This guide is one of the most important ones because it dives deep into the first NFT economic model available on the Metale platform: Bonding Curve. It covers two main paths: Creator and Merchant. In this way, every Metale stakeholder can understand how to simply manage their content NFT collection on the platform and share the revenue from their transactions.

Bonding Curve: The Basics

Bonding Curve represents a unique mathematical model where the supply of an NFT is directly tied to its price through a one-to-one functional relationship. This model is implemented through the Bonding Curve smart contract, which facilitates the issuance of NFTs through predefined buy (mint) and sell functions.

In this system, the buyer needs to transfer a specified amount of Metale's utility token $RCM to the contract's purchase function to obtain the NFT. The function then calculates the appropriate number of NFTs based on the current average price of the $RCM token and distributes it to the buyer. In addition, the model allows $RCM tokens to be redeemed at any time by returning the NFT to the contract. This flexibility ensures a dynamically responsive relationship between the supply of NFTs and their market value, following the principle of a guaranteed curve.

In the guarantee curve model, the demand for $RCM tokens increases as more NFTs are subsequently minted in the same collection. This mechanism ensures liquidity and price growth of NFTs. However, if the goal is not only to release a single collection, but to create an unlimited number of content works, the shortage of $RCM tokens may become a problem. To solve this problem, different collections can have different initial prices for the buy and sell functions, taking into account the price of $RCM tokens.

Assume that the function for buying and selling $RCM tokens required for minting copyright governance NFTs is f(x). In this case, you can simply introduce a price p for $RCM tokens that is valid when the work is released, so that the function for buying and selling $RCM tokens required becomes g(x) = f(x) / p.

In this case, different works will have different initial prices. If the Metale platform is widely accepted and the price of $RCM tokens continues to rise, this method can ensure the NFT market price of new content works. It can also encourage users to redeem $RCM tokens invested in old works in advance according to the rise in the price of $RCM tokens, thereby turning to support new works and maintaining the attractiveness of the platform. If the platform is unpopular and the price of $RCM tokens falls, this method can attract new works by providing a larger number of $RCM tokens, thereby ensuring the attractiveness of the platform for new works.


📜Read more about Bonding Curve in the Metale Protocol whitepaper.


Bonding Curve:

Now, let’s simplify things for creators of all kinds of content on the Metale platform. Here’s a step-by-step guide from publishing your content NFT collection to sharing revenue for the first time through trading (interacting with the smart contract for your NFT collection). Note the hyperlinks to jump to other basic tutorials.

1. Wallet connected to the Metale platform:

2. Check the dashboard in the upper right corner (if the account is new, there will be no tags/points):

3. Make sure you have a small amount of $BNB to pay for gas fees for on-chain transactions. Paying gas fees is a mandatory step when creators publish content on-chain or perform other interactions on the blockchain. However, since the Metale platform supports opBNB since June 22, the gas fee for each transaction is extremely low, reaching 0.000002 $BNB (0.001 USD). There are multiple ways to get $BNB on the opBNB chain:

A. Simply use the BNB/opBNB cross-chain bridge directly on the Metale platform.

B. Use the opBNB chain to send $BNB from external platforms such as Binance.

C. Use the official opBNB bridge.

4. Now you can operate and publish your content NFT collection by clicking CREATE:

5. After reading Metale Tutorial #3: Creating an Overview and Submitting Your Work and uploading your content, select the total NFT supply for your collection and submit your application:

Important: If a creator destroys unsold NFTs, the total supply of NFTs may decrease, but not increase. Creators can increase the copyright ownership percentage of each NFT through this mechanism, but cannot decrease it. The community and users can also achieve this by buying back and destroying NFTs.

6. After signing the on-chain transaction, your content NFT collection will be issued on the Metale platform. However, you will need to activate your collection by minting your first free NFT. This will enable other merchants to see your NFT collection in global search, and mint/sell NFTs. Without the creator's first free mint, the collection will be read-only and locked. Click "Mint":


7. Click "Buy 1 Video Box":

Important note: The first NFT minted by a creator is free, but the creator still needs to confirm the on-chain transaction, which requires paying a small gas fee of $BNB.

8. Now that you have 1 NFT minted in your collection, it is unlocked and other merchants and your fans can freely mint and sell the NFTs in your collection:

In the screenshot you can see that the next person minting price is 0.07 $RCM. Please read the Bonding Curve: Merchant section below to understand the transaction mechanics.

9. View your NFT collection on your profile to manage it and learn about the features of the NFT collection page:

Bonding Curve: Merchant

Now, let's make it easier for merchants who want to invest in copyright by acquiring NFTs of content collections, or simply own their favorite content as NFTs to gain revenue sharing. The following is a step-by-step guide to trading NFTs of content collections in a guaranteed curve economic model, including detailed examples. Please note the hyperlinks, these will point to other basic tutorials.

1. Connect your Metale wallet (no rewards/points if it is a new account):

2. Check the right side instrument panel:

3. Make sure you have a small amount of $BNB to pay the gas fees for on-chain transactions. When merchants trade NFTs on-chain or perform other interactions on the blockchain, paying gas fees is a mandatory step. However, since the Metale platform supports opBNB since June 22, the gas fee for each transaction is extremely low, reaching 0.000002 $BNB (0.001 USD). There are multiple ways to get $BNB on the opBNB chain:

A. Simply use the BNB/opBNB cross-chain bridge directly on the Metale platform.

B. Use the opBNB chain to send $BNB from external platforms such as Binance.

C. Use the official opBNB bridge.

4. To trade NFTs in the Bonding Curve economic model, you need $RCM. Here’s how to get it:

A: If you already have $RCM on the BNB chain: Just use the Metale platform’s direct BNB/opBNB cross-chain bridge.

B. If you give up $RCM: Use the following official contract to obtain $RCM on other DEX/external wallet pages:

$RCM on BNB chain: 0x7102f5bb8cb3c6e7d085626e7a1347aafdf001f6

🌟 $RCM on opBNB chain (currently mainly on Metale platform): 0xaFC1C35ae28d6A20E837a7bBbFF2807095281fcf

The easiest way to get $RCM is to connect your Metale wallet to Pancake Swap and paste the $RCM contract address there. After buying $RCM on Pancake Swap, it will show up in your Metale, ready to be used:

5. Everything is ready. Let's use the same collection of NFTs for the "Dark Dragon" skit as in the Bonding Curve: Creator section above. Assume that you are the first user who wants to buy this skit NFT after the creator mints it for free. The second NFT mint price is 0.07 $RCM, so we mint the second NFT first:

IMPORTANT: Everyone can freely trade all available content NFT collections in the Bonding Curve standard on the TRADE page (Metale Tutorial #5: Trading Overview) and search all available works on the EXPLORE page (Metale Tutorial #6: Exploration Overview).

6. After you purchase the second NFT, you can see:

A. 2/5000 NFTs have now been minted, which includes 1 free NFT minted by the creator to activate this collection, and the 1 NFT you just minted.

B. The third NFT minting price is already 0.28 $RCM.

C. You own 1 NFT (video box) which you can sell for 0.06 $RCM. Please note that you will receive a 10% reduction in revenue for each NFT you purchase. See the end of this article for fee and revenue details.

D. The "Total Locked Value" and "Total Value" in the Information section have been updated. For more details on these metrics, read Metale Tutorial #4: Favorite Pages.

7. We repeat this step again to buy the third NFT for 0.28 $RCM:

8. Now, you own 2 NFTs, and the price of the 4th NFT is 0.62 $RCM:

9. Let's buy 10 more NFTs to check the next batch price. If you wish to purchase the next 10 NFTs, the incremental prices from the 4th to the 13th NFT will be added to the total price and presented to you. We purchase these 10 NFTs for 44.34 $RCM:

10. We now have 12 NFTs, let's buy the last 10 to check the price of this batch. The price of minting 10 NFTs from the 14th to the 23rd NFT together is already 216.22 $RCM:

11. After completing all the above purchases, the NFT collection page will display the following information from your perspective:

23 minted NFTs: 1 given for free by the creator, and 22 minted by you.

The price of minting the 24th NFT is 36.37 $RCM.

If you sell 23 NFTs now, their value is 237.19 $RCM.

12. Now let's sell all 22 NFTs purchased above. The 23rd to 2nd NFT batch sold for 237.19 $RCM, and the price trend of each NFT is decreasing:

13. Once we have sold all NFTs at $RCM value, the Content NFT page will now display the following information:

1 minted NFT: Only the creator's free NFT still exists and cannot be sold physically for 0 $RCM, but the creator can always sell it if more than one NFT is minted in the collection. The price to mint a second NFT is again 0.07 $RCM. We own 0 NFTs (the video box). The total locked value is 0 $RCM because the liquidity pool for this NFT collection is empty (only 1 free NFT left), and the total value after all trading activity is 498.09 $RCM.

14. In the Activity section, you can clearly track the history of purchases and final sales, as well as the creator's first free NFT MINT. Since all content NFT collections are stored on the blockchain, they will be kept there forever. You can explore and view the test NFT collection yourself for educational purposes, which has been used here. However, please do not use it for speculation ([Disclaimer]: NFA, DYOR).

Bonding Curve: Revenue Sharing

After all the buying and selling in the Bonding Curve: Merchant section above, the creator has earned 14.23 $RCM for posting this collection for free (which is equivalent to 30% of the 10% transaction fee on the total transaction value of 498.09 $RCM).

As of June 22, the following revenue mechanisms exist across the ecosystem:

1. Main income: income from paid content consumption (monetization, coming soon).

2. Secondary income: NFT is traded on the Metale platform, with a transaction fee of 10%;

  • 30% goes to the copyright owner (creator).

  • 30% commission belongs to the Metale platform.

  • 40% of the funds are returned to NFT holders (based on the distribution between each NFT holder).

Therefore, these two revenue streams can and should operate in parallel, allowing creators to freely publish, distribute, and monetize their works on the blockchain, while enabling merchants to invest in copyright and share in revenue through NFT ownership.

Additional Information

In this tutorial, we bought and sold NFTs from a single account, without taking into account real market conditions. In cases of high demand, other users may be able to mint NFTs faster than you can trade them. For example, if you start minting a second NFT at 0.07 $RCM and there are 100 users minting at the same time, you may experience errors or delays. After refreshing the page, you may find that 50 NFTs have already been minted in the collection, and the price of the 51st NFT has increased significantly.

The guaranteed curve economic model rewards early adopters, providing economic benefits to merchants who gain early access to content collection NFTs. However, during the initial minting phase of unlocking the collection, creators have the option to mint not only 1 free NFT, but the first 100 or any other number of NFTs. This allows creators to invest $RCM and lock it into their NFT collection, setting a high initial reserve price for their NFT to establish initial market value.

Additionally, creators retain the flexibility to sell their NFTs in any quantity and at any time, further influencing the market dynamics of their collections.

Therefore, we encourage everyone, whether creators or merchants, to fully understand and appreciate the principles of a decentralized content ecosystem. The platform, the official team, or anyone else is not responsible for any content NFT collection or NFT market activities. Everything depends entirely on the consensus mechanism and the value of the content. The Metale platform serves only as a technical tool for on-chain transactions, providing all participants with complete freedom of action.

【Disclaimer】This article does not constitute financial advice, please always do your own research (DYOR).


About the Metale Protocol

A new standard global content distribution protocol that provides on-chain services for content subscription, public profit sharing, and asset trading.