diff --git a/package.json b/package.json
index 63d53f2..b241b57 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "decamelize": "^1.2.0",
     "es6-promise": "^4.0.5",
     "fetch-ponyfill": "^4.0.0",
-    "five-bells-condition": "3.3.1",
+    "five-bells-condition": "^5.0.1",
     "isomorphic-fetch": "^2.2.1",
     "js-sha3": "^0.5.7",
     "js-utility-belt": "^1.5.0",
diff --git a/src/transaction/makeEd25519Condition.js b/src/transaction/makeEd25519Condition.js
index 1bdd0e3..3f0ff57 100644
--- a/src/transaction/makeEd25519Condition.js
+++ b/src/transaction/makeEd25519Condition.js
@@ -16,7 +16,7 @@ import ccJsonify from './utils/ccJsonify'
 export default function makeEd25519Condition(publicKey, json = true) {
     const publicKeyBuffer = new Buffer(base58.decode(publicKey))
 
-    const ed25519Fulfillment = new cc.Ed25519()
+    const ed25519Fulfillment = new cc.Ed25519Sha256()
     ed25519Fulfillment.setPublicKey(publicKeyBuffer)
 
     if (json) {
diff --git a/src/transaction/makeTransaction.js b/src/transaction/makeTransaction.js
index bcd118d..00c8ce2 100644
--- a/src/transaction/makeTransaction.js
+++ b/src/transaction/makeTransaction.js
@@ -9,7 +9,7 @@ function makeTransactionTemplate() {
         'inputs': [],
         'metadata': null,
         'asset': null,
-        'version': '0.9',
+        'version': '1.0',
     }
 }
 
diff --git a/src/transaction/signTransaction.js b/src/transaction/signTransaction.js
index 4faa888..32422a7 100644
--- a/src/transaction/signTransaction.js
+++ b/src/transaction/signTransaction.js
@@ -24,7 +24,7 @@ export default function signTransaction(transaction, ...privateKeys) {
         const privateKey = privateKeys[index]
         const privateKeyBuffer = new Buffer(base58.decode(privateKey))
         const serializedTransaction = serializeTransactionIntoCanonicalString(transaction)
-        const ed25519Fulfillment = new cc.Ed25519()
+        const ed25519Fulfillment = new cc.Ed25519Sha256()
         ed25519Fulfillment.sign(new Buffer(serializedTransaction), privateKeyBuffer)
         const fulfillmentUri = ed25519Fulfillment.serializeUri()
 
diff --git a/src/transaction/utils/ccJsonLoad.js b/src/transaction/utils/ccJsonLoad.js
index 1a3ac7c..5e9a02f 100644
--- a/src/transaction/utils/ccJsonLoad.js
+++ b/src/transaction/utils/ccJsonLoad.js
@@ -19,7 +19,7 @@ export default function ccJsonLoad(conditionJson) {
     } else {
         let fulfillment
 
-        if (conditionJson.type_id === 2) {
+        if (conditionJson.type === 'threshold-sha-256') {
             fulfillment = new cc.ThresholdSha256()
             fulfillment.threshold = conditionJson.threshold
             conditionJson.subfulfillments.forEach((subfulfillmentJson) => {
@@ -32,13 +32,8 @@ export default function ccJsonLoad(conditionJson) {
             })
         }
 
-        if (conditionJson.type_id === 0) {
-            fulfillment = new cc.PreimageSha256()
-            fulfillment.preimage = new Buffer(conditionJson.preimage)
-        }
-
-        if (conditionJson.type_id === 4) {
-            fulfillment = new cc.Ed25519()
+        if (conditionJson.type === 'ed25519-sha-256') {
+            fulfillment = new cc.Ed25519Sha256()
             fulfillment.publicKey = new Buffer(base58.decode(conditionJson.public_key))
             if (conditionJson.signature) {
                 fulfillment.signature = new Buffer(base58.decode(conditionJson.signature))
diff --git a/src/transaction/utils/ccJsonify.js b/src/transaction/utils/ccJsonify.js
index c80ec24..a33d0b6 100644
--- a/src/transaction/utils/ccJsonify.js
+++ b/src/transaction/utils/ccJsonify.js
@@ -33,13 +33,10 @@ export default function ccJsonify(fulfillment) {
     if (fulfillment.getTypeId() === 2) {
         return {
             'details': {
-                'type_id': 2,
-                'type': 'fulfillment',
-                'bitmask': fulfillment.getBitmask(),
+                'type': 'threshold-sha-256',
                 'threshold': fulfillment.threshold,
                 'subfulfillments': fulfillment.subconditions.map((subcondition) => {
                     const subconditionJson = ccJsonify(subcondition.body)
-                    subconditionJson.details.weight = 1
                     return subconditionJson.details
                 })
             },
@@ -48,13 +45,11 @@ export default function ccJsonify(fulfillment) {
     }
 
     if (fulfillment.getTypeId() === 4) {
-        jsonBody.details.type_id = 4
-        jsonBody.details.bitmask = 32
+        jsonBody.details.type = 'ed25519-sha-256'
 
         if ('publicKey' in fulfillment) {
             jsonBody.details.signature = null
             jsonBody.details.public_key = base58.encode(fulfillment.publicKey)
-            jsonBody.details.type = 'fulfillment'
         }
     }
 
diff --git a/test/transaction/test_cryptoconditions.js b/test/transaction/test_cryptoconditions.js
new file mode 100644
index 0000000..a60b87c
--- /dev/null
+++ b/test/transaction/test_cryptoconditions.js
@@ -0,0 +1,59 @@
+import test from 'ava'
+import cc from 'five-bells-condition'
+import { Ed25519Keypair, Transaction } from '../../src'
+
+
+test('Ed25519 condition encoding', t => {
+    const publicKey = '4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS'
+    const target = {
+        details: {
+            type: 'ed25519-sha-256',
+            public_key: publicKey,
+            signature: null,
+        },
+        uri: 'ni:///sha-256;uLdVX7FEjLWVDkAkfMAkEqPPwFqZj7qfiGE152t_x5c?fpt=ed25519-sha-256&cost=131072'
+    }
+    t.deepEqual(target, Transaction.makeEd25519Condition(publicKey))
+})
+
+
+test('Threshold condition encoding', t => {
+    const publicKey = '4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS'
+    const condition = Transaction.makeThresholdCondition(
+            1, [Transaction.makeEd25519Condition(publicKey, false)])
+    const target = {
+        details: {
+            type: 'threshold-sha-256',
+            threshold: 1,
+            subfulfillments: [{
+                type: 'ed25519-sha-256',
+                public_key: publicKey,
+                signature: null,
+            }]
+        },
+        uri: 'ni:///sha-256;VBIfZSoBprUQy-LVNAzaZ2q-eyWbrcPKtBg1PuNXIpQ?fpt=threshold-sha-256&cost=132096&subtypes=ed25519-sha-256'
+    }
+    t.deepEqual(target, condition)
+})
+
+
+test('Fulfillment correctly formed', t => {
+    const alice = new Ed25519Keypair()
+    const txCreate = Transaction.makeCreateTransaction(
+        {},
+        {},
+        [Transaction.makeOutput(Transaction.makeEd25519Condition(alice.publicKey))],
+        alice.publicKey
+    )
+    const txTransfer = Transaction.makeTransferTransaction(
+        txCreate,
+        {},
+        [Transaction.makeOutput(Transaction.makeEd25519Condition(alice.publicKey))],
+        [0]
+    )
+    const msg = Transaction.serializeTransactionIntoCanonicalString(txTransfer)
+    const txSigned = Transaction.signTransaction(txTransfer, alice.privateKey)
+    t.truthy(cc.validateFulfillment(txSigned.inputs[0].fulfillment,
+                                    txCreate.outputs[0].condition.uri,
+                                    new Buffer(msg)))
+})