[ "autonomous agent", { "bounce_fees": { "base": 10000 }, "init": "{ $HOUSE_CUT = 0.1; //We will take this cut on the debut of an NFT in our platform. We charge 0.1% for foreign NFTs. $FREEMARKET_CUT = 0.01; //We take 1% on every non-verified NFT trade $ARTIST_CUT = 0.01; //The artist will get 1% from every resale of their NFT $INVESTMENT_CUT = 0.01; //We take a 1% cut from all maecenas investments $HALF_HOUR = 1800; //30m = 1800s. An auction is extended by 1800s every time there is a new bid near the deadline $RESERVE_AMOUNT = 200000; //We will always keep > 200.000 in the AA $MIN_BID_INCREMENT = 0.0001;//Bids must be at least 0.01% higher than the previous one $ONE_MONTH = 2592000; $extendDeadLine = $NFT=>($NFT.soldAt <= timestamp + $HALF_HOUR) ? ($NFT || {soldAt: $NFT.soldAt + $HALF_HOUR}) : $NFT; //Extend the auction if there is a bid less than half an hour before the auction is closed /* ** Strips $NFT of computed fields to reduce AA's storage size */ $stripToken = $NFT=>{ delete($NFT, "isBanned"); delete($NFT, "cap"); delete($NFT, "mintedAt"); return $NFT; }; if (NOT trigger.data["method"]) bounce("method field is mandatory"); $method = trigger.data["method"]; $spendableFunds = balance["base"] - var["locked"] - storage_size - $RESERVE_AMOUNT; $owner = var["owner"]; $calculateSharesToBuy = ($price, $pool, $myShare)=>ln($price / ($pool * $myShare)) / ln($myShare); $_maecenasCurve = $x=>6969420 * $x^2; }", "getters": "{ $saleInfo = $NFT=>{ $unit = unit[$NFT]; $info = var["FREE_" || $NFT] OTHERWISE var["NFT_" || $NFT]; if (NOT $info) bounce("That NFT is not for sale or does not exist"); return $info || { cap: $unit.messages[[.app="asset"]].payload.cap, mintedAt: $unit.timestamp }; }; /* ** All the artist information */ $artistInfo = $artist=>var["artist_" || $artist]; $profile = $artist=>var["profile_" || $artist]; /* ** Example of a meta getter to enable platform interop */ $getNFTInfo = $NFT=>{ $unit = unit[$NFT]; /* ** Info should have at least 'author' field. 'ipfs' and 'type' field is also recommended. */ $info = var["FREE_" || $NFT] OTHERWISE var["NFT_" || $NFT]; $transferrable = $unit.messages[[.app="asset"]].payload.transferrable; if (NOT $transferrable)//Do not return info about non transferrable NFTs as they cannot get listed in other platforms return false; return $info || { cap: $unit.messages[[.app="asset"]].payload.cap, mintedAt: $unit.timestamp }; }; }", "messages": { "cases": [ { "if": "{ NOT $owner }", "messages": [ { "app": "state", "state": "{ var["owner"] = "IUU43O7TS2TBYKAPGKUARDZHOTAE275A"; //Set the Owner to my address var["helper"] = "IUU43O7TS2TBYKAPGKUARDZHOTAE275A"; var["locked"] = 0; //Bytes locked in bids are not withdrawable by the Owner }" } ] }, { "if": "{ trigger.address == $owner AND ($method == "payout" OR $method == "transferOwnership" OR $method == "setHelper" OR $method == "verifyProfile") }", "messages": { "cases": [ { "if": "{ $method == "payout" }", "messages": [ { "app": "payment", "payload": { "asset": "base", "outputs": [ { "address": "{trigger.address}", "amount": "{$spendableFunds}" } ] } } ] }, { "if": "{ $method == "verifyProfile" }", "init": "{ if (NOT trigger.data["artist"]) bounce("artist field is mandatory"); $prof = var["profile_" || trigger.data["artist"]]; }", "messages": [ { "app": "attestation", "payload": "{ { address: trigger.data["artist"], profile: $prof } }" }, { "app": "state", "state": "{ var["profile_" || trigger.data["artist"]] ||= {verified: true}; var["user_" || $prof.username] = trigger.data["artist"]; //Username is now taken }" } ] }, { "if": "{ $method == "transferOwnership" }", "init": "{ if (NOT trigger.data["newOwner"]) bounce("newOwner field is mandatory"); if (NOT is_valid_address(trigger.data["newOwner"])) bounce("newOwner field is not a valid address"); }", "messages": [ { "app": "payment", "payload": { "asset": "base", "outputs": [ { "address": "{trigger.address}", "amount": "{$spendableFunds}" } ] } }, { "app": "state", "state": "{ var["owner"] = trigger.data["newOwner"];//Ownership is transferred }" } ] }, { "if": "{ $method == "setHelper" }", "init": "{ if (NOT trigger.data["helper"]) bounce("helper field is mandatory"); }", "messages": [ { "app": "state", "state": "{ var["helper"] = trigger.data["helper"]; }" } ] } ] } }, { "if": "{ $method == "REGISTER" }", "init": "{ if (NOT exists(trigger.data["NFT"])) bounce("That NFT does not exist"); $definer = unit[trigger.data["NFT"]].authors[0]; if (NOT $definer) bounce("NFT field is not a known asset"); $meta = var[$definer]["NFT"]; //The NFT asset must be defined by the AA that holds its metadata if (NOT $meta) bounce("That NFT platform does not hold its metadata in a format compatible with ours"); }", "messages": [ { "app": "state", "state": "{ var["FREE_" || trigger.data["NFT"]] = $meta; }" } ] }, { "if": "{ (trigger.address == $owner OR trigger.address == var["helper"]) AND $method == "revoke" }", "init": "{ if (NOT trigger.data["NFT"]) bounce("NFT field is mandatory"); }", "messages": [ { "app": "data_feed", "payload": { "{trigger.data["NFT"]}": "REVOKED" } } ] }, { "if": "{ $method == "MINT" }", "init": "{ if (NOT trigger.data["amount"]) bounce("amount field is mandatory"); if (NOT is_valid_amount(trigger.data["amount"]) AND trigger.data["amount"] != 0) bounce("The amount of NFT copies to mint is not valid"); if (NOT trigger.data["type"]) bounce("type field is mandatory"); if (trigger.data["endTime"]){ if (trigger.data["endTime"] <= timestamp) bounce("The endTime cannot be set in the past"); } if ($owner != trigger.address){ //The owner reserves the right to post sales with longer deadlines if (trigger.data["endTime"] - timestamp > 2628000) //A bit more than 30 days bounce("You cannot set the end time in more than 30 days in the future"); } if (NOT trigger.data["title"]) bounce("title field is mandatory"); if (NOT trigger.data["ipfs"]) bounce("ipfs field is mandatory"); if (trigger.data["royalty"]){ if (NOT is_integer(trigger.data["royalty"])) bounce("royalty must be an integer"); if (trigger.data["royalty"] < 0 OR trigger.data["royalty"] > 40) bounce("royalty must be in the interval 0-40"); } $seller = trigger.data["seller"] OTHERWISE trigger.address; if (trigger.data["seller"] AND NOT is_valid_address(trigger.data["seller"])) //The owner has to specify who sells the NFT bounce("The seller address is not valid"); $prof = var["profile_" || trigger.address]; $key = $prof.verified ? "NFT_" : "FREE_"; }", "messages": { "cases": [ { "if": "{ trigger.data["amount"] == 1 }", "messages": [ { "app": "asset", "payload": { "cap": 1, "is_private": false, "is_transferrable": true, "auto_destroy": false, "fixed_denominations": false, "issued_by_definer_only": true, "cosigned_by_definer": false, "spender_attested": false } }, { "app": "data", "if": "{ var["recordToData"] }", "payload": { "asset": "{var["recordToData"]}", "name": "{trigger.data["title"] OTHERWISE "Untitled"}", "author": "{$seller}", "ipfs": "{trigger.data["ipfs"]}", "type": "{trigger.data["type"]}", "decimals": 0 } }, { "app": "state", "state": "{ var[$key || response_unit] = { bid: 20000, //Max current bid (a NFT can have this field because it was resold. Check for price field instead) bids: 0, type: trigger.data["type"], by: $seller, royalty: trigger.data["royalty"] OTHERWISE 0, at: timestamp, //Max bid time ipfs: trigger.data["ipfs"], //Hash of the content author: $seller, //The original seller soldAt: trigger.data["endTime"] OTHERWISE timestamp + $ONE_MONTH, //End of the auction soldBy: $seller //Who is currently selling the NFT }; var["recordToData"] = response_unit; }" } ] }, { "init": "{ $price = trigger.data["price"]; if (NOT $price) bounce("price field is mandatory if you intend to sell more than one NFT copy"); if ($price < 20000) bounce("The minium price is 20000 bytes"); if (NOT is_valid_amount($price)) bounce("price is not valid"); }", "messages": [ { "app": "asset", "if": "{ trigger.data["amount"] == 0 //Uncapped asset, no more units can be issued after endTime }", "payload": { "is_private": false, "is_transferrable": true, "auto_destroy": false, "fixed_denominations": false, "issued_by_definer_only": true, "cosigned_by_definer": false, "spender_attested": false } }, { "app": "asset", "if": "{ trigger.data["amount"] > 0 }", "payload": { "cap": "{trigger.data["amount"]}", "is_private": false, "is_transferrable": true, "auto_destroy": false, "fixed_denominations": false, "issued_by_definer_only": true, "cosigned_by_definer": false, "spender_attested": false } }, { "app": "state", "state": "{ var[$key || response_unit] = { price: $price, //Sale price (this field is only present if the first sale was a fixed price one) type: trigger.data["type"], at: timestamp, royalty: trigger.data["royalty"] OTHERWISE 0, //Max bid time ipfs: trigger.data["ipfs"], //Hash of the content unitsSold: 0, author: $seller, //The original seller soldAt: trigger.data["endTime"] OTHERWISE timestamp + $ONE_MONTH, //End of the auction soldBy: $seller, //Who is currently selling the NFT redeem: trigger.data["redeem"]?true:false }; }" } ] } ] } }, { "if": "{ $method == "BUY" OR $method == "DIVEST" OR $method == "CLAIM" }", "init": "{ $NFT = exists(trigger.data["NFT"]) ? $saleInfo(trigger.data["NFT"]) : false; $artist = $method == "DIVEST" ? $artistInfo(trigger.data["artist"]) : $artistInfo($NFT.author); if ($method == "BUY"){ //Validate buy params if (NOT exists(trigger.data["NFT"])) bounce("NFT field is mandatory"); $isAuction = $NFT.bid ? true : false; //It can only NOT be an auction if it is first sold and thus $NFT.bid does not exist if ($isAuction) $hasBidders = ($NFT.soldBy != $NFT.by) ? true : false; //Booleans cannot be compared if ($isAuction AND NOT $NFT.by) bounce("There are no copies of that NFT listed for sale at the moment"); if (timestamp > $NFT.soldAt){ if ($isAuction){ if ($hasBidders) //You can still buy it if there were no bidders bounce("The auction is over"); } else{ bounce("The sale is already over"); } } } else if ($method == "DIVEST"){ //Validate divest params if (NOT trigger.data["artist"]) bounce("artist field is mandatory"); if (NOT is_valid_address(trigger.data["artist"])) bounce("artist's address is invalid"); if (NOT $artist) bounce("That artist never accepted maecenas"); if (NOT exists(trigger.data["amount"])) bounce("amount field is mandatory"); if (NOT is_integer(trigger.data["amount"]) OR trigger.data["amount"] <= 0) bounce("amount must be an integer > 0"); $investedAmount = var["maecenas_" || trigger.address || "_" || trigger.data["artist"]]; if (NOT $investedAmount) bounce("You have no shares of that artist"); if (trigger.data["amount"] > $investedAmount) bounce("You only have " || $investedAmount || " shares of that artist"); $yourShare = floor($artist.share * trigger.data["amount"] / $artist.supply, 0); if ($yourShare < 20000) bounce("It is not worth divesting your share"); } else if ($method == "CLAIM"){ //Validate claim params if (NOT trigger.data["NFT"]) bounce("NFT field is mandatory"); $isAuction = $NFT.bid ? true : false; if (NOT $isAuction) bounce("You cannot claim a non-auction sale"); $hasBidders = ($NFT.soldBy != $NFT.by) ? true : false; if (timestamp <= $NFT.soldAt) bounce("The auction is not over yet"); if ($NFT.claimed) bounce("That auction was already claimed"); } if ($artist AND (($isAuction AND $hasBidders) OR (NOT $isAuction))){ $allowsMaecenas = ($artist.sharePercent >= 0.01) ? true : false; $hasMaecenas = $allowsMaecenas ? $artist.supply > 0 ? true : false : false; if ($allowsMaecenas){ if ($method == "BUY") $maecenasShare = $artist.sharePercent * trigger.output[[asset="base"]].amount; else if ($method == "CLAIM" AND $hasBidders) $maecenasShare = $artist.sharePercent * $NFT.bid; else $maecenasShare = 0; $sharesInThePool = ($method != "DIVEST") ? $artist.supply : ($artist.supply - trigger.data["amount"]); //If divesting we need to substract divested shares if ($method == "DIVEST") $p = $artist.share - floor((trigger.data["amount"] / $artist.supply) * $artist.share, 0); //Current share minus what was just divested else $p = $artist.share + $maecenasShare; //Pool value after the sale $k = 1 / ($sharesInThePool + 1); //The fraction of the pool 1 share represents $price = $_maecenasCurve($sharesInThePool + 1); //Price of buying one share if ($method == "BUY"){ if ($NFT.soldBy == $NFT.author){ //We do not need to check for auction as we do not invest in those until the claim phase $totalSpendable = floor( $spendableFunds + $price * $INVESTMENT_CUT //What I save from investment cut as it is paid to myself + floor(trigger.output[[asset="base"]].amount * $HOUSE_CUT, 0) //What I got as cut from the triggering tx , 0); } else{ $totalSpendable = floor( $spendableFunds + $price * $INVESTMENT_CUT //What I save from investment cut as it is paid to myself - trigger.output[[asset="base"]].amount //Cannot spend the trigering tx as it will be locked , 0); } } else if ($method == "CLAIM"){ $totalSpendable = floor( $spendableFunds //Initial amount + $price * $INVESTMENT_CUT //What I save from investment cut + $NFT.bid * (1 - $HOUSE_CUT) //What I get from house cut , 0); } else{ $totalSpendable = floor($spendableFunds + $price * $INVESTMENT_CUT, 0); } $sharesToBuy = $sharesInThePool == 0 ? 0 : ceil($calculateSharesToBuy($price, $p, $k), 0);//Can be 0 and I would still afford 1 share if profitable if ($k == 1){ $sharesICanAfford = $price < $totalSpendable ? 1 : 0; } else { if ($totalSpendable > $price AND $sharesToBuy >= 1){ $sharesICanAfford = floor($totalSpendable / ($price * $sharesToBuy * (1 - $INVESTMENT_CUT)), 0); //Do not buy more shares than what I can afford } else{ $sharesICanAfford = 0; } } } if ($allowsMaecenas AND $sharesICanAfford > 0){ $buyShares = true; } else{ $buyShares = false; } $shareIWillfinallyBuy = min($sharesToBuy, $sharesICanAfford); //Maybe I can afford more shares than what is profitable to buy $myProfit = floor($buyShares ? $p - $p * $k^$shareIWillfinallyBuy : 0, 0); //0 if no shares are bought $poolFinalValue = $p - $myProfit; //Not actual profit but what I got out of the pool } else { $allowsMaecenas = false; $buyShares = false; $hasMaecenas = false; $maecenasShare = 0; $myProfit = 0; $poolFinalValue = 0; } }", "messages": { "cases": [ { "if": "{ trigger.data["method"] == "BUY" }", "messages": { "cases": [ { "if": "{ $isAuction }", "init": "{ if (trigger.output[[asset="base"]].amount < 20000) bounce("The minimum bid is 20000 bytes"); if (trigger.output[[asset="base"]].amount <= $NFT.bid * (1 + $MIN_BID_INCREMENT)) bounce("Your bid must be at least " || $NFT.bid * (1 + $MIN_BID_INCREMENT) || " (0.01% higher than the current)"); if ($NFT.soldBy == trigger.address) bounce("You cannot bid on your own auction"); }", "messages": [ { "app": "payment", "if": "{ $NFT.by != $NFT.soldBy //If we don't check for this the artists could steal bytes from the AA }", "payload": { "asset": "base", "outputs": [ { "address": "{$NFT.by}", "amount": "{$NFT.bid - 10000}" } ] } }, { "app": "state", "state": "{ var["locked"] += trigger.output[[asset="base"]].amount - ($hasBidders ? $NFT.bid : 0); //Increase non-withdrawable funds by the difference between previous and last bid $NFT.bid = trigger.output[[asset="base"]].amount; $NFT.at = timestamp; $NFT.bids = $NFT.bids + 1; $NFT.by = trigger.address; if (var["FREE_" || trigger.data["NFT"]])//We do not extend the deadline of freemarket NFTs var["FREE_" || trigger.data["NFT"]] ||= $stripToken($NFT); else var["NFT_" || trigger.data["NFT"]] ||= $stripToken($extendDeadLine($NFT)); }" } ] }, { "init": "{ if ($NFT.unitsSold == $NFT.cap AND $NFT.cap != 0) //We need to make an additional check for uncapped assets bounce("All NFT copies have been already sold"); if (trigger.output[[asset="base"]].amount < $NFT.price) bounce("Your payment is lower than the NFT price. You have to send " || $NFT.price || " bytes"); }", "messages": [ { "app": "payment", "if": "{ floor($NFT.price * (1 - $HOUSE_CUT - ($allowsMaecenas ? (($hasMaecenas OR $buyShares) ? $artist.sharePercent : 0) : 0)) - 10000, 0) > 0 }", "payload": { "asset": "base", "outputs": [ { "address": "{$NFT.soldBy}", "amount": "{floor($NFT.price * (1 - $HOUSE_CUT - ($allowsMaecenas ? (($hasMaecenas OR $buyShares) ? $artist.sharePercent : 0) : 0)) - 10000, 0)}" } ] } }, { "app": "payment", "payload": { "asset": "{trigger.data['NFT']}", "outputs": [ { "address": "{trigger.address}", "amount": 1 } ] } }, { "app": "state", "state": "{ if (var["FREE_" || trigger.data["NFT"]]) var["FREE_" || trigger.data["NFT"]] ||= {unitsSold: $NFT.unitsSold + 1}; else var["NFT_" || trigger.data["NFT"]] ||= {unitsSold: $NFT.unitsSold + 1}; if ($hasMaecenas){ var["locked"] += $maecenasShare - $myProfit; var["artist_" || $NFT.author] ||= {share: $poolFinalValue}; } if ($NFT.unitsSold + 1 == $NFT.cap){ if (var["FREE_" || trigger.data["NFT"]]) var["FREE_" || trigger.data["NFT"]] ||= {bid: 0, price: false, soldAt: timestamp}; //All units are sold, let's adjust soldAt so it can be already resold else var["NFT_" || trigger.data["NFT"]] ||= {bid: 0, price: false, soldAt: timestamp}; //Prepare for auction and delist it from normal sale } }" } ] } ] } }, { "if": "{ trigger.data["method"] == "CLAIM" }", "messages": { "cases": [ { "if": "{ $NFT.soldBy == $NFT.author }", "init": "{ if ($hasMaecenas OR $buyShares){ $paymentFromShares = $shareIWillfinallyBuy * round($price * (1 - $INVESTMENT_CUT), 0); $sellerPayout = floor($NFT.bid * (1 - $HOUSE_CUT - $artist.sharePercent) - 10000 + $paymentFromShares, 0); } else { $sellerPayout = floor($NFT.bid * (1 - $HOUSE_CUT) - 10000, 0); } }", "messages": [ { "app": "payment", "if": "{ $sellerPayout > 0 //enough to be worth paying AND $NFT.soldBy != $NFT.by //there is at least a bid }", "payload": { "asset": "base", "outputs": [ { "address": "{$NFT.soldBy}", "amount": "{$sellerPayout}" } ] } }, { "app": "payment", "payload": { "asset": "{trigger.data['NFT']}", "outputs": [ { "address": "{$NFT.by}", "amount": 1 } ] } }, { "app": "state", "state": "{ $decrement = $hasMaecenas //My share does not play a role here ? $NFT.bid - $maecenasShare //If it had maecenas the maecenas share remains locked : $NFT.bid; //If it does not have maecenas all bytes are unlocked if ($NFT.bid > 20000) //If it had no bids you don't need to reduce locked amount var["locked"] -= $decrement; //These bytes are no longer locked as the artist is getting them in this same unit if (var["FREE_" || trigger.data["NFT"]]) var["FREE_" || trigger.data["NFT"]] ||= {claimed: true}; else var["NFT_" || trigger.data["NFT"]] ||= {claimed: true}; //No longer listed for sale if ($hasMaecenas AND $NFT.bid > 20000) var["artist_" || $NFT.author] ||= {share: $artist.share + $maecenasShare}; //Increase the artist pool value }" } ] }, { "messages": [ { "app": "payment", "if": "{ $NFT.soldBy != $NFT.by //If we don't do this check the seller could steal bytes from the AA if there were no bids }", "init": "{ $share = $NFT.bid * (1 - $HOUSE_CUT); if ($NFT.royalty > 0 AND $NFT.soldBy != $NFT.by){ $royalty = $share * $NFT.royalty / 100; $outputs = [ {//Royalty address: $NFT.author, amount: floor($royalty, 0) //Percentage of the whole bid, no fees are charged }, {//Seller payment address: $NFT.soldBy, amount: floor($share - $royalty, 0) //We take the house cut then royalty cut } ]; } else{ $outputs = [ {//Seller payment address: $NFT.soldBy, amount: floor($share, 0) } ]; } $payload = {outputs: $outputs}; }", "payload": "{$payload}" }, { "app": "payment", "payload": { "asset": "{trigger.data['NFT']}", "outputs": [ { "address": "{$NFT.by}", "amount": 1 } ] } }, { "app": "state", "state": "{ var["locked"] -= $NFT.bid; if (var["FREE_" || trigger.data["NFT"]]) var["FREE_" || trigger.data["NFT"]] ||= {claimed: true}; else var["NFT_" || trigger.data["NFT"]] ||= {claimed: true}; //No longer listed for sale }" } ] } ] } }, { "if": "{ trigger.data["method"] == "DIVEST" }", "messages": [ { "app": "payment", "payload": { "asset": "base", "outputs": [ { "address": "{trigger.address}", "amount": "{$yourShare - 10000}" } ] } }, { "app": "state", "state": "{ var["artist_" || trigger.data["artist"]] ||= { share: $artist.share - $yourShare, //Decrease the share by the amount just divested supply: $artist.supply - trigger.data["amount"] //Decrease the supply by the shares used to divest }; var["maecenas_" || trigger.address || "_" || trigger.data["artist"]] -= trigger.data["amount"]; var["locked"] -= ($yourShare + $myProfit); }" } ] } ] } }, { "if": "{ $method == "REDEEM" }", "init": "{ if (NOT exists(trigger.data["signed_message"])) bounce("signed_message field is mandatory"); if (NOT exists(trigger.data["authors"])) bounce('authors field is mandatory'); if (NOT exists(trigger.data["meta"])) bounce("meta field is mandatory"); $spack = json_parse(trigger.data["signed_message"]) || json_parse(trigger.data["authors"]) || json_parse(trigger.data["meta"]); if (NOT is_valid_signed_package($spack, $spack.authors[0]["address"])) bounce("The signed message signature is invalid"); if (NOT $spack.signed_message["serial"]) bounce("The signed message does not contains a serial field"); if (NOT $spack.signed_message["NFT"]) bounce("The signer of this message does not include a NFT field"); $NFT = $saleInfo($spack.signed_message["NFT"]); if (NOT $NFT) bounce("That NFT does not exist"); //Prevent author from stealing their NFTs from other people if ($NFT.soldBy != $NFT.author) bounce("You cannot claim an NFT that is not being sold by their author"); if ($NFT.author != $spack.authors[0]["address"]) bounce("The signer of that message is not the author of that NFT"); //NFTs have to be created with redeemable: true to be redeemable if (NOT $NFT.redeem) bounce("That NFT is not redeemable"); //Check if sale is over and expire was set in the signed message if ($spack.signed_message["expireDate"]) if ($NFT.endTime < timestamp OR $spack.signed_message["expireDate"] < timestamp) bounce("That NFT is no longer claimable"); //Check if the NFT is address-locked if ($spack.signed_message["claimer"]) if ($spack.signed_message["claimer"] != trigger.address) bounce("You cannot claim that NFT from that address"); $signedAmount = $spack.signed_message["amount"] OTHERWISE 1; //Uncapped asset, we can issue whatever amount was signed if (NOT $NFT.cap){ $amount = $signedAmount; } //If it is going over the cap we need to reduce the claimed amount to match the asset cap else { if ($NFT.unitsSold + $signedAmount > $NFT.cap) $amount = $NFT.cap - $NFT.unitsSold; else $amount = $signedAmount; } //All copies were issued if ($amount == 0) bounce("All copies of that NFT have been already minted"); }", "messages": [ { "app": "payment", "payload": { "asset": "{$spack.signed_message["NFT"]}", "outputs": [ { "address": "{trigger.address}", "amount": "{$amount}" } ] } }, { "app": "state", "state": "{ if (var["FREE_" || $spack.signed_message["NFT"]]) var["FREE_" || $spack.signed_message["NFT"]] ||= {unitsSold: $NFT.unitsSold + $amount}; else var["NFT_" || $spack.signed_message["NFT"]] ||= {unitsSold: $NFT.unitsSold + $amount}; }" } ] }, { "if": "{ $method == "SELL" }", "init": "{ //Parameter validation if (NOT exists(trigger.data["endTime"])) bounce("endTime field is mandatory"); if (trigger.data["endTime"] < timestamp) bounce("You cannot set the end time in the past"); if (trigger.data["endTime"] > timestamp + 2628000) bounce("You cannot set the end time in more than 30 days"); if (NOT exists(trigger.data["initialPrice"])) bounce("initialPrice field is mandatory"); if (NOT is_valid_amount(trigger.data["initialPrice"])) bounce("initialPrice must be a valid amount"); if (trigger.data["initialPrice"] < 20000) bounce("The minimum initialPrice is 20000 bytes"); //NFT validation if (trigger.output[[asset!="base"]].asset == "ambigous") bounce("You cannot send more than one NFT type at a time"); $feedData = data_feed[[oracles=this_address, feed_name=trigger.output[[asset!="base"]].asset, ifnone="OK", ifseveral="last", type="string"]]; if ($feedData == "REVOKED") bounce("We revoked the trading of that token probably due to copyright reasons"); $NFT = $saleInfo(trigger.output[[asset!="base"]].asset) OTHERWISE {}; if (NOT $NFT) bounce("NFT not found"); if (trigger.output[[asset!="base"]].amount != 1) bounce("You cannot auction more than 1 copy of an NFT at a time"); if ($NFT.soldAt >= timestamp) bounce("A copy of that NFT is already being sold. The sale is expected to end at " || timestamp_to_string($NFT.soldAt) || " UTC but may be delayed depending on the number of bids"); if ($NFT.bid AND NOT $NFT.claimed) bounce("That NFT was auctioned but the payment has not been claimed yet. You can force the saller to claim it."); }", "messages": [ { "app": "state", "state": "{ $NFT.bid = trigger.data["initialPrice"]; $NFT.bids = 0; $NFT.by = trigger.address; $NFT.soldBy = trigger.address; $NFT.at = timestamp; $NFT.claimed = false; $NFT.soldAt = trigger.data["endTime"]; if (var["FREE_" || trigger.output[[asset!="base"]].asset]) var["FREE_" || trigger.output[[asset!="base"]].asset] = $stripToken($NFT) || {claimed: false}; else var["NFT_" || trigger.output[[asset!="base"]].asset] = $stripToken($NFT) || {claimed: false}; }" } ] }, { "if": "{ $method == "ENABLE_INVESTING" }", "init": "{ if (var["artist_" || trigger.address]) bounce("You are already accepting maecenas"); if (NOT trigger.data["share"]) bounce("share field is mandatory"); if (NOT is_integer(trigger.data["share"]) OR trigger.data["share"] < 1 OR trigger.data["share"] > 50) bounce("share must be an integer between 1 - 50"); if (exists(trigger.data["selfBuy"])){ if (NOT is_integer(trigger.data["selfBuy"])) bounce("selfBuy field must be an integer"); if (trigger.data["selfBuy"] < 0) bounce("selfBuy must be a positive integer"); $cost = (1161570 * trigger.data["selfBuy"] * (1 + trigger.data["selfBuy"]) * (1 + 2 * trigger.data["selfBuy"])) * $INVESTMENT_CUT; if (trigger.output[[asset="base"]].amount < $cost) bounce("You need to send at least " || $cost || " bytes"); } }", "messages": [ { "app": "state", "state": "{ var["artist_" || trigger.address] = { supply: trigger.data["selfBuy"] OTHERWISE 0, share: 0, sharePercent: trigger.data["share"] / 100 }; if (trigger.data["selfBuy"]) var["maecenas_" || trigger.address || "_" || trigger.address] = trigger.data["selfBuy"]; }" } ] }, { "if": "{ $method == "DISABLE_INVESTING" }", "init": "{ $info = $artistInfo(trigger.address); if (NOT $info) bounce("You are already not accepting maecenas"); if ($info.supply > 0) bounce("You cannot stop accepting maecenas right now as you already have some"); }", "messages": [ { "app": "state", "state": "{ var["artist_" || trigger.address] = false; }" } ] }, { "if": "{ $method == "INVEST" }", "init": "{ if (NOT trigger.data["artist"]) bounce("artist field is mandatory"); $artist = $artistInfo(trigger.data["artist"]); if (NOT $artist) bounce("That artist is not accepting maecenas"); if (NOT trigger.data["amount"]) bounce("amount field is mandatory"); if (NOT is_integer(trigger.data["amount"]) OR trigger.data["amount"] <= 0) bounce("amount must be a positive integer"); $x0 = $artist.supply; $x1 = $artist.supply + trigger.data["amount"]; $upToFirstToken = 1161570 * $x0 * (1 + $x0) * (1 + 2 * $x0); $upToTargetPurchase = 1161570 * $x1 * (1 + $x1) * (1 + 2 * $x1); $totalCost = round($upToTargetPurchase - $upToFirstToken, 0); if (trigger.output[[asset="base"]].amount < $totalCost) bounce("Your payment is not enough for that purchase"); }", "messages": [ { "app": "payment", "payload": { "asset": "base", "outputs": [ { "address": "{trigger.data["artist"]}", "amount": "{floor($totalCost * (1 - $INVESTMENT_CUT) - 10000, 0)}" } ] } }, { "app": "state", "state": "{ var["artist_" || trigger.data["artist"]] ||= {supply: $artist.supply + trigger.data["amount"]}; if (var["maecenas_" || trigger.address || "_" || trigger.data["artist"]]) var["maecenas_" || trigger.address || "_" || trigger.data["artist"]] += trigger.data["amount"]; else var["maecenas_" || trigger.address || "_" || trigger.data["artist"]] = trigger.data["amount"]; }" } ] }, { "if": "{ $method == "PROFILE" }", "init": "{ $prof = $profile(trigger.address); $oldUsername = $prof.username; $newUsername = trigger.data["username"] OTHERWISE $oldUsername; if (NOT $oldUsername){ if (NOT trigger.data["username"]) bounce("username field is mandatory"); } if (var["user_" || $newUsername]){ if ($oldUsername){ if ($oldUsername != $newUsername){ bounce("username already taken by a verified user"); } } } if ($prof) $profileObj = $prof || trigger.data || {username: $newUsername, verified: false}; else $profileObj = trigger.data || {verified: false, username: $newUsername}; delete($profileObj, "method"); }", "messages": [ { "app": "state", "state": "{ var["profile_" || trigger.address] = $profileObj; if ($oldUsername){ if ($oldUsername != $newUsername) var["user_" || $oldUsername] = false; //Free old username } //Do not lock new username here. It will be locked upon verification to prevent username squatting }" } ] }, { "if": "{ $method == "CHANGE_PRICE" }", "init": "{ if (NOT trigger.data["NFT"]) bounce("NFT field is mandatory"); $NFT = var["NFT_" || trigger.data["NFT"]]; if (NOT $NFT) bounce("NFT not found"); if (NOT trigger.data["price"]) bounce("price field is mandatory"); if (NOT is_integer(trigger.data["price"])) bounce("price must be an integer"); if (NOT is_valid_amount(trigger.data["price"])) bounce("price is invalid"); if (trigger.data["price"] < 20000) bounce("The minimum price is 20000 bytes"); if ($NFT.bid) bounce("You cannot change an auction price!"); }", "messages": [ { "app": "state", "state": "{ var["NFT_" || trigger.data["NFT"]] ||= {price: trigger.data["price"]}; }" } ] } ] } } ]