# MoCExchange View Source: [contracts/MoCExchange.sol](https://github.com/money-on-chain/main-RBTC-contract/blob/master-gitbook/contracts/MoCExchange.sol) **↗ Extends:** [**MoCExchangeEvents**](https://github.com/money-on-chain/main-RBTC-contract/blob/master-gitbook/docs/abis/MoCExchangeEvents.md)**,** [**MoCBase**](https://github.com/money-on-chain/main-RBTC-contract/blob/master-gitbook/docs/abis/MoCBase.md)**,** [**MoCLibConnection**](/main-rbtc-contract/smart-contracts/abis-documentation/moclibconnection.md)**,** [**IMoCExchange**](https://github.com/money-on-chain/main-RBTC-contract/blob/master-gitbook/docs/abis/IMoCExchange.md) **MoCExchange** - version: 0.1.12 ## Structs ### RiskProxRedeemStruct ```js struct RiskProxRedeemStruct { uint256 totalBtcRedeemed, uint256 btcTotalWithoutCommission, uint256 rbtcInterests, uint256 bucketLev, uint256 bproxToRedeem, uint256 rbtcToRedeem, uint256 bproxPrice, struct MoCExchange.CommissionReturnStruct commission } ``` ### RiskProxMintStruct ```js struct RiskProxMintStruct { uint256 bproxToMint, uint256 finalBtcToMint, uint256 btcInterestAmount, uint256 lev, struct MoCExchange.CommissionReturnStruct commission } ``` ### RiskProRedeemStruct ```js struct RiskProRedeemStruct { uint256 bproFinalAmount, uint256 btcTotalWithoutCommission, struct MoCExchange.CommissionReturnStruct commission } ``` ### FreeStableTokenRedeemStruct ```js struct FreeStableTokenRedeemStruct { uint256 finalDocAmount, uint256 finalBtcAmount, uint256 btcInterestAmount, struct MoCExchange.CommissionReturnStruct commission } ``` ### RiskProMintStruct ```js struct RiskProMintStruct { uint256 bproRegularPrice, uint256 btcValue, uint256 discountPrice, uint256 bproDiscountAmount, uint256 regularBProAmount, uint256 availableBPro, uint256 finalBProAmount, struct MoCExchange.CommissionReturnStruct commission } ``` ### StableTokenMintStruct ```js struct StableTokenMintStruct { uint256 docs, uint256 docAmount, uint256 totalCost, struct MoCExchange.CommissionReturnStruct commission } ``` ### CommissionParamsStruct ```js struct CommissionParamsStruct { address account, uint256 amount, uint8 txTypeFeesMOC, uint8 txTypeFeesRBTC, address vendorAccount } ``` ### CommissionReturnStruct ```js struct CommissionReturnStruct { uint256 btcCommission, uint256 mocCommission, uint256 btcPrice, uint256 mocPrice, uint256 btcMarkup, uint256 mocMarkup } ``` ### StableTokenRedeemStruct ```js struct StableTokenRedeemStruct { uint256 reserveTotal, uint256 btcToRedeem, uint256 totalBtc, struct MoCExchange.CommissionReturnStruct commission } ``` ## Contract Members **Constants & Variables** ```js contract IMoCState internal mocState; ``` *** ```js address internal DEPRECATED_mocConverter; ``` *** ```js contract MoCBProxManager internal bproxManager; ``` *** ```js contract BProToken internal bproToken; ``` *** ```js contract DocToken internal docToken; ``` *** ```js contract IMoCInrate internal mocInrate; ``` *** ```js contract IMoC internal moc; ``` *** ```js uint256[50] private upgradeGap; ``` *** ## RiskProMint **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | commission | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## RiskProWithDiscountMint **Parameters** | Name | Type | Description | | -------------------- | ------- | ----------- | | riskProTecPrice | uint256 | | | riskProDiscountPrice | uint256 | | | amount | uint256 | | ## RiskProRedeem **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | commission | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## StableTokenMint **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | commission | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## StableTokenRedeem **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | commission | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## FreeStableTokenRedeem **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | commission | uint256 | | | interests | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## RiskProxMint **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | bucket | bytes32 | | | account | address | | | amount | uint256 | | | reserveTotal | uint256 | | | interests | uint256 | | | leverage | uint256 | | | commission | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## RiskProxRedeem **Parameters** | Name | Type | Description | | ------------------ | ------- | ----------- | | bucket | bytes32 | | | account | address | | | commission | uint256 | | | amount | uint256 | | | reserveTotal | uint256 | | | interests | uint256 | | | leverage | uint256 | | | reservePrice | uint256 | | | mocCommissionValue | uint256 | | | mocPrice | uint256 | | | btcMarkup | uint256 | | | mocMarkup | uint256 | | | vendorAccount | address | | ## Functions * [initialize(address connectorAddress)](#initialize) * [getMoCTokenBalance(address owner, address spender)](#getmoctokenbalance) * [calculateCommissionsWithPrices(struct MoCExchange.CommissionParamsStruct params)](#calculatecommissionswithprices) * [bproDiscToBtc(uint256 bproAmount, uint256 bproTecPrice, uint256 bproDiscountRate)](#bprodisctobtc) * [mintBPro(address account, uint256 btcAmount, address vendorAccount)](#mintbpro) * [redeemBPro(address account, uint256 bproAmount, address vendorAccount)](#redeembpro) * [redeemFreeDoc(address account, uint256 docAmount, address vendorAccount)](#redeemfreedoc) * [mintDoc(address account, uint256 btcToMint, address vendorAccount)](#mintdoc) * [redeemDocWithPrice(address payable userAddress, uint256 amount, uint256 btcPrice)](#redeemdocwithprice) * [redeemAllDoc(address origin, address payable destination)](#redeemalldoc) * [mintBProx(address payable account, bytes32 bucket, uint256 btcToMint, address vendorAccount)](#mintbprox) * [redeemBProx(address payable account, bytes32 bucket, uint256 bproxAmount, address vendorAccount)](#redeembprox) * [forceRedeemBProx(bytes32 bucket, address payable account, uint256 bproxAmount, uint256 bproxPrice)](#forceredeembprox) * [burnBProxFor(bytes32 bucket, address payable account, uint256 bproxAmount, uint256 bproxPrice)](#burnbproxfor) * [redeemBProxInternal(address account, bytes32 bucket, uint256 bproxAmount, struct MoCExchange.RiskProxRedeemStruct details, address vendorAccount)](#redeembproxinternal) * [mintBProInternal(address account, uint256 btcAmount, struct MoCExchange.RiskProMintStruct details, address vendorAccount)](#mintbprointernal) * [mintBProxInternal(address account, bytes32 bucket, struct MoCExchange.RiskProxMintStruct details, address vendorAccount)](#mintbproxinternal) * [mintDocInternal(address account, struct MoCExchange.StableTokenMintStruct details, address vendorAccount)](#mintdocinternal) * [redeemFreeDocInternal(address account, struct MoCExchange.FreeStableTokenRedeemStruct details, address vendorAccount)](#redeemfreedocinternal) * [redeemBProInternal(address account, struct MoCExchange.RiskProRedeemStruct details, address vendorAccount)](#redeembprointernal) * [redeemDocWithPriceInternal(address account, uint256 amount, struct MoCExchange.StableTokenRedeemStruct details, address vendorAccount)](#redeemdocwithpriceinternal) * [moveExtraFundsToBucket(bytes32 bucketFrom, bytes32 bucketTo, uint256 totalBtc, uint256 lev)](#moveextrafundstobucket) * [recoverInterests(bytes32 bucket, uint256 rbtcToRedeem)](#recoverinterests) * [doDocRedeem(address userAddress, uint256 docAmount, uint256 totalBtc)](#dodocredeem) * [initializeContracts()](#initializecontracts) ### initialize Initializes the contract ```js function initialize(address connectorAddress) public nonpayable initializer ``` **Arguments** | Name | Type | Description | | ---------------- | ------- | ----------------------------- | | connectorAddress | address | MoCConnector contract address | ### getMoCTokenBalance ⤾ overrides IMoCExchange.getMoCTokenBalance Converts MoC commission from RBTC to MoC price ```js function getMoCTokenBalance(address owner, address spender) public view returns(mocBalance uint256, mocAllowance uint256) ``` **Returns** MoC balance of owner and MoC allowance of spender **Arguments** | Name | Type | Description | | ------- | ------- | ------------------------ | | owner | address | address of token owner | | spender | address | address of token spender | ### calculateCommissionsWithPrices Calculates commissions in MoC and BTC ```js function calculateCommissionsWithPrices(struct MoCExchange.CommissionParamsStruct params) public view returns(ret struct MoCExchange.CommissionReturnStruct) ``` **Returns** Commissions calculated in MoC price and bitcoin price; and Bitcoin and MoC prices **Arguments** | Name | Type | Description | | ------ | ----------------------------------------- | ---------------------------------------- | | params | struct MoCExchange.CommissionParamsStruct | Params defined in CommissionParamsStruct | ### bproDiscToBtc BTC equivalent for the amount of bpro given applying the spotDiscountRate ```js function bproDiscToBtc(uint256 bproAmount, uint256 bproTecPrice, uint256 bproDiscountRate) internal view returns(uint256) ``` **Returns** BTC amount **Arguments** | Name | Type | Description | | ---------------- | ------- | ----------------------------------------------------- | | bproAmount | uint256 | amount of BPro \[using mocPrecision] | | bproTecPrice | uint256 | price of BPro without discounts \[using mocPrecision] | | bproDiscountRate | uint256 | BPro discounts \[using mocPrecision] | ### mintBPro ⤾ overrides IMoCExchange.mintBPro Mint BPros and give it to the msg.sender ```js function mintBPro(address account, uint256 btcAmount, address vendorAccount) external nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Arguments** | Name | Type | Description | | ------------- | ------- | --------------------- | | account | address | Address of minter | | btcAmount | uint256 | Amount in BTC to mint | | vendorAccount | address | Vendor address | ### redeemBPro ⤾ overrides IMoCExchange.redeemBPro Sender burns his BProS and redeems the equivalent BTCs ```js function redeemBPro(address account, uint256 bproAmount, address vendorAccount) public nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Returns** bitcoins to transfer to the redeemer and commission spent (in BTC and MoC), using \[using reservePrecision] **Arguments** | Name | Type | Description | | ------------- | ------- | ------------------------------ | | account | address | Address of the redeeemer | | bproAmount | uint256 | Amount of BPros to be redeemed | | vendorAccount | address | Vendor address | ### redeemFreeDoc ⤾ overrides IMoCExchange.redeemFreeDoc Redeems the requested amount for the account, or the max amount of free docs possible. ```js function redeemFreeDoc(address account, uint256 docAmount, address vendorAccount) public nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Returns** bitcoins to transfer to the redeemer and commission spent (in BTC and MoC), using \[using reservePrecision] **Arguments** | Name | Type | Description | | ------------- | ------- | ---------------------------------------------- | | account | address | Address of the redeeemer | | docAmount | uint256 | Amount of Docs to redeem \[using mocPrecision] | | vendorAccount | address | Vendor address | ### mintDoc ⤾ overrides IMoCExchange.mintDoc Mint Max amount of Docs and give it to the msg.sender ```js function mintDoc(address account, uint256 btcToMint, address vendorAccount) public nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Returns** the actual amount of btc used and the btc commission (in BTC and MoC) for them \[using rbtPresicion] **Arguments** | Name | Type | Description | | ------------- | ------- | ------------------------------------------------------------------- | | account | address | minter user address | | btcToMint | uint256 | btc amount the user intents to convert to DoC \[using rbtPresicion] | | vendorAccount | address | Vendor address | ### redeemDocWithPrice ⤾ overrides IMoCExchange.redeemDocWithPrice User DoCs get burned and he receives the equivalent BTCs in return ```js function redeemDocWithPrice(address payable userAddress, uint256 amount, uint256 btcPrice) public nonpayable onlyWhitelisted returns(bool, uint256) ``` **Returns** true and commission spent (in BTC and MoC) if btc send was completed, false if fails. **Arguments** | Name | Type | Description | | ----------- | --------------- | ------------------------------------------------------------ | | userAddress | address payable | Address of the user asking to redeem | | amount | uint256 | Verified amount of Docs to be redeemed \[using mocPrecision] | | btcPrice | uint256 | bitcoin price \[using mocPrecision] | ### redeemAllDoc ⤾ overrides IMoCExchange.redeemAllDoc Allow redeem on liquidation state, user DoCs get burned and he receives the equivalent RBTCs according to liquidationPrice ```js function redeemAllDoc(address origin, address payable destination) public nonpayable onlyWhitelisted returns(uint256) ``` **Returns** The amount of RBTC in sent for the redemption or 0 if send does not succed **Arguments** | Name | Type | Description | | ----------- | --------------- | ------------------------- | | origin | address | address owner of the DoCs | | destination | address payable | address to send the RBTC | ### mintBProx > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. > ⚠ See the [approved technical proposal](https://forum.moneyonchain.com/t/technical-proposal-for-removal-of-leveraged-positions/308#technical-proposal-for-removal-of-leveraged-positions-1) to understand how the behavior of this function has changed. ⤾ overrides IMoCExchange.mintBProx BUCKET Bprox minting. Mints Bprox for the specified bucket ```js function mintBProx(address payable account, bytes32 bucket, uint256 btcToMint, address vendorAccount) public nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Returns** total RBTC Spent (btcToMint more interest) and commission spent (in BTC and MoC) \[using reservePrecision] **Arguments** | Name | Type | Description | | ------------- | --------------- | --------------------------------------------- | | account | address payable | owner of the new minted Bprox | | bucket | bytes32 | bucket name | | btcToMint | uint256 | rbtc amount to mint \[using reservePrecision] | | vendorAccount | address | Vendor address | ### redeemBProx > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. ⤾ overrides IMoCExchange.redeemBProx Sender burns his BProx, redeems the equivalent amount of BPros, return the "borrowed" DOCs and recover pending interests ```js function redeemBProx(address payable account, bytes32 bucket, uint256 bproxAmount, address vendorAccount) public nonpayable onlyWhitelisted returns(uint256, uint256, uint256, uint256, uint256) ``` **Returns** the actual amount of btc to redeem and the btc commission (in BTC and MoC) for them \[using reservePrecision] **Arguments** | Name | Type | Description | | ------------- | --------------- | ----------------------------------------------------- | | account | address payable | user address to redeem bprox from | | bucket | bytes32 | Bucket where the BProxs are hold | | bproxAmount | uint256 | Amount of BProxs to be redeemed \[using mocPrecision] | | vendorAccount | address | Vendor address | ### forceRedeemBProx > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. ⤾ overrides IMoCExchange.forceRedeemBProx Burns user BProx and sends the equivalent amount of RBTC to the account without caring if transaction succeeds ```js function forceRedeemBProx(bytes32 bucket, address payable account, uint256 bproxAmount, uint256 bproxPrice) public nonpayable onlyWhitelisted returns(bool) ``` **Returns** result of the RBTC sending transaction \[using reservePrecision] **Arguments** | Name | Type | Description | | ----------- | --------------- | ---------------------------------------------------- | | bucket | bytes32 | Bucket where the BProxs are hold | | account | address payable | user address to redeem bprox from | | bproxAmount | uint256 | Amount of BProx to redeem \[using mocPrecision] | | bproxPrice | uint256 | Price of one BProx in RBTC \[using reservePrecision] | ### burnBProxFor > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. Burns user BProx ```js function burnBProxFor(bytes32 bucket, address payable account, uint256 bproxAmount, uint256 bproxPrice) public nonpayable onlyWhitelisted returns(uint256) ``` **Returns** Bitcoin total value of the redemption \[using reservePrecision] **Arguments** | Name | Type | Description | | ----------- | --------------- | ---------------------------------------------------- | | bucket | bytes32 | Bucket where the BProxs are hold | | account | address payable | user address to redeem bprox from | | bproxAmount | uint256 | Amount of BProx to redeem \[using mocPrecision] | | bproxPrice | uint256 | Price of one BProx in RBTC \[using reservePrecision] | ### redeemBProxInternal > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. Internal function to avoid stack too deep errors ```js function redeemBProxInternal(address account, bytes32 bucket, uint256 bproxAmount, struct MoCExchange.RiskProxRedeemStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | --------------------------------------- | ----------- | | account | address | | | bucket | bytes32 | | | bproxAmount | uint256 | | | details | struct MoCExchange.RiskProxRedeemStruct | | | vendorAccount | address | | ### mintBProInternal Internal function to avoid stack too deep errors ```js function mintBProInternal(address account, uint256 btcAmount, struct MoCExchange.RiskProMintStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | ------------------------------------ | ----------- | | account | address | | | btcAmount | uint256 | | | details | struct MoCExchange.RiskProMintStruct | | | vendorAccount | address | | ### mintBProxInternal > ⚠ This has been deprecated since the [Proposal to remove leveraged positions](https://forum.moneyonchain.com/t/removal-of-leveraged-positions/298) from the protocol was **approved**, however it is necessary to maintain the contracts and their documentation for legacy support. > ⚠ See the [approved technical proposal](https://forum.moneyonchain.com/t/technical-proposal-for-removal-of-leveraged-positions/308#technical-proposal-for-removal-of-leveraged-positions-1) to understand how the behavior of this function has changed. Internal function to avoid stack too deep errors ```js function mintBProxInternal(address account, bytes32 bucket, struct MoCExchange.RiskProxMintStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | ------------------------------------- | ----------- | | account | address | | | bucket | bytes32 | | | details | struct MoCExchange.RiskProxMintStruct | | | vendorAccount | address | | ### mintDocInternal Internal function to avoid stack too deep errors ```js function mintDocInternal(address account, struct MoCExchange.StableTokenMintStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | ---------------------------------------- | ----------- | | account | address | | | details | struct MoCExchange.StableTokenMintStruct | | | vendorAccount | address | | ### redeemFreeDocInternal Internal function to avoid stack too deep errors ```js function redeemFreeDocInternal(address account, struct MoCExchange.FreeStableTokenRedeemStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | ---------------------------------------------- | ----------- | | account | address | | | details | struct MoCExchange.FreeStableTokenRedeemStruct | | | vendorAccount | address | | ### redeemBProInternal Internal function to avoid stack too deep errors ```js function redeemBProInternal(address account, struct MoCExchange.RiskProRedeemStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | -------------------------------------- | ----------- | | account | address | | | details | struct MoCExchange.RiskProRedeemStruct | | | vendorAccount | address | | ### redeemDocWithPriceInternal Internal function to avoid stack too deep errors ```js function redeemDocWithPriceInternal(address account, uint256 amount, struct MoCExchange.StableTokenRedeemStruct details, address vendorAccount) internal nonpayable ``` **Arguments** | Name | Type | Description | | ------------- | ------------------------------------------ | ----------- | | account | address | | | amount | uint256 | | | details | struct MoCExchange.StableTokenRedeemStruct | | | vendorAccount | address | | ### moveExtraFundsToBucket Calculates the amount of RBTC that one bucket should move to another in BProx minting/redemption. This extra makes BProx more leveraging than BPro. ```js function moveExtraFundsToBucket(bytes32 bucketFrom, bytes32 bucketTo, uint256 totalBtc, uint256 lev) internal nonpayable ``` **Arguments** | Name | Type | Description | | ---------- | ------- | -------------------------------------------------------------- | | bucketFrom | bytes32 | Origin bucket from which the BTC are moving | | bucketTo | bytes32 | Destination bucket to which the BTC are moving | | totalBtc | uint256 | Amount of BTC moving between buckets \[using reservePrecision] | | lev | uint256 | lev of the L bucket \[using mocPrecision] | ### recoverInterests Returns RBTCs for user in concept of interests refund ```js function recoverInterests(bytes32 bucket, uint256 rbtcToRedeem) internal nonpayable returns(uint256) ``` **Returns** Interests \[using reservePrecision] **Arguments** | Name | Type | Description | | ------------ | ------- | ------------------------------------------------------------ | | bucket | bytes32 | Bucket where the BProxs are hold | | rbtcToRedeem | uint256 | Total RBTC value of the redemption \[using reservePrecision] | ### doDocRedeem ```js function doDocRedeem(address userAddress, uint256 docAmount, uint256 totalBtc) internal nonpayable ``` **Arguments** | Name | Type | Description | | ----------- | ------- | ----------- | | userAddress | address | | | docAmount | uint256 | | | totalBtc | uint256 | | ### initializeContracts ```js function initializeContracts() internal nonpayable ``` **Arguments** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.moneyonchain.com/main-rbtc-contract/smart-contracts/abis-documentation/mocexchange.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.