof, "Invalid proof"); // TODO: replace bool by actual proof
     require(
       _isProofRequired(id, blocknumber),
@@ -100,19 +93,10 @@ contract Proofs {
     received[id][blocknumber] = true;
   }
 
-  function _markProofAsMissing(bytes32 id, uint blocknumber) internal {
-    require(
-      _isProofTimedOut(id, blocknumber),
-      "Proof has not timed out yet"
-    );
-    require(
-      !received[id][blocknumber],
-      "Proof was submitted, not missing"
-    );
-    require(
-      _isProofRequired(id, blocknumber),
-      "Proof was not required"
-    );
+  function _markProofAsMissing(bytes32 id, uint256 blocknumber) internal {
+    require(_isProofTimedOut(id, blocknumber), "Proof has not timed out yet");
+    require(!received[id][blocknumber], "Proof was submitted, not missing");
+    require(_isProofRequired(id, blocknumber), "Proof was not required");
     require(!missing[id][blocknumber], "Proof already marked as missing");
     missing[id][blocknumber] = true;
     missed[id] += 1;
diff --git a/contracts/Stakes.sol b/contracts/Stakes.sol
index 0b17b74..8cf9fad 100644
--- a/contracts/Stakes.sol
+++ b/contracts/Stakes.sol
@@ -4,10 +4,9 @@ pragma solidity ^0.8.0;
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 
 contract Stakes {
-
   IERC20 private token;
-  mapping(address=>uint) private stakes;
-  mapping(address=>uint) private locks;
+  mapping(address => uint256) private stakes;
+  mapping(address => uint256) private locks;
 
   constructor(IERC20 __token) {
     token = __token;
@@ -17,11 +16,11 @@ contract Stakes {
     return token;
   }
 
-  function _stake(address account) internal view returns (uint) {
+  function _stake(address account) internal view returns (uint256) {
     return stakes[account];
   }
 
-  function _increaseStake(uint amount) internal {
+  function _increaseStake(uint256 amount) internal {
     token.transferFrom(msg.sender, address(this), amount);
     stakes[msg.sender] += amount;
   }
@@ -40,7 +39,7 @@ contract Stakes {
     locks[account] -= 1;
   }
 
-  function _slash(address account, uint percentage) internal {
-    stakes[account] = stakes[account] * (100 - percentage) / 100;
+  function _slash(address account, uint256 percentage) internal {
+    stakes[account] = (stakes[account] * (100 - percentage)) / 100;
   }
 }
diff --git a/contracts/Storage.sol b/contracts/Storage.sol
index 9c8fcb1..1f33c29 100644
--- a/contracts/Storage.sol
+++ b/contracts/Storage.sol
@@ -6,41 +6,36 @@ import "./Proofs.sol";
 import "./Stakes.sol";
 
 contract Storage is Contracts, Proofs, Stakes {
+  uint256 public stakeAmount;
+  uint256 public slashMisses;
+  uint256 public slashPercentage;
 
-  uint public stakeAmount;
-  uint public slashMisses;
-  uint public slashPercentage;
-
-  mapping(bytes32=>bool) private finished;
+  mapping(bytes32 => bool) private finished;
 
   constructor(
     IERC20 token,
-    uint _stakeAmount,
-    uint _slashMisses,
-    uint _slashPercentage
-  )
-    Stakes(token)
-  {
+    uint256 _stakeAmount,
+    uint256 _slashMisses,
+    uint256 _slashPercentage
+  ) Stakes(token) {
     stakeAmount = _stakeAmount;
     slashMisses = _slashMisses;
     slashPercentage = _slashPercentage;
   }
 
   function newContract(
-    uint _duration,
-    uint _size,
+    uint256 _duration,
+    uint256 _size,
     bytes32 _contentHash,
-    uint _proofPeriod,
-    uint _proofTimeout,
+    uint256 _proofPeriod,
+    uint256 _proofTimeout,
     bytes32 _nonce,
-    uint _price,
+    uint256 _price,
     address _host,
-    uint _bidExpiry,
+    uint256 _bidExpiry,
     bytes memory requestSignature,
     bytes memory bidSignature
-  )
-    public
-  {
+  ) public {
     require(_stake(_host) >= stakeAmount, "Insufficient stake");
     _lockStake(_host);
     _token().transferFrom(msg.sender, address(this), _price);
@@ -76,11 +71,11 @@ contract Storage is Contracts, Proofs, Stakes {
     finished[id] = true;
   }
 
-  function duration(bytes32 contractId) public view returns (uint) {
+  function duration(bytes32 contractId) public view returns (uint256) {
     return _duration(contractId);
   }
 
-  function size(bytes32 contractId) public view returns (uint) {
+  function size(bytes32 contractId) public view returns (uint256) {
     return _size(contractId);
   }
 
@@ -88,7 +83,7 @@ contract Storage is Contracts, Proofs, Stakes {
     return _contentHash(contractId);
   }
 
-  function price(bytes32 contractId) public view returns (uint) {
+  function price(bytes32 contractId) public view returns (uint256) {
     return _price(contractId);
   }
 
@@ -96,41 +91,37 @@ contract Storage is Contracts, Proofs, Stakes {
     return _host(contractId);
   }
 
-  function proofPeriod(bytes32 contractId) public view returns (uint) {
+  function proofPeriod(bytes32 contractId) public view returns (uint256) {
     return _proofPeriod(contractId);
   }
 
-  function proofTimeout(bytes32 contractId) public view returns (uint) {
+  function proofTimeout(bytes32 contractId) public view returns (uint256) {
     return _proofTimeout(contractId);
   }
 
-  function proofEnd(bytes32 contractId) public view returns (uint) {
+  function proofEnd(bytes32 contractId) public view returns (uint256) {
     return _end(contractId);
   }
 
-  function missingProofs(bytes32 contractId) public view returns (uint) {
+  function missingProofs(bytes32 contractId) public view returns (uint256) {
     return _missed(contractId);
   }
 
-  function stake(address account) public view returns (uint) {
+  function stake(address account) public view returns (uint256) {
     return _stake(account);
   }
 
-  function isProofRequired(
-    bytes32 contractId,
-    uint blocknumber
-  )
-    public view
+  function isProofRequired(bytes32 contractId, uint256 blocknumber)
+    public
+    view
     returns (bool)
   {
     return _isProofRequired(contractId, blocknumber);
   }
 
-  function isProofTimedOut(
-    bytes32 contractId,
-    uint blocknumber
-  )
-    public view
+  function isProofTimedOut(bytes32 contractId, uint256 blocknumber)
+    public
+    view
     returns (bool)
   {
     return _isProofTimedOut(contractId, blocknumber);
@@ -138,22 +129,20 @@ contract Storage is Contracts, Proofs, Stakes {
 
   function submitProof(
     bytes32 contractId,
-    uint blocknumber,
+    uint256 blocknumber,
     bool proof
-  )
-    public
-  {
+  ) public {
     _submitProof(contractId, blocknumber, proof);
   }
 
-  function markProofAsMissing(bytes32 contractId, uint blocknumber) public {
+  function markProofAsMissing(bytes32 contractId, uint256 blocknumber) public {
     _markProofAsMissing(contractId, blocknumber);
     if (_missed(contractId) % slashMisses == 0) {
       _slash(host(contractId), slashPercentage);
     }
   }
 
-  function increaseStake(uint amount) public {
+  function increaseStake(uint256 amount) public {
     _increaseStake(amount);
   }
 
diff --git a/contracts/TestContracts.sol b/contracts/TestContracts.sol
index b8a3c7c..88cfd2a 100644
--- a/contracts/TestContracts.sol
+++ b/contracts/TestContracts.sol
@@ -5,22 +5,19 @@ import "./Contracts.sol";
 
 // exposes internal functions of Contracts for testing
 contract TestContracts is Contracts {
-
   function newContract(
-    uint _duration,
-    uint _size,
+    uint256 _duration,
+    uint256 _size,
     bytes32 _contentHash,
-    uint _proofPeriod,
-    uint _proofTimeout,
+    uint256 _proofPeriod,
+    uint256 _proofTimeout,
     bytes32 _nonce,
-    uint _price,
+    uint256 _price,
     address _host,
-    uint _bidExpiry,
+    uint256 _bidExpiry,
     bytes memory requestSignature,
     bytes memory bidSignature
-  )
-    public
-  {
+  ) public {
     _newContract(
       _duration,
       _size,
@@ -32,14 +29,15 @@ contract TestContracts is Contracts {
       _host,
       _bidExpiry,
       requestSignature,
-      bidSignature);
+      bidSignature
+    );
   }
 
-  function duration(bytes32 id) public view returns (uint) {
+  function duration(bytes32 id) public view returns (uint256) {
     return _duration(id);
   }
 
-  function size(bytes32 id) public view returns (uint) {
+  function size(bytes32 id) public view returns (uint256) {
     return _size(id);
   }
 
@@ -47,7 +45,7 @@ contract TestContracts is Contracts {
     return _contentHash(id);
   }
 
-  function price(bytes32 id) public view returns (uint) {
+  function price(bytes32 id) public view returns (uint256) {
     return _price(id);
   }
 
diff --git a/contracts/TestProofs.sol b/contracts/TestProofs.sol
index 125b057..e477e20 100644
--- a/contracts/TestProofs.sol
+++ b/contracts/TestProofs.sol
@@ -5,37 +5,34 @@ import "./Proofs.sol";
 
 // exposes internal functions of Proofs for testing
 contract TestProofs is Proofs {
-
-  function period(bytes32 id) public view returns (uint) {
+  function period(bytes32 id) public view returns (uint256) {
     return _period(id);
   }
 
-  function timeout(bytes32 id) public view returns (uint) {
+  function timeout(bytes32 id) public view returns (uint256) {
     return _timeout(id);
   }
 
-  function end(bytes32 id) public view returns (uint) {
+  function end(bytes32 id) public view returns (uint256) {
     return _end(id);
   }
 
-  function missed(bytes32 id) public view returns (uint) {
+  function missed(bytes32 id) public view returns (uint256) {
     return _missed(id);
   }
 
   function expectProofs(
     bytes32 id,
-    uint _period,
-    uint _timeout,
-    uint _duration
+    uint256 _period,
+    uint256 _timeout,
+    uint256 _duration
   ) public {
     _expectProofs(id, _period, _timeout, _duration);
   }
 
-  function isProofRequired(
-    bytes32 id,
-    uint blocknumber
-  )
-    public view
+  function isProofRequired(bytes32 id, uint256 blocknumber)
+    public
+    view
     returns (bool)
   {
     return _isProofRequired(id, blocknumber);
@@ -43,15 +40,13 @@ contract TestProofs is Proofs {
 
   function submitProof(
     bytes32 id,
-    uint blocknumber,
+    uint256 blocknumber,
     bool proof
-  )
-    public
-  {
+  ) public {
     _submitProof(id, blocknumber, proof);
   }
 
-  function markProofAsMissing(bytes32 id, uint blocknumber) public {
-      _markProofAsMissing(id, blocknumber);
+  function markProofAsMissing(bytes32 id, uint256 blocknumber) public {
+    _markProofAsMissing(id, blocknumber);
   }
 }
diff --git a/contracts/TestStakes.sol b/contracts/TestStakes.sol
index 19e4abb..1993952 100644
--- a/contracts/TestStakes.sol
+++ b/contracts/TestStakes.sol
@@ -5,14 +5,13 @@ import "./Stakes.sol";
 
 // exposes internal functions of Stakes for testing
 contract TestStakes is Stakes {
-
   constructor(IERC20 token) Stakes(token) {}
 
-  function stake(address account) public view returns (uint) {
+  function stake(address account) public view returns (uint256) {
     return _stake(account);
   }
 
-  function increaseStake(uint amount) public {
+  function increaseStake(uint256 amount) public {
     _increaseStake(amount);
   }
 
@@ -28,7 +27,7 @@ contract TestStakes is Stakes {
     _unlockStake(account);
   }
 
-  function slash(address account, uint percentage) public {
+  function slash(address account, uint256 percentage) public {
     _slash(account, percentage);
   }
 }
diff --git a/contracts/TestToken.sol b/contracts/TestToken.sol
index b36fc78..863d9f2 100644
--- a/contracts/TestToken.sol
+++ b/contracts/TestToken.sol
@@ -6,7 +6,7 @@ import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 contract TestToken is ERC20 {
   constructor() ERC20("TestToken", "TST") {}
 
-  function mint(address holder, uint amount) public {
+  function mint(address holder, uint256 amount) public {
     _mint(holder, amount);
   }
 }
diff --git a/deploy/storage.js b/deploy/storage.js
index 45febe0..e7d0785 100644
--- a/deploy/storage.js
+++ b/deploy/storage.js
@@ -1,12 +1,12 @@
-module.exports = async ({deployments, getNamedAccounts}) => {
-  const token = await deployments.get('TestToken')
+module.exports = async ({ deployments, getNamedAccounts }) => {
+  const token = await deployments.get("TestToken")
   const stakeAmount = 100
   const slashMisses = 3
   const slashPercentage = 10
   const args = [token.address, stakeAmount, slashMisses, slashPercentage]
   const { deployer } = await getNamedAccounts()
-  await deployments.deploy('Storage', { args, from: deployer })
+  await deployments.deploy("Storage", { args, from: deployer })
 }
 
-module.exports.tags = ['Storage']
-module.exports.dependencies = ['TestToken']
+module.exports.tags = ["Storage"]
+module.exports.dependencies = ["TestToken"]
diff --git a/deploy/token.js b/deploy/token.js
index 76b271c..c977fef 100644
--- a/deploy/token.js
+++ b/deploy/token.js
@@ -1,6 +1,6 @@
-module.exports = async ({deployments, getNamedAccounts}) => {
+module.exports = async ({ deployments, getNamedAccounts }) => {
   const { deployer } = await getNamedAccounts()
-  await deployments.deploy('TestToken', { from: deployer })
+  await deployments.deploy("TestToken", { from: deployer })
 }
 
-module.exports.tags = ['TestToken']
+module.exports.tags = ["TestToken"]
diff --git a/package-lock.json b/package-lock.json
index 11d48dd..641e622 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1338,6 +1338,12 @@
         "color-convert": "^1.9.0"
       }
     },
+    "antlr4ts": {
+      "version": "0.5.0-alpha.4",
+      "resolved": "https://registry.npmjs.org/antlr4ts/-/antlr4ts-0.5.0-alpha.4.tgz",
+      "integrity": "sha512-WPQDt1B74OfPv/IMS2ekXAKkTZIHl88uMetg6q3OTqgFxZ/dxDXI0EWLyZid/1Pe6hTftyg5N7gel5wNAGxXyQ==",
+      "dev": true
+    },
     "anymatch": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.2.tgz",
@@ -12982,11 +12988,112 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.4.1.tgz",
-      "integrity": "sha512-9fbDAXSBcc6Bs1mZrDYb3XKzDLm4EXXL9sC1LqKP5rZkT6KRr/rf9amVUcODVXgguK/isJz0d0hP72WeaKWsvA==",
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.5.1.tgz",
+      "integrity": "sha512-vBZcPRUR5MZJwoyi3ZoyQlc1rXeEck8KgeC9AwwOn+exuxLxq5toTRDTSaVrXHxelDMHy9zlicw8u66yxoSUFg==",
       "dev": true
     },
+    "prettier-plugin-solidity": {
+      "version": "1.0.0-beta.19",
+      "resolved": "https://registry.npmjs.org/prettier-plugin-solidity/-/prettier-plugin-solidity-1.0.0-beta.19.tgz",
+      "integrity": "sha512-xxRQ5ZiiZyUoMFLE9h7HnUDXI/daf1tnmL1msEdcKmyh7ZGQ4YklkYLC71bfBpYU2WruTb5/SFLUaEb3RApg5g==",
+      "dev": true,
+      "requires": {
+        "@solidity-parser/parser": "^0.14.0",
+        "emoji-regex": "^10.0.0",
+        "escape-string-regexp": "^4.0.0",
+        "semver": "^7.3.5",
+        "solidity-comments-extractor": "^0.0.7",
+        "string-width": "^4.2.3"
+      },
+      "dependencies": {
+        "@solidity-parser/parser": {
+          "version": "0.14.0",
+          "resolved": "https://registry.npmjs.org/@solidity-parser/parser/-/parser-0.14.0.tgz",
+          "integrity": "sha512-cX0JJRcmPtNUJpzD2K7FdA7qQsTOk1UZnFx2k7qAg9ZRvuaH5NBe5IEdBMXGlmf2+FmjhqbygJ26H8l2SV7aKQ==",
+          "dev": true,
+          "requires": {
+            "antlr4ts": "^0.5.0-alpha.4"
+          }
+        },
+        "ansi-regex": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+          "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+          "dev": true
+        },
+        "emoji-regex": {
+          "version": "10.0.0",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-10.0.0.tgz",
+          "integrity": "sha512-KmJa8l6uHi1HrBI34udwlzZY1jOEuID/ft4d8BSSEdRyap7PwBEt910453PJa5MuGvxkLqlt4Uvhu7tttFHViw==",
+          "dev": true
+        },
+        "escape-string-regexp": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
+          "integrity": "sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
+          "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
+          "dev": true
+        },
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "dev": true,
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
+        "semver": {
+          "version": "7.3.5",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz",
+          "integrity": "sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "string-width": {
+          "version": "4.2.3",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+          "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.1"
+          },
+          "dependencies": {
+            "emoji-regex": {
+              "version": "8.0.0",
+              "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+              "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
+              "dev": true
+            }
+          }
+        },
+        "strip-ansi": {
+          "version": "6.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+          "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^5.0.1"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+          "dev": true
+        }
+      }
+    },
     "printj": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/printj/-/printj-1.1.2.tgz",
@@ -13360,6 +13467,12 @@
         }
       }
     },
+    "solidity-comments-extractor": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/solidity-comments-extractor/-/solidity-comments-extractor-0.0.7.tgz",
+      "integrity": "sha512-wciNMLg/Irp8OKGrh3S2tfvZiZ0NEyILfcRCXCD4mp7SgK/i9gzLfhY2hY7VMCQJ3kH9UB9BzNdibIVMchzyYw==",
+      "dev": true
+    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
diff --git a/package.json b/package.json
index 3b2c4a8..40dbad5 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,8 @@
   "license": "MIT",
   "scripts": {
     "test": "hardhat test",
-    "start": "hardhat node --export 'deployment-localhost.json'"
+    "start": "hardhat node --export 'deployment-localhost.json'",
+    "format": "prettier --write contracts/**/*.sol test/**/*.js"
   },
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
@@ -14,6 +15,8 @@
     "ethers": "^5.4.7",
     "hardhat": "^2.6.5",
     "hardhat-deploy": "^0.9.8",
-    "hardhat-deploy-ethers": "^0.3.0-beta.11"
+    "hardhat-deploy-ethers": "^0.3.0-beta.11",
+    "prettier": "^2.5.1",
+    "prettier-plugin-solidity": "^1.0.0-beta.19"
   }
 }
diff --git a/test/Contracts.test.js b/test/Contracts.test.js
index 296bf03..ccbc647 100644
--- a/test/Contracts.test.js
+++ b/test/Contracts.test.js
@@ -4,7 +4,6 @@ const { hashRequest, hashBid, sign } = require("./marketplace")
 const { exampleRequest, exampleBid } = require("./examples")
 
 describe("Contracts", function () {
-
   const request = exampleRequest()
   const bid = exampleBid()
 
@@ -14,11 +13,11 @@ describe("Contracts", function () {
   let id
 
   beforeEach(async function () {
-    [client, host] = await ethers.getSigners()
+    ;[client, host] = await ethers.getSigners()
     let Contracts = await ethers.getContractFactory("TestContracts")
     contracts = await Contracts.deploy()
     requestHash = hashRequest(request)
-    bidHash = hashBid({...bid, requestHash})
+    bidHash = hashBid({ ...bid, requestHash })
     id = bidHash
   })
 
@@ -57,72 +56,83 @@ describe("Contracts", function () {
       await sign(client, requestHash),
       await sign(host, bidHash)
     )
-    await expect(contracts.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      bid.bidExpiry,
-      await sign(client, requestHash),
-      await sign(host, bidHash)
-    )).to.be.revertedWith("A contract with this id already exists")
+    await expect(
+      contracts.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        bid.bidExpiry,
+        await sign(client, requestHash),
+        await sign(host, bidHash)
+      )
+    ).to.be.revertedWith("A contract with this id already exists")
   })
 
   it("cannot be created when client signature is invalid", async function () {
-    let invalidHash = hashRequest({...request, duration: request.duration + 1})
+    let invalidHash = hashRequest({
+      ...request,
+      duration: request.duration + 1,
+    })
     let invalidSignature = await sign(client, invalidHash)
-    await expect(contracts.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      bid.bidExpiry,
-      invalidSignature,
-      await sign(host, bidHash)
-    )).to.be.revertedWith("Invalid signature")
+    await expect(
+      contracts.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        bid.bidExpiry,
+        invalidSignature,
+        await sign(host, bidHash)
+      )
+    ).to.be.revertedWith("Invalid signature")
   })
 
   it("cannot be created when host signature is invalid", async function () {
-    let invalidBid = hashBid({...bid, requestHash, price: bid.price - 1})
+    let invalidBid = hashBid({ ...bid, requestHash, price: bid.price - 1 })
     let invalidSignature = await sign(host, invalidBid)
-    await expect(contracts.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      bid.bidExpiry,
-      await sign(client, requestHash),
-      invalidSignature
-    )).to.be.revertedWith("Invalid signature")
+    await expect(
+      contracts.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        bid.bidExpiry,
+        await sign(client, requestHash),
+        invalidSignature
+      )
+    ).to.be.revertedWith("Invalid signature")
   })
 
   it("cannot be created when bid has expired", async function () {
     let expired = Math.round(Date.now() / 1000) - 60 // 1 minute ago
-    let bidHash = hashBid({...bid, requestHash, bidExpiry: expired})
-    await expect(contracts.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      expired,
-      await sign(client, requestHash),
-      await sign(host, bidHash),
-    )).to.be.revertedWith("Bid expired")
+    let bidHash = hashBid({ ...bid, requestHash, bidExpiry: expired })
+    await expect(
+      contracts.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        expired,
+        await sign(client, requestHash),
+        await sign(host, bidHash)
+      )
+    ).to.be.revertedWith("Bid expired")
   })
 })
diff --git a/test/Proofs.test.js b/test/Proofs.test.js
index 1e21f52..a4e0951 100644
--- a/test/Proofs.test.js
+++ b/test/Proofs.test.js
@@ -1,9 +1,8 @@
 const { expect } = require("chai")
 const { ethers } = require("hardhat")
-const { mineBlock, minedBlockNumber } = require ("./mining")
+const { mineBlock, minedBlockNumber } = require("./mining")
 
 describe("Proofs", function () {
-
   const id = ethers.utils.randomBytes(32)
   const period = 10
   const timeout = 5
@@ -16,20 +15,20 @@ describe("Proofs", function () {
     proofs = await Proofs.deploy()
   })
 
-  it("indicates that proofs are required", async function() {
+  it("indicates that proofs are required", async function () {
     await proofs.expectProofs(id, period, timeout, duration)
     expect(await proofs.period(id)).to.equal(period)
     expect(await proofs.timeout(id)).to.equal(timeout)
   })
 
-  it("calculates an endtime based on duration and timeout", async function() {
+  it("calculates an endtime based on duration and timeout", async function () {
     await proofs.expectProofs(id, period, timeout, duration)
     let start = await minedBlockNumber()
     let end = start + duration + 2 * timeout
     expect(await proofs.end(id)).to.equal(end)
   })
 
-  it("does not allow ids to be reused", async function() {
+  it("does not allow ids to be reused", async function () {
     await proofs.expectProofs(id, period, timeout, duration)
     await expect(
       proofs.expectProofs(id, period, timeout, duration)
@@ -47,7 +46,7 @@ describe("Proofs", function () {
     let blocks = 600
     let amount = 0
     await proofs.expectProofs(id, period, timeout, blocks)
-    for (let i=0; i<blocks; i++) {
+    for (let i = 0; i < blocks; i++) {
       await mineBlock()
       if (await proofs.isProofRequired(id, await minedBlockNumber())) {
         amount += 1
@@ -58,37 +57,36 @@ describe("Proofs", function () {
   })
 
   it("requires no proof before start time", async function () {
-    for (let i=0; i<4*period; i++) {
+    for (let i = 0; i < 4 * period; i++) {
       mineBlock()
     }
     await proofs.expectProofs(id, period, timeout, duration)
     let start = await minedBlockNumber()
-    for (let i=1; i<4*period; i++) {
-      expect(await proofs.isProofRequired(id, start-i)).to.be.false
+    for (let i = 1; i < 4 * period; i++) {
+      expect(await proofs.isProofRequired(id, start - i)).to.be.false
     }
   })
 
   describe("when proofs are required", async function () {
-
     beforeEach(async function () {
       await proofs.expectProofs(id, period, timeout, duration)
     })
 
     async function mineUntilProofIsRequired(id) {
-      while (!await proofs.isProofRequired(id, await minedBlockNumber())) {
+      while (!(await proofs.isProofRequired(id, await minedBlockNumber()))) {
         mineBlock()
       }
     }
 
     async function mineUntilProofTimeout() {
-      for (let i=0; i<timeout; i++) {
+      for (let i = 0; i < timeout; i++) {
         mineBlock()
       }
     }
 
     async function mineUntilEnd() {
       const end = await proofs.end(id)
-      while (await minedBlockNumber() < end) {
+      while ((await minedBlockNumber()) < end) {
         mineBlock()
       }
     }
@@ -96,7 +94,8 @@ describe("Proofs", function () {
     it("requires no proof for blocks that are unavailable", async function () {
       await mineUntilProofIsRequired(id)
       let blocknumber = await minedBlockNumber()
-      for (let i=0; i<256; i++) { // only last 256 blocks available in solidity
+      for (let i = 0; i < 256; i++) {
+        // only last 256 blocks available in solidity
         mineBlock()
       }
       expect(await proofs.isProofRequired(id, blocknumber)).to.be.false
@@ -104,7 +103,7 @@ describe("Proofs", function () {
 
     it("requires no proof after end time", async function () {
       await mineUntilEnd()
-      for (let i=0; i<4*period; i++) {
+      for (let i = 0; i < 4 * period; i++) {
         const blocknumber = await minedBlockNumber()
         expect(await proofs.isProofRequired(id, blocknumber)).to.be.false
         mineBlock()
@@ -144,7 +143,7 @@ describe("Proofs", function () {
       ).to.be.revertedWith("Proof not allowed after timeout")
     })
 
-    it("fails proof submission when already submitted", async function() {
+    it("fails proof submission when already submitted", async function () {
       await mineUntilProofIsRequired(id)
       let blocknumber = await minedBlockNumber()
       await proofs.submitProof(id, blocknumber, true)
diff --git a/test/Stakes.test.js b/test/Stakes.test.js
index 6306603..f8ac8d5 100644
--- a/test/Stakes.test.js
+++ b/test/Stakes.test.js
@@ -2,13 +2,12 @@ const { expect } = require("chai")
 const { ethers } = require("hardhat")
 
 describe("Stakes", function () {
-
   var stakes
   var token
   var host
 
-  beforeEach(async function() {
-    [host] = await ethers.getSigners()
+  beforeEach(async function () {
+    ;[host] = await ethers.getSigners()
     const Stakes = await ethers.getContractFactory("TestStakes")
     const TestToken = await ethers.getContractFactory("TestToken")
     token = await TestToken.deploy()
@@ -30,9 +29,9 @@ describe("Stakes", function () {
   })
 
   it("does not increase stake when token transfer fails", async function () {
-    await expect(
-      stakes.increaseStake(20)
-    ).to.be.revertedWith("ERC20: transfer amount exceeds allowance")
+    await expect(stakes.increaseStake(20)).to.be.revertedWith(
+      "ERC20: transfer amount exceeds allowance"
+    )
   })
 
   it("allows withdrawal of stake", async function () {
@@ -54,9 +53,9 @@ describe("Stakes", function () {
   })
 
   it("fails to unlock when already unlocked", async function () {
-    await expect(
-      stakes.unlockStake(host.address)
-    ).to.be.revertedWith("Stake already unlocked")
+    await expect(stakes.unlockStake(host.address)).to.be.revertedWith(
+      "Stake already unlocked"
+    )
   })
 
   it("requires an equal amount of locks and unlocks", async function () {
diff --git a/test/Storage.test.js b/test/Storage.test.js
index b822e00..9221b95 100644
--- a/test/Storage.test.js
+++ b/test/Storage.test.js
@@ -2,10 +2,9 @@ const { expect } = require("chai")
 const { ethers, deployments } = require("hardhat")
 const { hashRequest, hashBid, sign } = require("./marketplace")
 const { exampleRequest, exampleBid } = require("./examples")
-const { mineBlock, minedBlockNumber } = require ("./mining")
+const { mineBlock, minedBlockNumber } = require("./mining")
 
 describe("Storage", function () {
-
   const request = exampleRequest()
   const bid = exampleBid()
 
@@ -15,10 +14,10 @@ describe("Storage", function () {
   let stakeAmount, slashMisses, slashPercentage
 
   beforeEach(async function () {
-    [client, host] = await ethers.getSigners()
-    await deployments.fixture(['TestToken', 'Storage'])
-    token = await ethers.getContract('TestToken')
-    storage = await ethers.getContract('Storage')
+    ;[client, host] = await ethers.getSigners()
+    await deployments.fixture(["TestToken", "Storage"])
+    token = await ethers.getContract("TestToken")
+    storage = await ethers.getContract("Storage")
     await token.mint(client.address, 1000)
     await token.mint(host.address, 1000)
     stakeAmount = await storage.stakeAmount()
@@ -27,7 +26,6 @@ describe("Storage", function () {
   })
 
   describe("creating a new storage contract", function () {
-
     let id
 
     beforeEach(async function () {
@@ -35,7 +33,7 @@ describe("Storage", function () {
       await token.connect(client).approve(storage.address, bid.price)
       await storage.connect(host).increaseStake(stakeAmount)
       let requestHash = hashRequest(request)
-      let bidHash = hashBid({...bid, requestHash})
+      let bidHash = hashBid({ ...bid, requestHash })
       await storage.newContract(
         request.duration,
         request.size,
@@ -60,16 +58,16 @@ describe("Storage", function () {
       expect(await storage.proofTimeout(id)).to.equal(request.proofTimeout)
       expect(await storage.price(id)).to.equal(bid.price)
       expect(await storage.host(id)).to.equal(await host.getAddress())
-  })
+    })
 
     it("locks up host stake", async function () {
-      await expect(
-        storage.connect(host).withdrawStake()
-      ).to.be.revertedWith("Stake locked")
+      await expect(storage.connect(host).withdrawStake()).to.be.revertedWith(
+        "Stake locked"
+      )
     })
 
     describe("starting the contract", function () {
-      it("starts requiring storage proofs", async function (){
+      it("starts requiring storage proofs", async function () {
         await storage.connect(host).startContract(id)
         expect(await storage.proofEnd(id)).to.be.gt(0)
       })
@@ -87,14 +85,13 @@ describe("Storage", function () {
     })
 
     describe("finishing the contract", function () {
-
       beforeEach(async function () {
         await storage.connect(host).startContract(id)
       })
 
       async function mineUntilEnd() {
         const end = await storage.proofEnd(id)
-        while (await minedBlockNumber() < end) {
+        while ((await minedBlockNumber()) < end) {
           await mineBlock()
         }
       }
@@ -114,28 +111,27 @@ describe("Storage", function () {
       })
 
       it("is only allowed when end time has passed", async function () {
-        await expect(
-          storage.finishContract(id)
-        ).to.be.revertedWith("Contract has not ended yet")
+        await expect(storage.finishContract(id)).to.be.revertedWith(
+          "Contract has not ended yet"
+        )
       })
 
       it("can only be done once", async function () {
         await mineUntilEnd()
         await storage.finishContract(id)
-        await expect(
-          storage.finishContract(id)
-        ).to.be.revertedWith("Contract already finished")
+        await expect(storage.finishContract(id)).to.be.revertedWith(
+          "Contract already finished"
+        )
       })
     })
 
     describe("slashing when missing proofs", function () {
-
       async function ensureProofIsMissing() {
-        while (!await storage.isProofRequired(id, await minedBlockNumber())) {
+        while (!(await storage.isProofRequired(id, await minedBlockNumber()))) {
           mineBlock()
         }
         const blocknumber = await minedBlockNumber()
-        for (let i=0; i<request.proofTimeout; i++) {
+        for (let i = 0; i < request.proofTimeout; i++) {
           mineBlock()
         }
         await storage.markProofAsMissing(id, blocknumber)
@@ -143,12 +139,12 @@ describe("Storage", function () {
 
       it("reduces stake when too many proofs are missing", async function () {
         await storage.connect(host).startContract(id)
-        for (let i=0; i<slashMisses; i++) {
+        for (let i = 0; i < slashMisses; i++) {
           await ensureProofIsMissing()
         }
-        const expectedStake = stakeAmount * (100 - slashPercentage) / 100
+        const expectedStake = (stakeAmount * (100 - slashPercentage)) / 100
         expect(await storage.stake(host.address)).to.equal(expectedStake)
-    })
+      })
     })
   })
 
@@ -157,20 +153,22 @@ describe("Storage", function () {
     await token.connect(client).approve(storage.address, bid.price)
     await storage.connect(host).increaseStake(stakeAmount - 1)
     let requestHash = hashRequest(request)
-    let bidHash = hashBid({...bid, requestHash})
-    await expect(storage.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      bid.bidExpiry,
-      await sign(client, requestHash),
-      await sign(host, bidHash)
-    )).to.be.revertedWith("Insufficient stake")
+    let bidHash = hashBid({ ...bid, requestHash })
+    await expect(
+      storage.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        bid.bidExpiry,
+        await sign(client, requestHash),
+        await sign(host, bidHash)
+      )
+    ).to.be.revertedWith("Insufficient stake")
   })
 
   it("doesn't create contract without payment of price", async function () {
@@ -178,20 +176,22 @@ describe("Storage", function () {
     await token.connect(client).approve(storage.address, bid.price - 1)
     await storage.connect(host).increaseStake(stakeAmount)
     let requestHash = hashRequest(request)
-    let bidHash = hashBid({...bid, requestHash})
-    await expect(storage.newContract(
-      request.duration,
-      request.size,
-      request.contentHash,
-      request.proofPeriod,
-      request.proofTimeout,
-      request.nonce,
-      bid.price,
-      await host.getAddress(),
-      bid.bidExpiry,
-      await sign(client, requestHash),
-      await sign(host, bidHash)
-    )).to.be.revertedWith("ERC20: transfer amount exceeds allowance")
+    let bidHash = hashBid({ ...bid, requestHash })
+    await expect(
+      storage.newContract(
+        request.duration,
+        request.size,
+        request.contentHash,
+        request.proofPeriod,
+        request.proofTimeout,
+        request.nonce,
+        bid.price,
+        await host.getAddress(),
+        bid.bidExpiry,
+        await sign(client, requestHash),
+        await sign(host, bidHash)
+      )
+    ).to.be.revertedWith("ERC20: transfer amount exceeds allowance")
   })
 })
 
diff --git a/test/examples.js b/test/examples.js
index ba99ced..cf1a8ba 100644
--- a/test/examples.js
+++ b/test/examples.js
@@ -6,12 +6,12 @@ const exampleRequest = () => ({
   contentHash: ethers.utils.sha256("0xdeadbeef"),
   proofPeriod: 8, // 8 blocks ≈ 2 minutes
   proofTimeout: 4, // 4 blocks ≈ 1 minute
-  nonce: ethers.utils.randomBytes(32)
+  nonce: ethers.utils.randomBytes(32),
 })
 
 const exampleBid = () => ({
   price: 42,
-  bidExpiry: Math.round(Date.now() / 1000) + 60 * 60 // 1 hour from now
+  bidExpiry: Math.round(Date.now() / 1000) + 60 * 60, // 1 hour from now
 })
 
 module.exports = { exampleRequest, exampleBid }
diff --git a/test/marketplace.js b/test/marketplace.js
index fc89306..7b9e930 100644
--- a/test/marketplace.js
+++ b/test/marketplace.js
@@ -1,21 +1,30 @@
 const { ethers } = require("hardhat")
 
 function hashRequest({
-  duration, size, contentHash, proofPeriod, proofTimeout, nonce
+  duration,
+  size,
+  contentHash,
+  proofPeriod,
+  proofTimeout,
+  nonce,
 }) {
   const type = "[dagger.request.v1]"
-  return ethers.utils.keccak256(ethers.utils.defaultAbiCoder.encode(
-    ["string", "uint", "uint", "bytes32", "uint", "uint", "bytes32"],
-    [type, duration, size, contentHash, proofPeriod, proofTimeout, nonce]
-  ))
+  return ethers.utils.keccak256(
+    ethers.utils.defaultAbiCoder.encode(
+      ["string", "uint", "uint", "bytes32", "uint", "uint", "bytes32"],
+      [type, duration, size, contentHash, proofPeriod, proofTimeout, nonce]
+    )
+  )
 }
 
-function hashBid({requestHash, bidExpiry, price}) {
+function hashBid({ requestHash, bidExpiry, price }) {
   const type = "[dagger.bid.v1]"
-  return ethers.utils.keccak256(ethers.utils.defaultAbiCoder.encode(
-    ["string", "bytes32", "uint", "uint"],
-    [type, requestHash, bidExpiry, price]
-  ))
+  return ethers.utils.keccak256(
+    ethers.utils.defaultAbiCoder.encode(
+      ["string", "bytes32", "uint", "uint"],
+      [type, requestHash, bidExpiry, price]
+    )
+  )
 }
 
 async function sign(signer, hash) {