diff --git a/contracts/Marketplace.sol b/contracts/Marketplace.sol
index d9c0ecd..8c47063 100644
--- a/contracts/Marketplace.sol
+++ b/contracts/Marketplace.sol
@@ -318,6 +318,31 @@ contract Marketplace is Collateral, Proofs {
     }
   }
 
+  function isProofRequired(SlotId slotId) public view returns (bool) {
+    if (!_slotAcceptsProofs(slotId)) {
+      return false;
+    }
+    return _isProofRequired(slotId);
+  }
+
+  function willProofBeRequired(SlotId slotId) public view returns (bool) {
+    if (!_slotAcceptsProofs(slotId)) {
+      return false;
+    }
+    return _willProofBeRequired(slotId);
+  }
+
+  function getChallenge(SlotId slotId) public view returns (bytes32) {
+    if (!_slotAcceptsProofs(slotId)) {
+      return bytes32(0);
+    }
+    return _getChallenge(slotId);
+  }
+
+  function getPointer(SlotId slotId) public view returns (uint8) {
+    return _getPointer(slotId);
+  }
+
   function _price(
     uint64 numSlots,
     uint256 duration,
diff --git a/contracts/Storage.sol b/contracts/Storage.sol
index 5e6aa40..7f6f616 100644
--- a/contracts/Storage.sol
+++ b/contracts/Storage.sol
@@ -35,31 +35,6 @@ contract Storage is Marketplace {
     minCollateralThreshold = _minCollateralThreshold;
   }
 
-  function isProofRequired(SlotId slotId) public view returns (bool) {
-    if (!_slotAcceptsProofs(slotId)) {
-      return false;
-    }
-    return _isProofRequired(slotId);
-  }
-
-  function willProofBeRequired(SlotId slotId) public view returns (bool) {
-    if (!_slotAcceptsProofs(slotId)) {
-      return false;
-    }
-    return _willProofBeRequired(slotId);
-  }
-
-  function getChallenge(SlotId slotId) public view returns (bytes32) {
-    if (!_slotAcceptsProofs(slotId)) {
-      return bytes32(0);
-    }
-    return _getChallenge(slotId);
-  }
-
-  function getPointer(SlotId slotId) public view returns (uint8) {
-    return _getPointer(slotId);
-  }
-
   function submitProof(SlotId slotId, bytes calldata proof) public {
     _submitProof(slotId, proof);
   }
diff --git a/test/Marketplace.test.js b/test/Marketplace.test.js
index b44234d..dd48569 100644
--- a/test/Marketplace.test.js
+++ b/test/Marketplace.test.js
@@ -1,9 +1,10 @@
 const { ethers } = require("hardhat")
 const { hexlify, randomBytes } = ethers.utils
 const { AddressZero } = ethers.constants
+const { BigNumber } = ethers
 const { expect } = require("chai")
 const { exampleRequest } = require("./examples")
-const { hours, minutes } = require("./time")
+const { periodic, hours, minutes } = require("./time")
 const { requestId, slotId, askToArray } = require("./ids")
 const {
   waitUntilCancelled,
@@ -17,14 +18,16 @@ const { price, pricePerSlot } = require("./price")
 const {
   snapshot,
   revert,
+  mine,
   ensureMinimumBlockHeight,
   advanceTime,
+  advanceTimeTo,
   currentTime,
 } = require("./evm")
 
 describe("Marketplace", function () {
   const collateral = 100
-  const proofPeriod = 30 * 60
+  const proofPeriod = 10
   const proofTimeout = 5
   const proofDowntime = 64
   const proof = hexlify(randomBytes(42))
@@ -674,6 +677,81 @@ describe("Marketplace", function () {
       )
     })
   })
+
+  describe("proof requirements", function () {
+    let period, periodOf, periodEnd
+
+    beforeEach(async function () {
+      period = (await marketplace.proofPeriod()).toNumber()
+      ;({ periodOf, periodEnd } = periodic(period))
+
+      switchAccount(client)
+      await token.approve(marketplace.address, price(request))
+      await marketplace.requestStorage(request)
+      switchAccount(host)
+      await token.approve(marketplace.address, collateral)
+      await marketplace.deposit(collateral)
+    })
+
+    async function waitUntilProofWillBeRequired(id) {
+      while (!(await marketplace.willProofBeRequired(id))) {
+        await mine()
+      }
+    }
+
+    async function waitUntilProofIsRequired(id) {
+      await advanceTimeTo(periodEnd(periodOf(await currentTime())))
+      while (
+        !(
+          (await marketplace.isProofRequired(id)) &&
+          (await marketplace.getPointer(id)) < 250
+        )
+      ) {
+        await advanceTime(period)
+      }
+    }
+
+    it("will not require proofs once cancelled", async function () {
+      const id = slotId(slot)
+      await marketplace.fillSlot(slot.request, slot.index, proof)
+      await waitUntilProofWillBeRequired(id)
+      await expect(await marketplace.willProofBeRequired(id)).to.be.true
+      await advanceTimeTo(request.expiry + 1)
+      await expect(await marketplace.willProofBeRequired(id)).to.be.false
+    })
+
+    it("does not require proofs once cancelled", async function () {
+      const id = slotId(slot)
+      await marketplace.fillSlot(slot.request, slot.index, proof)
+      await waitUntilProofIsRequired(id)
+      await expect(await marketplace.isProofRequired(id)).to.be.true
+      await advanceTimeTo(request.expiry + 1)
+      await expect(await marketplace.isProofRequired(id)).to.be.false
+    })
+
+    it("does not provide challenges once cancelled", async function () {
+      const id = slotId(slot)
+      await marketplace.fillSlot(slot.request, slot.index, proof)
+      await waitUntilProofIsRequired(id)
+      const challenge1 = await marketplace.getChallenge(id)
+      expect(BigNumber.from(challenge1).gt(0))
+      await advanceTimeTo(request.expiry + 1)
+      const challenge2 = await marketplace.getChallenge(id)
+      expect(BigNumber.from(challenge2).isZero())
+    })
+
+    it("does not provide pointer once cancelled", async function () {
+      const id = slotId(slot)
+      await marketplace.fillSlot(slot.request, slot.index, proof)
+      await waitUntilProofIsRequired(id)
+      const challenge1 = await marketplace.getChallenge(id)
+      expect(BigNumber.from(challenge1).gt(0))
+      await advanceTimeTo(request.expiry + 1)
+      const challenge2 = await marketplace.getChallenge(id)
+      expect(BigNumber.from(challenge2).isZero())
+    })
+  })
+
   describe("modifiers", function () {
     beforeEach(async function () {
       switchAccount(client)
diff --git a/test/Storage.test.js b/test/Storage.test.js
index aeb6748..86a3780 100644
--- a/test/Storage.test.js
+++ b/test/Storage.test.js
@@ -1,10 +1,9 @@
 const { expect } = require("chai")
 const { ethers, deployments } = require("hardhat")
-const { BigNumber } = ethers
 const { hexlify, randomBytes } = ethers.utils
 const { AddressZero } = ethers.constants
 const { exampleRequest } = require("./examples")
-const { advanceTime, advanceTimeTo, currentTime, mine } = require("./evm")
+const { advanceTime, advanceTimeTo, currentTime } = require("./evm")
 const { requestId, slotId } = require("./ids")
 const { periodic } = require("./time")
 const { price } = require("./price")
@@ -88,6 +87,15 @@ describe("Storage", function () {
       }
     }
 
+    it("fails to mark proof as missing when cancelled", async function () {
+      await storage.fillSlot(slot.request, slot.index, proof)
+      await waitUntilCancelled(request)
+      let missedPeriod = periodOf(await currentTime())
+      await expect(
+        storage.markProofAsMissing(slotId(slot), missedPeriod)
+      ).to.be.revertedWith("Slot not accepting proofs")
+    })
+
     describe("slashing when missing proofs", function () {
       it("reduces collateral when too many proofs are missing", async function () {
         const id = slotId(slot)
@@ -130,82 +138,6 @@ describe("Storage", function () {
       })
     })
   })
-
-  describe("contract state", function () {
-    let period, periodOf, periodEnd
-
-    beforeEach(async function () {
-      period = (await storage.proofPeriod()).toNumber()
-      ;({ periodOf, periodEnd } = periodic(period))
-    })
-
-    async function waitUntilProofWillBeRequired(id) {
-      while (!(await storage.willProofBeRequired(id))) {
-        await mine()
-      }
-    }
-
-    async function waitUntilProofIsRequired(id) {
-      await advanceTimeTo(periodEnd(periodOf(await currentTime())))
-      while (
-        !(
-          (await storage.isProofRequired(id)) &&
-          (await storage.getPointer(id)) < 250
-        )
-      ) {
-        await advanceTime(period)
-      }
-    }
-
-    it("fails to mark proof as missing when cancelled", async function () {
-      await storage.fillSlot(slot.request, slot.index, proof)
-      await waitUntilCancelled(request)
-      let missedPeriod = periodOf(await currentTime())
-      await expect(
-        storage.markProofAsMissing(slotId(slot), missedPeriod)
-      ).to.be.revertedWith("Slot not accepting proofs")
-    })
-
-    it("will not require proofs once cancelled", async function () {
-      const id = slotId(slot)
-      await storage.fillSlot(slot.request, slot.index, proof)
-      await waitUntilProofWillBeRequired(id)
-      await expect(await storage.willProofBeRequired(id)).to.be.true
-      await advanceTimeTo(request.expiry + 1)
-      await expect(await storage.willProofBeRequired(id)).to.be.false
-    })
-
-    it("does not require proofs once cancelled", async function () {
-      const id = slotId(slot)
-      await storage.fillSlot(slot.request, slot.index, proof)
-      await waitUntilProofIsRequired(id)
-      await expect(await storage.isProofRequired(id)).to.be.true
-      await advanceTimeTo(request.expiry + 1)
-      await expect(await storage.isProofRequired(id)).to.be.false
-    })
-
-    it("does not provide challenges once cancelled", async function () {
-      const id = slotId(slot)
-      await storage.fillSlot(slot.request, slot.index, proof)
-      await waitUntilProofIsRequired(id)
-      const challenge1 = await storage.getChallenge(id)
-      expect(BigNumber.from(challenge1).gt(0))
-      await advanceTimeTo(request.expiry + 1)
-      const challenge2 = await storage.getChallenge(id)
-      expect(BigNumber.from(challenge2).isZero())
-    })
-
-    it("does not provide pointer once cancelled", async function () {
-      const id = slotId(slot)
-      await storage.fillSlot(slot.request, slot.index, proof)
-      await waitUntilProofIsRequired(id)
-      const challenge1 = await storage.getChallenge(id)
-      expect(BigNumber.from(challenge1).gt(0))
-      await advanceTimeTo(request.expiry + 1)
-      const challenge2 = await storage.getChallenge(id)
-      expect(BigNumber.from(challenge2).isZero())
-    })
-  })
 })
 
 // TODO: implement checking of actual proofs of storage, instead of dummy bool