Dynamic NFT Evolution Contract

[Mkalbani]

Location: contracts/dynamic_nft
Labels: smart-contract, soroban, good first issue
Estimated Time: 8 hours
Difficulty: Hard

Description

Create NFTs that evolve and change properties based on player achievements, time, and milestones.

Tasks

• Design dynamic metadata structure
• Implement NFT property evolution logic
• Add milestone-triggered upgrades
• Create time-based evolution
• Implement rarity evolution system
• Add visual trait changes
• Create evolution history tracking
• Write evolution tests
• Add evolution reversal (downgrade)
• Implement fusion evolution (combine NFTs)

Acceptance Criteria

• NFT properties change based on conditions
• Milestones trigger upgrades
• Time-based evolution works
• Evolution history preserved
• Fusion creates new NFT
• Contract deployed to testnet

[drips-wave]

This issue has been added to the Stellar Wave Program and is worth 200 Points.

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[Nanle-code]

@Nanle-code has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Can i work on this issue?

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[dannyy2000]

@dannyy2000 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I would like to work on this issue , ETA 4-5 hours

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[abbakargarba]

@abbakargarba has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Application for: #77 — Dynamic NFT Evolution Contract

Hi! TEAM
Dynamic NFTs that actually evolve are way more fun than static jpegs. Abbakargarba - Babax here—I've built evolution mechanics before and know where the complexity hides.

I'll deliver:

• Dynamic metadata structure that updates as NFTs evolve
• Three evolution triggers: milestones, time-based, and fusion (combine two to create one)
• Rarity system that can shift up OR down (downgrades included)
• Evolution history tracking so each NFT tells its story
• Visual trait changes mapped to evolution states
• Testnet deployment with tests covering every evolution path

Why me: I've built similar systems—the tricky part is preventing evolution loops and making sure fusion doesn't burn more than intended. I'll handle all those edge cases.

Ready to make NFTs that grow!

Cheers,
Abbakargarba - Babax

ℹ️ Repo Maintainers: To accept this application, review their application or assign @abbakargarba to this issue.

[walterthesmart]

@walterthesmart has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi @Mkalbani, I would like to work on this issue.

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[rosemary21]

@rosemary21 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’m very interested in implementing dynamic NFTs because they represent a cutting-edge intersection of blockchain, gaming, and digital collectibles. Creating NFTs that evolve based on player achievements, milestones, or time adds interactivity, personalization, and long-term engagement. This is exciting because it goes beyond static token standards and requires designing smart contracts that are flexible, efficient, and secure while tracking historical states and supporting complex evolution logic.

I’m particularly motivated by this issue because it combines several advanced concepts: dynamic metadata, milestone-driven upgrades, time-based evolution, rarity adjustments, and NFT fusion mechanics. Designing a system where NFTs can evolve, downgrade, or merge without breaking uniqueness or ownership guarantees requires careful thought about on-chain storage, event tracking, and gas optimization. Implementing evolution history ensures transparency and auditability, which is critical for trust in decentralized systems.

Relevant Experience

Smart Contract Development & NFT Standards

Built ERC-721 and ERC-1155 style NFTs with custom metadata and on-chain storage.

Worked with token metadata evolution patterns, including trait updates and rarity adjustments.

Deployed contracts to testnets and mainnets with proper versioning and upgrade paths.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @rosemary21 to this issue.

[anonfedora]

@anonfedora has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I'm Anonfedora, I have vast experience in contributing and building on the Stellar ecosystem with the Rust using soroban's SDK.
I'm also good at comprehensively testing features.

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[drips-wave]

Congratulations, @abbakargarba! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @abbakargarba: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are issued when this issue is marked as completed by the maintainer.

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[abbakargarba]

thank you for this @Mkalbani 🩵🌊, i will fork it and start working ASAP

[abbakargarba]

hello @Mkalbani PR submitted and ready to merge⚡🩵

[drips-wave]

This issue has been marked as completed by a Drips Wave moderator for @abbakargarba as part of the Stellar Wave Program's 2nd Wave 🥳

Moderator's reason: All required work was completed and merged, but the issue was not linked properly. Work was completed in this PR:
#105

😎 @abbakargarba: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here.

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ℹ️ Note: This issue was marked complete via moderation. Points were issued even though the GitHub issue remains open.