,
+ pub start_time: u64,
+ pub end_time: u64,
+ pub approve: u64,
+ pub reject: u64,
+ pub status: u8,
+ pub hash: H256,
+}
+```
+
+The parameter hash should be the 32-byte hash of the topic hash.
+
+Response description:
+
+* gov_node_addr: Creator of the topic
+* topic_title: Topic title
+* topic_detail: Topic details
+* start_time: Start time for voting on the topic
+* end_time:End time for voting on the topic
+* approve amount: Total number of voters that approve the topic, sum of the weights of approving voters
+* reject amount: Total number of voters that reject the topic, sum of the weights of rejecting voters
+* status: Status of the topic, 0 represents cancelled, 1 represents normal
+* hash: Topic hash
+
+====voteTopic====
+
+
+fn vote_topic(hash: &H256, voter: Address, approve_or_reject: bool) -> bool {}
+
+
+Voters can invoke this method to approve or reject a topic.
+
+The parameter hash is the topic hash.
+The parameter voter is one of the `Gov` nodes.
+The parameter approveOrReject is a boolean value, true implies approve, false implies reject.
+
+
+====getVotedInfo====
+
+
+fn get_voted_info(hash: &H256, voter: &Address) -> u8{}
+
+
+Voters can invoke this method to query own voted Info, approve or reject.
+
+The parameter hash is the topic hash.
+The parameter voter is one of the voters set by an admin.
+
+Return value is 1 or 2, 1 means approve, 2 means reject, other means not voted
+
+====getVotedAddress====
+
+
+fn get_voted_address(hash: &H256) -> Vec {}
+
+
+Users can invoke this method to query all voted address and vote result of a topic.
+The parameter hash is the topic hash.
+
+Return value is array of all the address and vote result.
+
+====getTopicInfoListByAdmin====
+
+
+fn get_topic_info_list_by_addr(gov_node_addr: &Address) -> Vec{}
+
+
+Users can invoke this method to query all topicInfo of a admin.
+The parameter admin is the topic creator.
+
+Return value is array of topicInfo.
+
+
+===Events===
+
+====createTopic====
+
+
+CreateTopicEvent = RegisterAction("createTopic", "hash", "topic")
+
+
+The event must be triggered when topic are created.
+
+====VoteTopicEvent====
+
+
+VoteTopicEvent = RegisterAction("voteTopic", "hash", "voter")
+
+
+The event must be triggered on any successful calls to voteTopic.
+
+===Implementation===
\ No newline at end of file
diff --git a/OEPS/OEP-69.mediawiki b/OEPS/OEP-69.mediawiki
new file mode 100644
index 0000000..0367de8
--- /dev/null
+++ b/OEPS/OEP-69.mediawiki
@@ -0,0 +1,273 @@
+
+ OEP: 69
+ Title: DDXF Marketplace Standard
+ Author:
+ Type: Standard
+ Status: Accepted
+ Created: 2018-07-03
+
+
+==Abstract==
+
+
+
+==Motivation==
+
+
+==Specification==
+
+===Methods===
+
+====init====
+
+
+fn init(dtoken: Address, split_policy: Address) -> bool
+
+
+this method will store the default dtoken contract address and split_policy contract address.
+only the admin has the right to invoke this method.
+
+The parameters are of the following type:
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+|-
+| dtoken
+| Address
+|-
+| split_policy
+| Address
+|}
+
+====dtokenSellerPublish====
+
+
+pub fn dtoken_seller_publish(
+ resource_id: &[u8],
+ resource_ddo_bytes: &[u8],
+ item_bytes: &[u8],
+ split_policy_param_bytes: &[u8],
+) -> bool
+
+
+The seller publishes goods on the chain by calling this method.
+
+
+The parameters are of the following type:
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_id
+| &[u8]
+| used to mark the only commodity in the chain
+|-
+| resource_ddo_bytes
+| &[u8]
+| the result of ResourceDDO struct serialization
+|-
+| item_bytes
+| &[u8]
+| the result of DTokenItem struct serialization
+|-
+| split_policy_param_bytes
+| &[u8]
+| the result of RegisterParam struct serialization
+|}
+
+event
+
+["dtokenSellerPublish", resource_id, resource_ddo_bytes, item_bytes, split_policy_param_bytes]
+
+====update====
+
+
+fn update(
+ resource_id: &[u8],
+ resource_ddo_bytes: &[u8],
+ item_bytes: &[u8],
+ split_policy_param_bytes: &[u8],
+) -> bool
+
+
+The seller calls this method to update the information of the goods on the chain.
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_id
+| &[u8]
+| used to mark the only commodity in the chain
+|-
+| resource_ddo_bytes
+| &[u8]
+| the result of ResourceDDO struct serialization
+|-
+| item_bytes
+| &[u8]
+| the result of DTokenItem struct serialization
+|-
+| split_policy_param_bytes
+| &[u8]
+| the result of RegisterParam struct serialization
+|}
+
+
+event
+
+["update", resource_id, resource_ddo_bytes, item_bytes, split_policy_param_bytes]
+
+
+====delete====
+
+
+pub fn delete(resource_id: &[u8]) -> bool
+
+
+Sellers delete items on the chain
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_id
+| &[u8]
+| used to mark the only commodity in the chain
+|}
+
+
+event
+
+["delete", resource_id]
+
+
+
+====buyDToken====
+
+
+pub fn buy_dtoken(resource_id: &[u8], n: U128, buyer_account: &Address, payer: &Address) -> bool
+
+
+The buyer calls this method to purchase the goods on the chain
+
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_id
+| &[u8]
+| used to mark the only commodity in the chain
+|-
+| n
+| U128
+| the number of purchases
+|-
+| buyer_account
+| &Address
+| buyer's address
+|-
+| payer
+| &Address
+| Address to pay for the purchase
+|}
+
+event
+
+["buyDToken", resource_id, n, buyer_account, payer]
+
+====buyDTokens====
+
+
+pub fn buy_dtokens(
+ resource_ids: Vec>,
+ ns: Vec,
+ buyer_account: &Address,
+ payer: &Address,
+) -> bool
+
+
+buy more than one dtoken at a time
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_ids
+| Vec>
+| array of resource_id which used to mark the only commodity in the chain
+|-
+| ns
+| Vec
+| array of n which is the number of purchases. the length of resource_ids must be the same with the length of ns.
+|-
+| buyer_account
+| &Address
+| buyer's address
+|-
+| payer
+| &Address
+| Address to pay for the purchase
+|}
+
+event
+
+[
+["buyDToken", resource_id, n, buyer_account, payer],
+]
+
+====buyDTokenReward====
+
+
+pub fn buy_dtoken_reward(
+ resource_id: &[u8],
+ n: U128,
+ buyer_account: &Address,
+ payer: &Address,
+ unit_price: U128,
+) -> bool
+
+
+This method can only be called for items that the fee.count is 0, The buyer can reward the seller with any number of tokens.
+
+{| class = "wikitable"
+! style = "text-align:center;"| Parameter
+! Type
+! Desc
+|-
+| resource_id
+| &[u8]
+| used to mark the only commodity in the chain
+|-
+| n
+| U128
+| the number of purchases
+|-
+| buyer_account
+| &Address
+| buyer's address
+|-
+| payer
+| &Address
+| Address to pay for the purchase
+|-
+| unit_price
+| U128
+| unit price the buyer is willing to pay
+|}
+
+event
+
+["buyDToken", resource_id, n, buyer_account, payer, unit_price]
+
+===Implementation===
+
+[oep-69](https://github.com/ont-bizsuite/ddxf-contract-suite/tree/master/contracts/marketplace)
\ No newline at end of file